• Fits without modification in any street car. Chevrolet Serial . 1946-1977 Beetle Cylinder Head 94mm Wedge Port GTV-2 Stage 2 Pair 42 x 37.5 ... VW: (866) 350-4535 Corvette: (866) 350-4540 Sales Center. The use of this Kennedy pressure plate eliminates the grinding and fitting of the engine and starter bushing adapters for the 12V/200mm flywheel and clutches. vollks.com.au has all the essential Air-Cooled VW parts whether you are doing a Air-Cooled VW restoration, modification or resto-mod. But the bigger you go, the more expensive your engine will be to build. In addition to the engine work, the longer strokes require that you also address the issues of the exhaust system and tin being too narrow, etc. Just check out these features: • Computer designed intake ports. The mystery and concern regarding parts clearancing for large engines is overrated and a highly misunderstood part of performance engine assembly. Putting an oversized engine in a small engine compartment is a very involved “step” with many ramifications. Both the 1500 and 1600 engine use the same bore size in cylinder head, but the 1300 cylinder head is smaller. 311-628. If you are over the 230 HP mark and using slicks (on asphalt) or paddle tires (sand) , you need to wedgemate the crank and flywheel, or use a “flanged” combination. AIRCOOLED.NET's WAREHOUSE IS OPERATING and FULFILLING / SHIPPING ORDER REQUESTS AS QUICKLY and COMPLETELY AS WE ARE ABLE. The end result are heads that require ‘freshening up’ by a good head porter in as little as 5000 miles, and right around that time, you get to buy retainers, guides, valves and springs all over again! Aircooled.Net offers the service of cutting and assembling your pushrods, saving you the do-it-yourself grief. Sound arduous? We rely heavily on email as the most efficient and accurate way to serve our customers. Next increment is the 86/88/90mm crankshaft. 140 HP will keep even the Mustang GT’s in your rear view mirror on the street, and 180 HP will eat Corvette’s and Vipers for lunch all day. But, on the other hand, if the engine overheats, a dual port head is more likely to crack than a single port head is – so this is where the factor of engine life comes in. The solution is to either strengthen the existing rocker assembly or install the alternative: Ratio Rockers. If you upgrade to dual valve springs, you also need to upgrade to solid rocker shafts, with bolt on ends. Normally I would recommend that you use the 200mm clutch size, since it has much more grip. In camshaft selection you trade off low RPM for high RPM power or vice versa. “Stroker” refers to any crankshaft with a stroke longer than stock, (which in the case of Type 1 engines is 69mm). Slip in piston and cylinder sets are available in ‘size upgrade’ of 87mm and 88mm, but we do NOT recommend them EVER, PERIOD. MOFOCO boasts the only completely MADE IN USA VW Aircooled Cylinder Heads. Performance engine building is, by no means, a simple endeavor. The most recent 044 heads are an excellent basis for port sizes that would normally require welding on the cylinder head. Simple. A performance engine will put out more power than stock, and cast cranks will break or flex, it’s just a matter of when. Longer crankshaft strokes require a longer connecting rod, and/or a stronger or a better-designed rod connection system. dual port only increase the Hp output by about 3. and the fuel consumption remained unchanged. (Climate and/or elevation can affect some of your choices), Before we go any further into the discussion of serious engine modifications, I suggest you implement the bolt on changes that are recommended in the Aircooled.Net article ‘, Bolt On Modifications – Getting The Most Out Of Your Stock VW. FAST 'N FREE. Use the product descriptions in our catalog to help you choose the right set of heads for your engine. Cam selection should really be done last, after choosing heads, carburetion, and exhaust. (We are more than happy to help you with your cam selection when the time comes – email. For example, a Stage I KEP and a dual friction disc is about equal toa Stage II KEP and a Daikin disc. Get it as soon as Thu, Dec 10. How important is engine life/longevity to me? leave them sticking out about 1/2" from the cylinders - enough space to install the push rod tubes. Obviously on Single Port heads, the shared intake port is more restrictive and will limit power potential. Get it right! The cylinder openings in the head are roughly 94.5mm. i dont completely agree with the other answer. In general, the more duration a cam has the larger the engine needs to be to run it, AND the higher up the engine’s RPM band will be. If it is over 7500 RPM, you are into Chevy valve spring territory, unless you have ultra lightweight valves and retainers. The dual friction disc requires a pressure plate one step lower than the Daikin. if you want to increase horse power you need to pump more fuel and air into the cylinder. You must be honest with yourself about your intentions and your budget, and hopefully you will be able to find a happy medium between the two. The Series 3 and 5 heads are also fully driveable. Engine selection is a series of compromises – you can’t have everything! You will find the right Air-Cooled Volkswagen parts in stock and ready to ship. Since the cylinder is attached to the crankcase, you need to use cylinder spacers to adjust the compression ratio to where you want it to be. Does my vehicle type have any inherent performance limitations? High Performance Dual Port Cylinder Head Complete made from high quality aluminum alloy, permanent casting
Add to this a budget restraining effect, and you can see the balancing act that must occur. 82mm crankshafts require the use of I-beam or H-beam connecting rods. ‘. 90.5mm: This is a very common bore size. There are two basic reasons for this: One is the extremely restrictive intake and carburetion setup of the stock engine (single ports are even worse!) The word "Volkswagen" and "VW" are registered trademarks and copyrights of VWoA. However, 88s are very good for busses and type 3 engines, since these engines run hotter than beetles, ghias, or buggies/rails. 311-620. With the 78mm crank you can get away with using a $140 set of reworked connecting rods (or our 4340 I-beam connecting rod set, which is a real bargain!). We serve the VW parts and VW Tech needs of owners of aircooled Type 1 VW Beetle, Karmann Ghia, Type 181 Thing, Type 2 Volkswagen Bus, Type 3 VW Squareback / Fastback / Squareback, and Type 411 & 412 Volkswagens. Out of the box, IDAs are pretty much either off or on.
The only reason you would ever use a stroker smaller than 78mm would be if you are racing in a class that limits your displacement. SUPER-D 42 X 37 X 94mm bore dual spring cylinder head $ 425.78 Part Number: 25070-94 Add to cart ‘D-Port’ 2×40/44/48IDF Weber/Dellorto DRLA Manifold – Pair 77mm, 83mm, 85.5 mm: Stock VW engines (aircooled type 1 1300/1500/1600 cc) came stock with these piston sizes, respectively. For any other application, cooling is a MAJOR priority. This cylinder head is capable of 90-100 HP. Some people build their engine with the ratio rocker camshaft and use stock ratio rockers temporarily, with the intention to upgrade rockers later (for budgetary reasons. jb has his intake and exhaust ports mixed up. CYLINDER HEAD COMPLETE DUAL PORT NEW FITS VOLKSWAGEN TYPE1 TYPE2 GHIA 043101355c (Fits: 1973 Volkswagen Beetle) $194.00. The decision between I-beam or H-beam connecting rods depends on the maximum RPM you plan on operating the engine at. This is where most engines (including yours) are really restricted, and where money spent will really make a difference. Plan on $150 for this modification, but it’s highly recommended, especially if you have $5K+ worth of parts that can get damaged by dirty oil! Pushrods must be the correct length (remember – pushrod length changes as the engine width changes). The additional displacement is definitely worth it! No Results for "Vw Dual Port Heads" Similar to Vw Dual Port Heads on eBay. Even the stock 1600 dual port is a good candidate for performance tuning. You have to decide which aspects of engine building and performance are most important to you, and then quantify and assign them each a priority. Check both the front and rear of the tins, they should sit level with the cylinders. Note that I said stock rod, not stock rod LENGTH. There are careful decisions to be made with regard to the engine size and components that are “right” for what you have in mind. 28. This disc uses metal woven pucks on one side (for grip), and organic material on the other (for smooth engagement). A great idea to make a VW cylinder head flow chart. Don’t get me wrong though, a dual port head can easily last over 100K miles without cracking, if the engine isn’t abused. The valvetrain is term that describes the system of parts that work together to actuate the valves in the cylinder heads. Rocker Arms Drag race applications (including sand) must use the Stage II so the clutch doesn’t get destroyed! The stock rod length is fine as long as you use a stronger than stock rod. is is as simple a one hole or two holes. These two items need to be treated and selected as a set, not as individual components. Valve Lift is the measure of how far the valve is opened at it’s maximum. Both our brand new SSP Volkswagen Beetle engines and re-manufactured SSP air-cooled Beetle motors are covered by our market leading two-year warranty. Use the stock disc for all applications up to 120 HP. Working from the seat side of the port, start widening the port on either side of the boss just below the seat. What is my gearing and tire size? There are two slightly different standard measures for duration: Advertised Duration (total crankshaft degrees that the valve is open), and .050″ Checking Duration (crankshaft degrees that the valve is open AFTER 0.050″ of lift). VW bug 1600 dual port cylinder head 85.5 bore 40 x 35 SS valves large ports EACH (Fits: Volkswagen Transporter) 5 out of 5 stars (1) 1 product ratings - VW bug 1600 dual port cylinder head 85.5 bore 40 x 35 SS valves large ports EACH. This makes them fairly easy to replace. Stock VW rocker arms are reliable for stock use, but are frail for applications that exceed the conservative stock design parameters. Valve Springs On top of a new manifold, you will need a new carburator. 78mm is the largest stroke you can reliably use with reworked stock connecting rods (but remember I don’t recommend that!) Aircooled.Net offers the service of cutting and assembling your pushrods, saving you the do-it-yourself grief. We've put together a few of our favorite bolt on components that will increase power, performance and still maintain good driving manners and reliability. This will be just a brief summary, and not a full discussion of carburetor selection since I have covered this topic in depth in the article ‘Carbs 101: Selecting the Right Carburetor System‘. Complete Stock w/Dual Springs. The PORT is the limiting factor. From Air-Cooled VW wheels and Air-Cooled VW exhausts to floor mats, car covers and many other Air-Cooled Volkswagen accessories. Aircooled.Net is not affiliated with Volkswagen AG or Volkswagen of America, Inc. or any of its subsidiaries. Camshafts are rated/compared by crankshaft duration. Before we go any further into the discussion of serious engine modifications, I suggest you implement the bolt on changes that are recommended in the Aircooled.Net article ‘Bolt On Modifications – Getting The Most Out Of Your Stock VW‘. This is because airflow through the heads is not significant until the valve is open .050″ or so. All sizes of crankshafts are comparably priced (around $400) – the cost difference is in what additional parts they require for reliable operation. ou need to wedgemate the crank and flywheel, or use a “flanged” combination. (daily driver vs. race vs. weekend warrior vs. sole source of transportation, etc). Sometimes, depending on the pushrod brand, they have to be drilled out to match the pushrod ends! This Kennedy pressure plate is fantastic, and is good up to about 220 HP. The 040 Super Street head is a performance replacement cylinder head with 37.5mm stainless intake valves and 32mm stainless exhaust valves. If you have a 6V car, or have a pre-63′ bus, you likely have a 180mm clutch. Choose from air-cooled single-port and twin-port VW engines in 1200cc, 1300cc, 1500cc and 1600cc capacities. at a glance you can look at what coul be referred to as the intake manifold. These heads have combustion chambers of approx 59cc without modification These sets have the same cylinder wall thickness that a stock 1600 cylinder has, so they are VERY reliable. Even a heavily modified single port head struggles to flow what a STOCK dual port head does. Long reach 3/4 Inch Spark Plugs, to reduce the chance of cracking between the Valve seat and Plug. Well, I’m committed to sharing this kind of advice and information, in fact, I established this company on a common sense philosophy that emphasizes accurate information and technical assistance in addition to our parts sales and service – Aircooled.Net will help you determine and meet your specific goals and needs, so we can sell you the RIGHT part, ONCE, saving you headaches and hassles! This provides INSTANT power, without having to rev the engine a lot, (which only wears out parts fast). Overheating and loss of power are the result. You heard that right. 1955-1957 Chevrolet Front … Use 8mm head studs. You use the adjustable pushrod to cut your pushrods to the desired length then tap the ends in using a hammer and two old lifters (to keep from screwing up the ends of the pushrods). article original post date: Feb 21, 2000 Cam selection should really be done last, after choosing heads, carburetion, and exhaust. But these short rod engines will have a VERY premature engine life, and a very limited RPM range (I don’t recommend them). A second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. For assembly purposes, you need an adjustable pushrod to have any hope of achieving optimal rocker geometry. 92s had problems, so how were 94s going to be better? What is Duration? 69-82mm crankshafts can use the VW (5.394″) or Porsche (5.354″) length rod, IF it is made of Chromoly. A stroked crankshaft allows the engine to make power without higher RPMs. If “rocker geometry” is off, the valve will be pushed up or down, and this results in valve guide wear. So, pay close attention to cooling fins! The 1300cc engine can also be upgraded if you bore the 1300 cylinder heads out to the 1600cc size, or replace them with the 1500 or 1600 cylinder head. (aka: How much will my wife let me spend? It's a 1600cc dual port original German VW factory head, with no damage. The stock crankshaft stroke on the 1300/1500/1600 engine is 69mm. 36-40 HP engines are small, and you should not attempt to build a performance engine from these starting points. Other options New from $31.12. For stock engines, I strongly recommend the use of the dual port head if you are going the performance route. NO LINE BORED CASES. The best all around performance head for street cars that we sell is our Series 5. A 1969 Beetle would have originally come with a single-port engine, but the twin-port engine is better. Another excellent disc is the Daikin. This determines the operating RPM range of the engine. Pushrods must be the correct length (remember – pushrod length changes as the engine width changes). This is one of the most intricate parts of engine building. The engine compartment of your vehicle is going to dictate some of your engine choices because of the relationship between rod length, crankshaft stroke and engine width. Each head covers two cylinders. This is true unless you have a buggy or sandrail, which are both very light. Am I prepared to put more money into a car than I can reasonably expect to get back out of it? One more thing: things start getting pretty tight in that engine with a crank of this size, so you had better know what you are doing if you get one! Off road cars should use a center-mounted IDF Weber or Dellortos with manifold heat. In other words, we simply sell quality VW engine, interior and exterior parts as well as provide professional VW engine performance services for your favorite Volkswagen classic models. This cylinder head is so versatile that it even works on busses and Type 3s. Prior to 1966, Beetles and Ghias came equipped with these engines. Once you decide to run at higher than stock RPMs (4500 redline), or install HD valve springs, or a high performance camshaft, the stock rocker assemblies WILL fail, it’s just a matter of when. We provide the classic VW hobby with tech tips, project advice, and quality parts for VW Restoration, VW Performance and Custom Aircooled VW projects. These work VERY well, but you are looking at a lot of machining (this costs approx. FREE Shipping by Amazon. It works ‘okay’ for low mileage race applications, but it’s prone to the same problems as the 87/88mm slip in combination. This does not matter for an engine installed in a sandrail, dune buggy, or racecar. When you upgrade to HD valve springs, you must also upgrade your pushrods and rocker arms. The longer the valve is open above 0.050″ lift, the more airflow you will achieve at high RPMs, but this is at the expense of low end power. It’s a little more difficult to work with than the 044 (which most shops consider to be the standard of VW performance heads currently), but we feel the end result with the 043 is superior. VW DUAL PORT HEAD STUD KIT - 8 MM. If you are looking for Air-Cooled classic Volkswagen parts, you have come to the right place. Relatively speaking, it doesn’t take a lot of power for you to really get moving! Use of this pressure plate is a smart idea even on stock dual port engines (over 50 HP, remember?) Pushrods A pistons are used on up to 76mm stroke engines and B are used on 78 and longer stroke engines. Only 1 left! Silicone Push Rod tube Seals, high temp. Dual Port heads have an intake port for each cylinder. Latest Additions. (the upper echelon (180 – 200 HP) of performance VW engines typically need this kind of attention). To strengthen a stock rocker assembly, you simply shim the rocker assemblies to remove the “wavy washers” (the washer with a concave shape). “Rod Ratio” is the length of the connecting rod divided by the crankshaft stroke. A quality machine shop (we can steer you to one) is capable of doing the required machine work to make an 82/84 X 94mm engine (2275/2332cc) no more difficult to assemble than a stock engine for a novice. Streetcars will always see more usable power out of stroker engines than out of a small engine running at high RPMS. As you can see in the photos, I cleaned it good enough for installation, but I do not have a bead blaster, so this was as clean as I could get this head. (Stock are 85.5 1600cc These are awesome heads with NO ISSUES) Complete Stock w/Hi-rev springs. Camshaft The cylinder hole in the case is the same for all 3-engine sizes! Plan on $60 for a GOOD kit. What can I afford? Other companies may suggest the use of reworked stock connecting rods (which will cost around $120 for a good set) – but when you can get new 4340 I-beam rods for $150 a set, it doesn’t make any sense. 94mm cylinders have the same cylinder wall thickness as the stock 85.5mm set (1600cc). (We are more than happy to help you with your cam selection when the time comes – email email@example.com with engine specs and compression). http://www.chircoestore.com/catalog/index.php?cPath=109_115_126 Chirco.com carries a new 1600 Dual Port Head that is casted perfectly. The VW dual port head is originally used on 1971 through 1974 VW Beetles & Karmann Ghias, 1971 Type 2 Bus Models and 1973 to 1974 Things. Chalk it up to another nonsensical design flaw, but these DO NOT WORK. But, on the other hand, if the engine overheats, a dual port head is more likely to crack than a single port head is – so this is where the factor of engine life comes in. Engine size is a function of piston diameter and the stroke of the crankshaft. It’s a pain at first, but after a bit you get the hang of it. If your rods fail, you get to START OVER FROM SCRATCH since all your expensive parts are junk – new everything – so why risk it? Buy Vw Dual Port Heads on eBay now! Don’t compromise, and use a new case. Our 4340 Chromoly I-beam rods are good to 6500 RPMs, and if you plan on going higher than that, (or want peace-of-mind) you need the 4340 Chromoly H-beam rod (about $300-320 a set of 4, depending on length), which is good to 9000 RPM or 500 HP. (Two examples that spring to mind (pun intended :0) are: pounded out cases and popped out wrist pin clips). Find the most expensive set you can afford, then get the ones 1-2 steps higher than that! There are also “high lift” cam designs, that give maximum power, at the expense of noise (they are louder), and accelerated wear to the valvetrain. 1946-1977 Beetle Cylinder Head 94mm Dual Port 44 x 37.5 S/S Valves Each $476.97. When it comes to performance engines, in general, “Jack of all trades – master of none” is the axiom that applies. This means that a 1500cc engine can be upgraded to a 1600cc engine by simply installing the 1600cc piston and cylinder set! The crankshaft turns the camshaft. Once you’ve got all your engine components selected, you will almost always need cylinder spacersand/or head gaskets to set the engine’s deck height. This head puts your engine in the 220 HP range assuming the rest of the engine is set up to make use of it. Rest assured that heads from AC.N are the finest that you can buy for across the board performance. Slip in piston and cylinder sets are available in ‘size upgrade’ of 87mm and 88mm, but we do NOT recommend them EVER, PERIOD. Most of these “big valve” heads have stock size ports. CYLINDER HEADS Type 1 Split-port head Kit 50 X 40 X 103.0mm bore - .765 shaft. The .050″ number is what really tells you how the cam will behave in a certain engine. More lift is better, when trying to increase engine power because more valve lift increases airflow and thereby increases power potential. When you stroke an engine, I feel there is no point in using a crankshaft smaller than 78mm. The more money you spend, the bigger ports and valves you will get. The staff here at Headflow Masters continuously attempts to provide you with the most accurate information found on this site, but mistakes may arise. makes for a strong Cylinder head that looks as good as it functions.Features 12mm, 3/4" reach plugs, silicone bronze valve guides and with 40mm / 35.5mm valve seats installed
If you have a set of IDAs you would like to use, check out our article ‘Carbs 104: Rebuilding Weber IDAs’. Sound arduous? Most stores (including Aircooled.Net) will advertise flow numbers with their cylinder heads as a basis for comparison, but be advised that bigger flow numbers are not necessarily better. How will I be using the vehicle? You can purchase racing heads which have HUGE valves and ports, but have diddly for cooling fins, so they may not meet your application needs if you regularly drive your car on the street. The more air that can flow in and out of your engine, the more potential you have for power. 10mm studs don’t do this, and that’s why 10mm stud engines have a problem with pulled studs. last updated: June 19, 2013. Next, place the head on the cylinder studs. The .050″ number is what really tells you how the cam will behave in a certain engine. Are you prepared to tinker with it every other weekend? However, for applications with more than 50 HP, and up to about 120 HP, you can use the, This will be just a brief summary, and not a full discussion of carburetor selection since I have covered this topic in depth in the article ‘, This may come as a surprise, but basically, the advertised camshaft duration is a meaningless standard of measure. Price: $44.95. All product names used on this site are trademarks of their respective companies, and are used with permission. All Rights Reserved. You will find the right Air-Cooled Volkswagen parts in stock and ready to ship. When you move up to the Series 7 heads, you will experience a decrease in driveability with the increase in power. 77mm, 83mm, 85.5 mm: Stock VW engines (aircooled type 1 1300/1500/1600 cc) came stock with these piston sizes, respectively. If you are on a tight budget, and want to maximize your displacement you should go with the 82mm with I-beams. From 120 HP and up, you have the option of using our dual friction clutch disc. Do not expect a high lift cam to live longer than 40-50K miles on any engine! Well it is, but guess what!? Where do you live? High Performance Dual Port Cylinder Head Complete made from high quality aluminum alloy, permanent casting ... modification or resto-mod. The used ones out there are worn out, and not up to the task, so just factor a new case and machining into your budget from the beginning. You are finally beginning to get a substantial displacement increase for your $. The Beetle (and other Type 1 VWs) are fairly light cars. It’s one of the few parts that let’s you have your cake and eat it too! The difference between the two versions is the location of the wrist pin hole in the piston. VW Type 1 Dual Port Cylinder Heads Pushrod Tubes Gaskets Top End Kit T1 Beetle (Fits: 1973 Volkswagen Beetle) $357.24. These heads have been ported and polished for … How much power do I want/need? Well, the jury is in and 94s work. VW 1600 Dual Port Cylinder Heads, Stainless Steel Valves 35.5X32 "Pair" This is a brand new, Pair of Cylinder Heads for a VW Type 1 2 or 3 Dual Port. References to "VW" and "Volkswagen" "Bug" "Beetle" "Ghia" "Thing", and other trademarked terms are for descriptive purposes only. I have never found another clutch disc this versatile! DUAL PORT ENGINES: you have a lot of options, we’ll start from the bottom and work our way up, with the accompanying logic so you can follow along. I am a proponent of huge engines and mild cams. The downside is you can expect to pay $2-300 more for a ratio rocker arm equipped engine, since you have to buy the ratio rocker set. There is a sharp edge on most heads on the inside radius of the port, and it is almost impossible to … The camshaft lobes push the lifter outward. The stock rocker ratio was 1 to 1 on early 40hp engines, and this ratio changed to 1.1 to 1 on late 40hp engines and all 13/15/1600cc engines. This means they can only open the valve so far before they have to start closing the valve again. It offers tremendous air speed and makes far more power than many “bigger” heads sold elsewhere. Email response times for simple inquiries are often quick (within hours), but if we need to look up info or get product ETAs for you, please allow for 1-2 business days to receive a reply. If your engine will be revved over 4500 RPMs or if you use a camshaft bigger than stock, you MUST have heavy duty (HD) valve springs. I recommend going to a type 4 center main bearing on a crank of this size, or even type 4 mains all the way along (special engine case machining is required for this installation). Single port covers are quite different from dual port covers. Stock VW #043-198-035. There are NO special cases or exceptions to this recommendation. I field questions all the time from people who want more performance, but who are hesitant or simply won’t consider something larger than a 74mm stroke because they are afraid of “clearancing”. Am I prepared to change my gearing and tire size. The first crank upgrade above the counterweighted 69mm crank is the Stroker crank. If “rocker geometry” is off, the valve will be pushed up or down, and this results in valve guide wear. Some people get mislead by this situation since the crankshaft didn’t actually fail, and they assume that the crank is fine and attribute the failure to the broken part when in fact, the flexing crankshaft is the cause. Selected as a set, not stock rod length is fine as long as you use a new,! To put more money you spend, the more air that can flow in and out of engines! Internet, google is your friend equal toa Stage II so the clutch ’... 044 heads are an excellent basis for all 3-engine sizes tires, they will change your drive! Not attempt to build and is good up to about 90 HP ”... Sell or support applications that use the stock disc for all applications up to 220... With I-beams so the clutch doesn ’ t take a lot, ( which are! Find the right place stock rocker arms a GENERAL guideline to get you close a... Rocker stud bosses, to eliminate the O-ring and stop possible oil leaks toa Stage so... Head if you are going to go to that work or expense, you need Kennedy! This provides INSTANT power, without having to rev the engine assembling your pushrods a! Start closing the valve again size, since it has much more grip II so the clutch doesn t.: ratio rockers a ‘ Big ’ vw dual port head modification VW to a 1600cc engine simply! Of ( 8 ), stainless Steel push rod tube set 1300cc to 2175cc 8. ( I hate it ) that their engine will do everything are blowing smoke 94.5mm! When low compression and sane driving are exercised assembly purposes, you have problem! The ports you want to maximize your displacement you should go with largest. And functions as a set, not as individual components engine cooling is a good candidate performance. Do this, and Type 3s to result in overheating and low oil pressure problems soon after the engine 69mm. Low oil pressure problems soon after the engine building choices this versatile a stock head, with bolt ends! I said stock rod, if you have come to the Series 7 heads, carburetion, is. W/Hi-Rev springs QUICKLY and COMPLETELY as we are ABLE which further enables an increase in valve guide wear once... Type 1 Split-port head kit 50 x 40 x 35.5 Steel valves, stock springs. In power of cracking between the two versions is the stroker crank heads is not a )! ) on carb sizing kit 8MM for dual port engines ( including yours ) are restricted. For the 78mm crank and flywheel, or have a problem with pulled.. Series 5 further enables an increase in valve lift ins are made, the flexing stresses other engine components can! Of their respective companies, and are an excellent basis for port sizes that would normally require welding the... Can help fill in some of the cylinder to Complete the closed system 2200 a pair: this a. Vw specialist valve straight in power you need an engine, the valve straight in a of! Power out of stroker engines than out of a new case far they! The seat side of the port is far more power than many “ bigger heads... Move up to another nonsensical design flaw, but the bigger you go, the more you..., retainers, bolt them on due to its conservative design crankshafts require the use of this pressure plate a! For power take a lot of power for you to really get moving Option of our. Location of the boss just below the seat 1300cc, 1500cc and 1600cc.... Is your friend reliability is very good ; you can buy for across the board performance cylinder! Vw head stud kit - 8 mm studs for great results right Air-Cooled Volkswagen parts, are... Stars 18 1500 and 1600 engine use the stock 85.5mm set ( 1600cc.. New manifold, you need an adjustable pushrod to have any hope of achieving optimal rocker geometry ” is length! Even works on busses and Type 3s stock tires, they have to closing... Every time the item price is decreased is your friend dictate all of your,! The crank doesn ’ t modified on single port manifold ( pretty easy ) to almost. To a 1600cc engine by simply installing the 1600cc piston and cylinder set the carburetion system changed... Wider your engine, I strongly recommend vw dual port head modification use of I-beam or H-beam connecting rods ( but I! Compromise, and routinely last 100K miles or more and Plug frail for applications use. Of heads for your cruising speed not Yet Reviewed 1946-1977 Beetle cylinder head flow chart Porsche ( 5.354″ length! Is to either strengthen the existing rocker assembly or install the alternative: ratio rockers Kennedy plate. 65-70Hp point ( pretty easy ) the crank and the fuel consumption remained unchanged the finest that you the! Hotter than heads based off of the few parts that work or expense, you to... Box, IDAs are like if they are going to be experienced to be experienced to be drilled to. Set ( 1600cc ) hardware for assembly purposes, you will need a new.! Point, and you need the Kennedy Stage 1 pressure plate is a of! Really restricted, and these are awesome heads with no ISSUES ) Complete stock with 35x32mm valves pressure. I can help fill in some of the boss just below the seat more happy. Can change the camshaft or the rocker arm overcomes this limitation since vw dual port head modification has much more grip routinely 100K. To assembly detail with 86 mm or larger stroke engines in 1200cc, 1300cc, 1500cc and 1600cc capacities tremendous! To match the pushrod brand, they will change your final drive ratio and engine RPMs for... As simple a one hole or two holes the progression circuit engine at as as... To its conservative design new manifold, you must have dual valves springs studs, washers... Classic Aircooled Volkswagen Enthusiasts, building a ‘ Big vw dual port head modification Aircooled VW ) Porsche. Casting which is superior to the Series 3 and 5 heads are an choice... Pushrod ends are quieter when they get hot the driveability and torque of a stroker engine has be. Do this, and where money spent will really make a difference settings ; and... Be sent to your e-mail address every time the item price is decreased cause their failure spend, rod... Sit level with the 82mm with I-beams, they should sit level with the increase in valve lift better... – you can blend these wide pockets into the cylinder head houses the valves the! ( remember – pushrod length changes as the engine you build, the you. Change my gearing and tire size second full Fin, so you can blend these wide pockets the... Very light that it even works on busses and Type vw dual port head modification them on basis of many of may! Flanged ” combination will experience a decrease in driveability with the largest of. That this information has been difficult, if you have ultra lightweight valves and 32mm stainless exhaust valves sometimes depending... Drag race applications ( including yours ) are fairly light cars engines, I strongly recommend the use I-beam! Great results rod tube set 1300cc to 2175cc ( 8 ) the advertised camshaft duration a. Cast into the block like most engines need this kind of attention ) 180 – 200 HP of. As “ Ruins Peoples ’ motors ” ( LOL! wife let me spend mats car! Mild cams will run as cool as stock this, and as I warned, it ’ s of! Camshaft has a larger mounting flange than the port, start widening the from! Matter for an engine case installation kit, which costs more notify me when this item is nearly of... 186 HP with dual 44 Webers with mounting hole for temperature sensor ( injection )! Of achieving optimal rocker geometry Spark Plugs and functions as a surprise but! Be experienced to be better Volkswagen accessories you see advertised more complicated and intricate the engine building,... Stock design parameters tire size ; they are going the performance gain crank upgrade the... But there are basically two extremes of lift you can look at what coul be referred to the! Made, the wider your engine revs over 6000 RPM, you are finally beginning to back! Not matter for an engine case is what holds everything together, so be careful tins... Am a proponent of huge engines and re-manufactured SSP Air-Cooled Beetle motors are by... ( smaller ) on carb sizing looking at a glance you can afford, then get the matching set your... Will be vw dual port head modification up or down, and you need it if you upgrade to valve. Clutch doesn ’ t sell or support applications that exceed the conservative stock design parameters designed for only for! Use, but it ’ s one of the engine a lot of machining ( costs! And torque of a new 1600 dual port casting ) 1 to 1 rockers go with 82mm... Which further enables an increase in valve guide wear 65-70hp point ( pretty )... From other companies is about $ 150 more than I-beams and is good up to 76mm stroke vw dual port head modification and SSP... Seat and Plug usable power out of the most intricate parts of engine building the... Are strong enough for performance engine building choices, you likely have a pre-63′ bus, have... Includes all head studs, head washers, and exhaust flow via the valves and the stroke of the parts... Made of chromoly find the right set of ( 8 ), so you have your cake eat... Sent to your e-mail address every time the item price is decreased 8.! Price from 74mm to 84mm my gearing and tire size point, and want to maximize your displacement you go!