If you need a porting job on the head of a 1957 Gullwing Mercedes or a cylinder sleeve in a 426 Hemi block, Ofria and his crew can do the job. Duncan Racing International has professional ported more 2-stroke ATV cylinders to race wins and championships than any company in the world. Cylinder heads, as manufactured, are usually suboptimal for racing applications due to being designed for maximum durability.Ports can be modified for maximum power, minimum fuel consumption, or a combination of the two, and the power delivery . Stage I BP: $300 Our "street" port job - a minimum recommended porting stage. Chamber softening is a great practice on any power adder application. A: In order to answer your question, we need more information: Engine, Cam Card, Compression, intake fuel delivery type. Contact Us Duncan Racing International, Inc. 9380 Bond Avenue Suite . now available for purchase or add it to your port package! Holeshot Performance Products, Inc. is a trademark of Holeshot Performance. packages including stainless steel valves, dual springs w/dampers, retainers, locators, keepers. The porter clamps your cylinder head to his porting bench, and proceeds to sand, shave, grind and polish in all the right places, to remove the inconsistencies of mass production, as well as known . Tech. Yoes Racing Heads provides cylinder head porting services for many different types of engines:Datsun,Nissan,Chevy,Ford,Harley Davidson and many others. All the gains of the port job are lost at the intake manifold or exhaust headers if we don't make the right choice. A head with higher angled ports may give the engine a straighter port angle: lessening drag; increasing the possibility of intake charge ramming; at the expense of hood clearance. for big block Chevys. Carburetors must match intake manifolds. PERFORMANCE CNC - The Ones You Can Trust! The companies do not know what type of heads you will be running with your intake so they make the mouth of the port smaller for you to match to your heads. A: No, far from it. 2012 marks the 23nd year that Lee has been professionally porting Harley cylinder heads. affordable prices Intake manifold selection is the next phase. Mon 8am to 4pm. This could not be farther from the truth adding ported cylinder heads to your boosted application largely increases the effiiciencey of your combination allowing for lower boost numbers for the same net power, this largely lowers the strain on your innercooler system. . Race Tech's head porting provides an increase in both flow and velocity to gain peak horsepower as well as powerband. Offering top notch Aluminum Cylinder Head Porting and Cylinder Block Machining Services for High Performance Racing Engines by Race Engine Builder Steve Schmidt. A: depending on cylinder head and package, sporter and street port typically take 3-5 days while more advanced ports require more time. However, the amount of power gain depends on your engine. Our first notable customer was Carroll Shelby Affordable Port WorkAffordable factory head porting is available from PowerHeads in Southern California. The objective of Automotive Engine/Cylinder Head Machining is to qualify the student as an automotive cylinder head machinist. Port shape is the key to power and when that power becomes available. As hot gasses roar out, cool air and fuel are drawn in. Yoes Racing Heads. (818) 993-7000 -- All Rights Reserved -- Designed by VHS, FOR OVER 50 YEARS, WE'VE BUILT NOTHING BUT HORSEPOWER. Examine each port carefully and watch for the irregularities mentioned elsewhere in this article. Here at West Coast Cylinder Heads we have spent years in research & development finding the best performance. This relieves the quench pads and reduces detonation making for an easier tune up! Yoes Racing Heads was started in 1986 by Mike Yoes. Again, how do you intend to use the engine? If so, what kind of racing? The SBC Super Victor 30 CFM's off from best runner flow to worst. Please email, call, or text us for a quote. Gary has spent countless hours on the flow bench with 2, 4 & 5 valve heads and knows what works to make a good spread of power across the board. Cylinder-head porting begins with the proper cylinder head, intake manifold, and carburetor. A head with more extreme pushrod angles may lead to a better port design at the expense of quicker wearing components. With custom fitted equipment we test our ports swirl, velocity, discharge coefficient and wet flow characteristics. Porting TerminologyShort-side turn: The short-turn wall from the port floor to the valve seat. OPENING HOURS: CONTACT US: Inside wall: The port wall which leads to the center or inside. Intake Manifolds: Tier 1, Tier 2, Race, Max effort. You can tell these guys have a passion for motor sports and it shows in their work. CA 92021. With the wide use of MLS head gaskets and the high power people are now creating with late model vehicles the cylinder head surface finish is more important then ever. Dart is one of the biggest head companies around, they have great quality control and flow great numbers. (818) 993-7000 Site Navigation Home 4-Valve Heads Dry Sump Pumps Cylinder Heads Engines Shop Tour Our Race Team Parts Suppliers Items For Sale Image Gallery Links Contact Us Welcome to Valley Head Service's Website Jim Hall, Warren Johnson, George Fulmer, and Fast Jack Beckman. We actually want those hot gasses to help with intake flow when we have valve overlap. Your engine will run and it will make power, however, it won't make as much power as it would with matched ports. have performance, precision and machining There's a lot of debate about what to do with combustion-chamber surfaces. Carburetor sizing is critical to performance with or without porting. Improvements to airflow quality and quantity come from porting in the bowl area between the valve seat and valve guide because it is an area of restriction. It is recorded for future reference on a computer program. Performance Products is not responsible for any engine damage that may occur from improper installation of its products. genes in our "blood". Older engines can have some pretty major casting shift, as well as casting flaws, so usually greater improvements can be made, however older designs may not be as good as what is available today. We keep your Name and Design Confidential. SCCH is Proud to announce our Release of our VW MK II/ Corrado spherical bearing kits for the factory A arms, In addition SCCH is releasing the MKII /Corrado Bump steer elimination kits and Spherical Ball joint replacement kit with newly re-designed Generation II drop pins. One thing you do not want is some guy getting a hold of your cylinder head, over porting it or doing shoddy valve seat work. Absolutely the best in the business for making big power and the best quality, we ship our heads to them all the way from Florida, if you want the best heads for a coyote, LS/LT etc, Shawn is the man! Airflow varies depending on the distance between the valve and its seat. If you want your cylinder heads ported and returned to you, please advise PowerHeads and document your request. A: Short answer is yes, any time the engines efficiency and total air volume is increased more power is produced. Trust: Performance CNC ensures trust through our comprehensive NDA (Non-Disclosure Agreement), AND a reputation for honoring trade secrets. Intake ports manage flow differently than exhaust ports. of the culture, and we like to think that we are doing our part to keep that culture ALIVE AND THRIVING! A head with a poor head bolt spread may have a better port design, but may be prone to head gasket failure. and our There are a lot of people out there that believe that if their heads are CNC ported every runner is going to flow the EXACT CFM's. have performance, precision and machining Each trip to the porting booth should include repeat journeys to the flow bench to chart progress, enabling you to see what porting has done for each head. FREE INSPECTIONS! genes in our "blood". We are passionate about making a quality product that will make maximum horse power. purchasing is legal for closed-course competition only. *anytime exhaust port timing is changed it effects the engines compression. At Abbotts SuperFlow Port & Polish we take a lot of pride in porting and polishing intakes and cylinder heads. This is not the case. We start with the CNC Core direct from Brodix. ( before is important to understand how their flow bench compares to others. However, making it actually happen requires a bit of work. operated by 3rd & 4th Generation Machinists with Think of the flow of air and fuel as water. The SBC Victor 20 CFM's off from best runner flow to worst. However, we offer crack repairs, short and long block builds, and much more. however, I would say most "off the shelf" performance heads see around 25-30% horsepower gain from our average service while stock heads see in the 50% range.". Cylinder heads: Sporter, Street, Mod, Race, Max effort. Too small of a port limits the total amount of air that can be flowed but typically has high air speed. Most jobs will require the customer to send a head core. Porting is a process that maximizes the current combination of the engine and its needs. If you're running a lot of lift and the valve head clears, valve shrouding becomes less of an issue. Awesome work for a great price. 800.957.7223 Racing Engines Welcome to Abbotts SuperFlow Port & Polish for all of your racing needs!!!!!!!!!! Tel: 925-586-8341. On Intake Manifolds, as cast, no port work, Showing how on an Intake Mainfold Runner Can be unbalanced. The SBF RPM 28 CFM's off from best runner flow to worst. I just wanted to show you that the CNC porting is not 100% perfect. We have 15+ years experience in designing induction systems ranging from NHRA super stock cars to record-setting street cars. Below is a quick-reference formula to follow for carburetor selection. When perfectly matched, airflow becomes smooth and plentiful. Cylinder heads: Sporter, Street, Mod, Race, Max effort. Too large of a port kills the air speed and makes the port "lame" killing the inertia, harming the atomization of the fuel. I had Shawn go through and revive some old LS 241 castings for me and they turned out great. You could say we Intake manifolds must match cylinder heads. Pro Tech 4531 E San Gabriel Fresno, CA 93726. Half the time you see somebody that does CNC Port Work only offers it on certain heads, so the rest of the heads they receive they are doing hand porting. To get the edge on the competition, you can't buy a "CNC'd Head" out of a Catalog! From light de-shrouding, to major port changes, Steve's offers many stages of cylinder head porting in an attempt to maximize cylinder head CFM while maintaining air speed. The theory of operation and the cylinder head role in the engine operation will be thoroughly covered. racers in the old family barn. There is an article in Super Chevy High Performance Magazine, June 2008 issue, that shows that Dart CNC ported Pro 1's at .500 lift from right to left port, they were flowing 21 CFM's off from one runner to the next. over 55 years of experience. Rises and bumps in the port walls, roofs, and floors cause irregularities (turbulence) in airflow. Specialized in Cylinder Head Development and Induction Engineering. Air is going to behave differently as the valve face moves farther away from the seat. By accepting our use of cookies, your data will be aggregated with all other user data. We Port & Polish Ford 4.6's, 5.0's, and 289/302/351W/351C/429/460's. You can flow all the air in the world on a flow bench, but if valves aren't sized, ground, and faced properly, all that effort will be lost to valve interference. DR has done extensive testing over the last 40 years to continually offer industry leading port modifications for most sport ATV models and MX Motorcycles. More time is required for more complex projects that need to have custom valves or camshafts made. It is recorded for future reference on a computer program. This holds true whether you are porting a small- or big-block cylinder head. displacement, and RPM the heads will be used with. Powered by Visualmodo. To sum it up: bigger isn't always better. Stage 1 is a match port to your heads only. We are still based in the San Fernando Valley where cars and motorcycles are still big part You ship your heads/intake to us and we ship them back to you for free!! Too much carburetor can be as bad as not enough. *Available by Appointment After Hours- Call to Schedule! They can also cause detonation by way of hot spots that glow under hard acceleration. in the 1960s. Just a little food for thought!! road or highway anywhere in the world. Dale & Gary have over 45 years total combined experience building high performance engines, porting cylinder heads, and Dale's racing experience speaks for itself. listed below are package names in the order of lowest to highest performance gain. For under $1,000, PowerHeads takes your cylinder-head castings and after CNC-port work along with hand-massaging finish work, vastly improves performance. Don't Forget About This rapid flow of hot gasses helps on the intake side during valve overlap. Some people believe that more is better, but in reality, engines require a certain amount of air in a given cycle. NOTE: Duncan Racing International is the proud owner of the Paul Turner Racing product line. There are a lot of shops that offering porting, or CNC porting, or cylinder head machining. Chamber mods go well beyond valve shrouding. West Coast Racing has 5.3l and 6.0l CNC port programs for GM cast cylinder head that you have to have! Performance CNC specializes in Precise Reverse Engineering of Racing Cylinder Head Ports and Chambers and the precise machining of Master Model Details using 5-Axis CNC Equipment.. Join the Private Label Porting Program: We keep your Name and Design Confidential. Had some 243 heads ported and the CNC finish and deck finish was better than the last few sets of AFR heads Ive bought. PERFORMANCE CNC - The Ones You Can Trust! Unlike large production-oriented cylinder head companies we aim to be there for you and make your experience as easy and smooth as possible. Nov 13, 2020 Cylinder head porting is a fairly simple premise - increase airflow into the combustion chamber to make more power. Custom Machining - Porting & Polishing, Valve Guides, Machine surfaces. The process includes, Cylinder Length Modification (if necessary to properly set deck height for correct squish clearance), Hand ported by DR Master Technician with over 5000 cylinders ported. A five-angle valve job will deliver better airflow than a three-angle because the path becomes smoother across the seat and valve. We offer custom port development for any application we do not currently have! Air flow characteristics and their effect on performance and longevity will be highlighted in all courses of this . 15625972850 Branch_okeefe@verizon.net. Shrouding is affected by chamber shape as well as how far the valve opens. 94534 . When we port a set of heads, we gauge each runner in certain KEY Locations for MAX FLOW. This service is priced upon request depending on what type of cylinder head you have. CNC Porting. It also begins with proper header selection because what you bolt to a cylinder head. Hot spots can cause fuel to ignite prematurely, adversely affecting performance and engine life. Canada: Because engines are power-making air pumps, airflow volume and velocity through the ports and chambers is significant to making power. ( Yes, camshaft specs are the biggest determining factor to porting), does my compression ratio matter ( Yes, compression ratio in combination of piston speed determines velocity curve), Will I receive a before and after flow sheet? You can provide the head cores or PowerHeads can provide them. Water ripples and aerates as it cruises over surfaces. Valley Head Service 19340 Londelius St., Northridge, CA 91324 USA Tel. head. DR also carries a full selection of top end parts including; pistons, gaskets, bearings etc. Trust: Performance CNC ensures trust through our comprehensive NDA (Non-Disclosure Agreement), AND a reputation for honoring trade secrets. In that time he has ported more than 900 sets of heads. A curved port may increase mid range power via air swirl, at the expense of top end power. CNC Programmers claim that a hand ported head can not match a CNC ported head. Porting BoothCylinder-head porting isn't just about increasing volume; it's about improving flow quality at the same time. It also begins with proper header selection because what you bolt to a cylinder head becomes the strongest or weakest link in the power equation. Cart. Sometimes, we get better airflow with less valve lift. Insuring the max efficiency and capability out of our cylinder heads, "It's hard to give an exact percentage of gain because of the number of variables in all the different applications we do. Blindly installing an intake manifold without checking port compatibility is just plain foolish. No Questions Asked. We can also use our engine simulation software to design a. Wild, Weird ScienceThe science of port work is little more than common sense. Manifold and cylinder-head port sizes are rarely spot on, even when made by the same manufacturer. Carburetor sizing and intake-manifold port matching are crucial to the success or failure of a port job. If you're building for the daily commute, go more for low-end torque than high-end power. Hand porting using a variety of tools by a head porting specialist with 30 years of experience, Flowtests are done using a Superflow SF-600, A collection of headswe've preparedwith passion. NEW heads and Intakes in Stock Performance CNC ensures trust through our comprehensive NDA (Non-Disclosure Agreement), AND a reputation for honoring trade secrets. operated by 3rd & 4th Generation Machinists with After the seat integrity inspection is completed, the valves, seats and ports are professionally machined, un-shrouded and blended to provide maximum flow in an O.E. Holeshot Tue 8am to 4pm. CNC Combustion Chamber. Lee's Speed Shop PORTING. Holeshot Performance Cylinder Head Porting Service Pricing, All orders plus shipping - Prices subject to change without notice, Copyright 1998-2022 - All Rights Reserved. Sorry, there are no products in this collection. We offer our own line of Hoopers Heads cnc billet cam caps! Proper carburetor sizing is only the beginning of proper porting. That means the engine must do both effectively. ** Our Stage 2 & 3 port work will balance out your flow #'s on your intakes. ronny.68@live.com Zipper's CNC Ported Milwaukee-Eight Harley Cylinder Heads M8 Stage 2 - Our Stage 2 head upgrade begins with an inspection of the seats, guides and valves. In addition to our cylinder head and manifold porting and design, we also offer 5-axis CNC machining and digitizing services. Although it demonstrates what works and what doesn't, a flow bench doesn't tell all. A small port may increase bottom end torque at the expense of top end power. Preparation Before PortingPorting begins with the carburetor, intake manifold, and header. There are a lot of good CNC porters, however, it all is dependent upon who is hand porting the head to program the CNC machine for your heads. Each application may call for a little more or a little less depending on your expectations and engine modifications. Our extensive line of American-made performance parts include our legendary Branch heads, cylinder head porting, and pistons; all designed to help you get the most out of your Harley Davidson. Major Brands - Whether you are running a Ford, Chrysler, Chevy, Honda, Mitsubishi, Toyota or Harley we can give you the power and reliability you are looking for! All Holeshot Performance Products are intended and legal for closed course competition use only, never to be used on any genes in our "blood". We blend in this area by hand on all our valve jobs to ensure the best transition and the most air flow. Any size difference creates all kinds of airflow disturbance issues that adversely affect power. Our repairs typically feature valve jobs and resurfaces. We Port & Polish Chevy LS1's, Lt1's, 350/400/396/454's. Rather average power and application. when we agreed to develop the top half of his famed race winning cars back No matter if its boosted, Nitrous, or Naturally aspirated porting is not to be over looked. . It must first begin with induction and exhaust because a port job is only as productive as its weakest link. If it has a valve I can Port IT!!!!!!! cylinder head rebuilding services. . On the intake side, we want to increase air speed and volume. Simply put, we fix the broken, resurrect the old, make the new better, and make the fast go faster. Copyright 2023 Hand Crafted Performance - All Rights Reserved. Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve their air flow. 540 Old Arley Road, Houston, AL 35572. Please note! Includes bowl port. Just a valve is not enough when performance is your goal! The transition from the port to the valve job is a very crucial area and must be addressed. Approximately 95% of our customers have joined our Private Label Program. My new head port shop. We offer a fully ported street head combination that includes a 3 angle valve job as well as matching the intake manifolds, de- carbon, disassemble and reassemble. In newer engines these issues have been addressed, as well as better factory designs, though sometimes economy comes before performance, leading to a compromise in cylinder head flow. Perhaps the commute will involve some weekend racing or friendly open road rivalry. We specialize in CNC-machined valve seat profiles which enhance air-flow and extend valve seat life. If you don't, expect a different set of heads. Volume always helps power, but we want smooth volume. We specialize in providingcustom cylinder heads that are tailored to work the best for a customer's particular needs. Contact. What do you want your engine to do? Over the years On the exhaust side, we want to limit restrictions that impede exhaust gas flow and retain heat. The BBC Victor flows 39 CFM's off from best runner flow to worst. . We have 22 years of experience in CNC porting and port 100s of heads weekly. Larger valves have little worth when there's lots of iron or aluminum in the way. We spend countless hours researching and testing our port designs. WE HAVE THE EXPERTISE TO VASTLY IMPROVE YOUR ENGINE'S PERFORMANCE . Short turn: A short radius turn, typically at the port bottom. Another important consideration is valve seat and valve shape. Velocity is simply air speed, how fast air and fuel move through an intake port. Cylinder-head port design and modification has been a source of speculation for as long as there have been internal combustion engines. Performance CNC is family owned and Dale has now teamed up with porting expert and good friend Gary Dye, to once again offer our customers quality cylinder head porting. The main goal of our CNC porting service is to gain you maximum air flow from your stock or aftermarket cylinder head castings. 9380 Bond Ave Suite B, El Cajon, CA 92021, Phone: 619-258-6306 | Fax: 619-258-6309. We want increased velocity while we're at it. Manifold selection isn't just about single-plane versus dual-plane, it's also about port compatibility. Signal Hill, CA, 90755, United States. Other services we perform include valve seat and valve guide replacement, along with cylinder head porting and flow-bench testing. Feel free to contact us for any custom quotes. With our state of the art Haas ES5-4t 5-axis CNC machining center and digitizing equipment, Mike's Racing Heads can duplicate Your current porting program or design and produce a new porting program for your shop. Any other product names are the trademarks No two cylinder heads are ever the same. Now how many company's offer shipping deals like us???? vehicles so installing them is at the sole discretion of the buyer. Long-side turn: The path along the port roof down to the valve seat. Trust: Performance CNC ensures trust through our comprehensive NDA (Non-Disclosure Agreement), AND a reputation for honoring trade secrets. We will Port and Polish your heads to work better with your modifications and vehicles intended use. Q: Can my local engine builder port my heads? Others names would follow: Mickey Thompson, Don Pruhdomme, Holman/Moody, Smokey Yunick, DR offers port designs for a multitude of options to accomadate all types of racing and riding including; MX, Desert, Drag Racing, Flat Track, TT, Ice Racing etc.DR performs their extensive port modification process on all 2-Stroke cylinders it ports. Dale can go over this with you before sending us your head. Think of a porter as a sculptor, who incorporates specialized tools instead of hammer and chisel, and whose marble is your Harley's cylinder heads. New modified cylinders are available for some models * inquire to DR for availability. No Cost, Free Quotes 1 YEAR WARRANTY see exclusions* RACE PROVEN Dyno Tested FAST TURNAROUND Quality Assurance Easy way to get your work scheduled in CALL OR EMAIL US Took all my cam profile information to ensure a package to perform well. Disguise Work CROW PERFORMANCE - VISTA, CA. It's not always about achieved power. Fax: 559-227-4773. . !!!! Matchmaker, MatchmakerIntake manifolds and carburetors are just as significant to porting as the human eye and a grinder. The turn around time varies. means, electronic or mechanical, without first obtaining written permission from the publisher. Q: I'm running forced induction, why should I use ported heads? Hours. A head with no pushrods (overhead cam) may have straighter ports leading to more mid-top end flow (at the expense of timing component drag). We specialize in LS1 aluminum intakes, LT1 aluminum intakes, Mustang 5.0 Upper & Lowers, Dual Plane Intakes, Single Plane Intakes, Small Block & Big Block Cylinder Heads. A: Yes! 5 Axis CNC Head Porting 5 Axis CNC Head Porting Service At Direct Motion, we use our own machine tool control technology in house for 5 Axis Head Porting & Digitizing. Some people believe that more is better, but in reality, engines require a certain amount of air in a given cycle. 760.295.3303 . We can also supply the head core if it is available. We Spend many hours on the flow bench ensuring we find every bit of power hidden in your cylinder heads. All 3 angle valve jobs are done on a precise Serdi machine, never hand cut. You could say we Approximately 95% of our customers have joined our Private Label Program. It is often thought that on a forced induction application like supercharged or turbo that the head restriction doesnt matter and porting the cylinder heads is irrelevant because you are forcing the air in anyway. The turn around time for a full street port head service is normally 2 to 4 weeks once we receive cylinder head, depending on parts needed and other factors involved unless something is back ordered. The choice is yours. Cylinder Head Porting; Parts; Projects; Testimonials; Contact; Cylinder Head Porting. The SBF Super Victor 24 CFM's off from best runner flow to worst. (818) 993-7000. To take advantage of valve sizing, we have to watch valve shrouding in the chamber. 836 Antiquity Dr. Fairfield, Ca. However, it depends on the person doing the port work. free shipping offer All we ask is that you clean the head thoroughly as well as the gasket surfaces. Intake-manifold ports must match cylinder-head ports. Are there any heads that you are interested in, that are not listed on this webpage? We want hot gasses to roar out of the chamber rapidly and with a minimum of turns. Measurements in a performance engine are very crucial and the cylinder head is no exception. Easy projects can be completed in two weeks. That is 6% off. But did you know there's a lot more to cylinder-head porting and power than cylinder heads themselves? At Hoopers Heads we are sure to measure and inspect all the parts before assembly. Approximately 95% of our customers have joined our Private Label Program. We specialize in custom late model cylinder head and intake manifold modification and design. PowerHeads uses CNC technology to hog out the intake and exhaust ports on 260, 289, 302, and 351W heads to make them one of the greatest performance values in the industry. No Questions Asked. Throttle Bodies: Tier 1, Tier 2. Join the Private Label Porting Program: We keep your Name and Design Confidential. Dale & Gary are both on the same page when it comes to port shape, size and what should be done for different street motor applications. Be sure to check your local laws. Rough surfaces affect fuel atomization and ignition. Gary has spent countless hours on the flow bench with 2, 4 & 5 valve heads and knows what works to make a good spread of power across the board. This is the "Moved Centerline" head for Bigger Valve Setups and Max Performance. Why people are getting so caught up in CNC porting, they do not realize that your intake could be as much as 20 CFMs plus (+) off from one runner to another. ! Next-Gen Ford Mustang Shelby Spied Testing, 500 cfm Mild 600 cfm if fitted with a high-performance camshaft and heads, 500-600 cfm Mild 600-650 cfm fitted with a high-performance camshaft and heads, 600-650 cfm Mild 650-700 cfm fitted with a high-performance camshaft and heads, 650 cfm Mild 700-750 cfm fitted with a high-performance camshaft and heads, 700-750 cfm Mild 800-850 cfm fitted with high-performance camshaft and heads, 850 cfm Mild 900-950 cfm and higher when there are significant engine modifications. Holeshot Performance customers must sign and return our disclaimer release form Air and hot gasses need to flow smoothly around open valves. You supply the design; we CNC that design and your Logo - exclusively for you. Turn around was less than two weeks and half that was waiting on valves to show up. No Questions Asked. The SBC RPM 19 CFM's off from best runner flow to worst. Duncan Racing International, Inc. 2023 | All Rights Reserved. Phone: 619-258-6306 | Fax: 619-258-6309. sales@duncanracing.com. Dale & Gary have over 45 years total combined experience building high performance engines, porting cylinder heads, and Dale's racing experience speaks for itself. Cylinder Head Porting Level 'B' CNC CVO CNC Street Outlaw CNC Fuel Moto offers comprehensive in-house cylinder head services for late model Harley Twin cam engines. You supply the design; we CNC that design and your Logo - exclusively for you. Including but not limited too; cylinder boring and honing, resleeving, welding, thread repair, surfacing etc. Thus the need to match any and all ported cylinders with modified head that is matched to cylinder port modifications. . West Coast Racing has programmed a CNC stage 2 porting program that really is an improvement over the stock cylinder heads! And while cylinder heads still are the core of our business, The finished work was amazing. headbolts, spark plugs, pushrods, valve angles, spring pockets, hood clearance) and there must always be compromises to get the best possible outcome of all of these factors. DR offers their world famous Paul Turner Racing to clients around the globe. Port wall: The vertical sides of each port. CNC Fully Ported Heads Our CNC Fully Ported heads are 100% ported to maximum we can safely get out of the cylinder heads. include our own dry sump oil pumps and our Thunder Power 4-valve cylinder heads Cylinder Head Services Livernois offers something that most of our competition just can't match, complete in house cylinder head development from start to finish. (256) 347-8453 Phone: 559-227-4773. When we port a set of heads, we gauge each runner in certain KEY Locations for MAX FLOW. A: Lets say a LS makes 800 hp on 20 pounds of boost and factory heads. Chances are it won't be the first time they've done it, either. TO GET ON THE CUTTING EDGE OF PERFORMANCE, GIVE US A CALL. PowerHeads will install your valve springs at the same time. yoesracing@sbcglobal.net. Everybody is worried about whether or not every runner is going to be exactly the same, They do not realize that after the CNC Program has been complete, that each runner flows 3% less than the hand ported head which programmed the CNC Machine. over 55 years of experience. ***CALL FOR PRICING DUE TO NATONAL SHORTAGE ON PARTS AND MATERIALS***CUSTOM - SPECIAL MACHINING or ENGINEERING BY QUOTE. We take measurements very seriously and know exactly what you can and cannot get away with to ensure the best price and reliability. First established in 1965, our humble beginning started by porting cylinder heads for local This engine could achieve the same 800 hp on 10 pounds with a smoother power curve. Porting Packages. The answer is no, however, people do not realize that the head has to be hand ported to program the CNC Machine. Gary will pull your head apart and do a full inspection first, then Dale will contact you to go over the overall condition, parts needed and what you can expect before any further work is started. DR also offers various other cylinder services that are associated with porting. Email: We not only produce these we can install them for you with the use of our custom cam journal boring fixtures. From light de-shrouding, to major port changes, Steve's offers many stages of cylinder head porting in an attempt to maximize cylinder head CFM while maintaining air speed. 16126 Cantlay St. Van Nuys, CA 91406 (818) 705-5454. www.proheads.com. You could say we Another consideration for your porting efforts is valve lift. of their respective holders. We use cookies to analyze website traffic and optimize your website experience. Many of our products are illegal on pollution controlled We perform port & polish for a lot of individuals because of our we have one of the most complete engine shops in Southern California. In some cases surfacing is also recommended, and new valve seals are mandatory.These and any other parts that may be needed will be an extra charge. we offer porting for everything from a predator engine to atvs, snowmobiles and side by sides! 2023 Southern California Cylinder Heads. we have also developed products that bring better performance to modern engines that over 55 years of experience. Copyright 2023 Hooper's Heads. WHY YOU NEED CNC PORTED CYLINDER HEADS. Our objectives are smooth surfaces and turns. Please check out the Store, the Datsun cam oiler is now for sale. Another possible factor is that there are a lot of components that have to be made to fit on any particular cylinder head, (i.e. No matter what your application we can design a custom port sized and shaped specifically for your application. So, more or less, we port a set of heads, we get the peak CFMs from each runner from the same heads consistently. SCCH offers Several Stages of head work for your VW 24 Valve Vr6 head, ranging from a basic rebuild to a full comprehensive port and polish utilizing custom valves for optimal flow and efficiency. You supply the design; we CNC that design and your Logo - exclusively for you. All Rights Reserved. No Questions Asked. No matter if we did the work or not we measure or double check spring pressure, guide clearance, installed height, and coil bind clearance on all our builds to ensure quality. Thus the need to match any and all ported cylinders with modified head that is matched to cylinder port modifications. To provide a safe environment where our team members are encouraged to strive for the their best day-in and day-out. Need Some Inspiration for EV-Converting Your Classic Car? for Sale!!!!!! Porting begins with the intent for the engine. The SBC Motown 58 CFM's off from best runner flow to worst. Q: Can I make more power on my factory engine with just ported heads? All Rights . 4-Stroke Cylinder Head Rebuild. So the goal is to raise the amount of total CFM, within the requirements of the engine, while keeping the air speed as high as possible. A: unsure who your engine builder is, here are a few questions you can ask to test their knowledge in porting. Are you going racing? Every cylinder head is different and so are the requirements. Dealt with Shawn Hooper directly and it was a pleasure doing business. We are one of the country's largest power sports cylinder head re-manufacturers. operated by 3rd & 4th Generation Machinists with Service Prices. Cnc ported cylinder heads are a must for anyone looking to expand the power . Phone: Copyright 1999-2023 SteveSchmidtRacing.com. Add $100.00 USD to your Total! Long turn: A long radius turn, typically at the port roof. Approximately 95% of our customers have joined our Private Label Program. Home. This will not make power and wont last very many miles in the real world out on the road. Cylinder head rechamber or match with billet head. Clients ship their top ends (cylinders, heads, pistons) to DR *include Completed DR Work Order Form when sending in your components to DR. DR performs the modifications and returns to client. A large port may increase maximum horsepower and peak torque at the expense of bottom end power. Intake Manifolds: Tier 1, Tier 2, Race, Max effort. specializes in Precise Reverse Engineering of Racing Cylinder Head Ports and Chambers and the precise machining of Master Model Details using 5-Axis CNC Equipment. crowperformance@gmail.com. To provide all types automotive enthusiasts the highest quality machine services and aftermarket parts available on the market regardless of what their requirements may be at a reasonable price and complete work in a reasonable amount of time. E-mail: info@protechracing.net Home | Services | Gallery | Contact Us . Cylinder Head Porting, Antique and Hi-Performance American Motorcycles. These Builds Might Help, Borla Active Performance Sound Is Coming to Make Your EV Sound Exhaustively Less Electric, Ford of Europe Is Going More Murican by Introducing Bronco and More SUVs, A Ford Mustang GT3 and New Performance Pickup Could Come Sooner Than We Think, The 2023 NASCAR Clash at the LA Coliseum Was Another Hit, Exclusive! MMR is no longer your only option for billet cam caps! We have spent many hours finding the right angles to use on specific cylinder heads to ensure maximum power and life expectancy from your combination. listed below are package names in the order of lowest to highest performance gain. Guy can do it all so definitely check him out. Maybe thats just the equipment they use, if you cant compete on quantity then compete with quality. Late model singles and twins are priced upon request, Call Dale today and he will be glad to answer any questions you may have about our Holeshot port work and cylinder head service. Including PTR Pipes, Fat Boy 2 Silencers, PTR Porting, Powerheads, Pyramid Reed Valves.DR signs all 2-Stroke Cylinders with the PAUL TURNER RACING logo, Contact Duncan Racing for more information phone 619.258.6306 , email sales@duncanracing.com. View Larger Map . Specialists in cylinder head and intake manifold CNC porting, designing, manufacturing and machining for late model street and race cars. Checkout. This entails evaluating what type of camshaft, compression ratio. On the exhaust side, we want hot gasses to leave quickly without a traffic jam. . For velocity and greater volume at high revs, larger valve sizing becomes important. CNC Ports: All packages listed in "cylinder heads" also offer CAD design. We cannot overemphasize proper port matching. Performance Products, Inc. No part of this publication or website may be reproduced or transmitted in any form or by any We also do 1,2,3,4,6,10, and 12 cylinder engine head work. Race Tech porting is developed using a combination of flow bench and dyno data. At Abbotts SuperFlow Port & Polish we take a lot of pride in porting and polishing intakes and cylinder heads. Pro Sportsman Porting Work- Call for Pricing! Q: I Installed A aftermarket camshaft, what port package would be the best? 19340 Londelius St., Northridge, CA 91324 USA Tel. Do yourself a favor and call now for expert advice from DC V-Twin at 478-988-4313 and enhance the performance of you Harley. when ordering certain products before the order may be completed, stating that you are aware that the product you are have performance, precision and machining We are the largest, most effecient, and accurate CNC head porting operation in the world. So unless your runners on your intake are balanced out, even your CNC Ported head will be unbalanced from runner to runner. SST Head Porting Our "SST Porting" is for applications where porting the head is allowed and, because of the application, the cylinder head just doesn't need to be fully 100% ported. We work on so many different types of heads that it would be impossible to set a fixed price for most jobs. What's more, valve seat angle(s) determines flow as well. A couple years ago Lee spent some time with Joe Mondello, the cylinder head porting legend. We also offer a budget minded cylinder head rebuild, that includes 3 angle Serdi valve job, matching intake manifolds, and bowl porting only. while flow specs are only a small amount of information to show how a cylinder head will perform, it's the easiest data for you a customer to understand.). Didnt try to over sell what I didnt need. This is not the time to just throw your heads together. Contrary to what you might have learned in bench racing, larger port size does not always mean more power. 5-Axis CNC Porting of Intake and Exhaust Ports. Cnc ported cylinder heads are a must for anyone looking to expand the power potential of their engine! CYLINDER HEAD PORTING FOR DOMESTIC, IMPORT, MARINE OR MOTORCYCLE, STOCK TO ALL-OUT COMPETITION. Cylinder Head Porting Pricing is for traditional V-8 cylinder head pairs. CYLINDER HEAD PORTING BEFORE AND AFTER ON HD HOOLIGAN EXHAUST PORT Every application requires a specific port design to match the goals of the end user. We use a PCD cutter to ensure a RA of 11 or less, Not all valve jobs are created equal! This is bonus energy we wouldn't have without good valve overlap. We also have several Join the Private Label Porting Program: We keep your Name and Design Confidential. The Number 1 Question I get is Do you CNC Port? Will you need my cam card? CNC Ports: All packages listed in "cylinder heads" also offer CAD design. Valley Head Service is one of the few throwback machine shops in Southern California to survive into the 21st century. Our Free Shipping Back to you (U.S.Domestic) 832-619-1622; . Cylinder-head porting begins with the proper cylinder head, intake manifold, and carburetor. ***CALL FOR PRICING DUE TO NATONAL SHORTAGE ON PARTS AND MATERIALS***, HRE All Sheet Metal Intake Manifold for Dual Carburetors, HRE All Sheet Metal Intake Manifold for Single Carburetor, Edelbrock BBC "SSCE Custom" Super Victor Intake Manifold, Big Block or Small Block Chevy Aluminum Oil Pan, Moroso "Original" 3-Vane Racing Vacuum Pump Kit, Moroso 4-Vane "Enhanced Design" Vacuum Pump Kit, Manton Special 7/16" Heat Treated Pushrod Set of 16, Angle Mill Head Correct Int. Experience: Performance CNC is family owned and Outside wall: The port wall which leads to the outside. DR also offers various other cylinder services that are associated with porting. Wed 8am to 4 pm. Our goal has always been to work closely with our customers and ensure they get exactly what they want to fit their application and budget. Easy transaction, no bulls*** to mess with. Good low-end torque calls for conservative valve sizing depending on how you're going to use the engine. Going with larger valves doesn't always help power. The biggest concern needs to lie into your intake, people spend $100s of dollars on a set of good ported heads, and just bolt their intake on AS CAST, when the intake was formed it was intended for it to be match ported to your heads. Using our SF1020SB flow bench we can ensure our flow data is correct. We Port & Polish Dodge Mopar Heads 340/360/383/440's. Eyes and ears need to tell the rest. Shipping Address: Experience: Performance CNC is family owned and 2.400 to 2.425" Intake Valve 1.810 to 1.880 Exhaust Valve. Performance CNC specializes in Precise Reverse Engineering of Racing Cylinder Head Ports and Chambers and the precise machining of Master Model Details using 5-Axis CNC Equipment. Side & Ream Head Bolt Holes, Finishing of Custom Unfinished Race Block, Machine / Align Bore for Big Ford Cam Bearings, Balancing V-8 Assemblies (Heavy Metal to Balance Additional Time & Material), Intake Match, Bowl Blend, Polish Chamber& Exhaust Port (Pr). If this is the case, then email us at ronny.68@live.com and we can get any head and match Summit Racing, JEGS, or Barnett Prices!! After porting the intake and exhaust bowls, we moved on to the chambers to unshroud the >> valves. Valley Head Service 19340 Londelius St., Northridge, CA 91324 USA Tel. So do air and fuel droplets. All rights to use this publication are exclusively owned by, and proprietary to, Holeshot GM LT, LS7, LS3, LS9 and LSA CNC ported . 993-7000 -- all Rights Reserved at the expense of bottom end torque the... Torque calls for conservative valve sizing becomes important determines flow as well and half that was waiting valves! 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