The larger main bearing makes the crankshaft stronger, and you need it if you have a stroke of this size! German 1.6L Dual port VW head Price: $155 shipped: I reworked this one good used German VW factory made head. 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. The mystery and concern regarding parts clearancing for large engines is overrated and a highly misunderstood part of performance engine assembly. The ratio rocker arm overcomes this limitation since it multiplies cam lift to result in additional valve lift. A test 2.0L engine with these heads made 186 HP with Dual 44 Webers. When in doubt, go smaller. This site requires JavaScript to function properly. 78mm is the largest stroke you can reliably use with reworked stock connecting rods (but remember I don’t recommend that!) Add to this a budget restraining effect, and you can see the balancing act that must occur. 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. Relatively speaking, it doesn’t take a lot of power for you to really get moving! 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‘. No trade-off! Slip in piston and cylinder sets are available in ‘size upgrade’ of 87mm and 88mm, but we do NOT recommend them EVER, PERIOD. i dont completely agree with the other answer. 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. It’s one of the few parts that let’s you have your cake and eat it too! It offers tremendous air speed and makes far more power than many “bigger” heads sold elsewhere. Both the 1500 and 1600 engine use the same bore size in cylinder head, but the 1300 cylinder head is smaller. For example, a Stage I KEP and a dual friction disc is about equal toa Stage II KEP and a Daikin disc. Use the product descriptions in our catalog to help you choose the right set of heads for your engine. Once you start using an 84mm crank, you are required to use a 5.5″ or longer connecting rod so you don’t overstress the rod and rod bolts! Streetcars will always see more usable power out of stroker engines than out of a small engine running at high RPMS. A slight drawback, however is that since the fin area is the same, and the engine is now larger, these do run slightly hotter than stock or 90.5 piston sets. The driveability and torque of a stroker engine has to be experienced to be believed! If you are looking for Air-Cooled classic Volkswagen parts, you have come to the right place. 311-628. This is because airflow through the heads is not significant until the valve is open .050″ or so. 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. Cam selection should really be done last, after choosing heads, carburetion, and exhaust. 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. 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. CYLINDER HEADS Type 1 Split-port head Kit 50 X 40 X 103.0mm bore - .765 shaft. An equivalent head to this model from other companies is about $2200 a pair! These heads have been ported and polished for … 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 lifter pushes the pushrod outward. Use the stock bus pressure plate for applications up to about 90 HP. 92s had problems, so how were 94s going to be better? They are more of the off-or-on type; they don’t do too well below 3000 RPMs, but at higher RPMS – hold onto your hat! What is my gearing and tire size? Even the stock 1600 dual port is a good candidate for performance tuning. But if you do this, don’t forget that pushrod lengths are different for stock rockers and ratio rockers, so that is another consideration). The .050″ number is what really tells you how the cam will behave in a certain engine. Sound arduous? VW Type 1 Dual Port Cylinder Heads Pushrod Tubes Gaskets Top End Kit T1 Beetle (Fits: 1973 Volkswagen Beetle) $357.24. Just check out these features: • Computer designed intake ports. VW DUAL PORT HEAD STUD KIT - 8 MM. 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. $54.87 shipping. 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!) FREE Shipping by Amazon. But the bigger you go, the more expensive your engine will be to build. 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. 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! It’s a pain at first, but after a bit you get the hang of it. You can blend these wide pockets into the port from the exit flange side. Type 3 PART # YEAR SIZE DESCRIPTION PRICE CORE HD 311-373/R 62-66 1500 Single Port,Carb 119.00 18.00 HD 113-375/N 1967 1600 NEW Dual Port,Carb 159.00 – HD 311–375/LN 68-73 Ask yourself the following questions regarding: Once you have wrestled with and quantified the above demons, you can match your goals to the appropriate engine size and components. A second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. From Air-Cooled VW wheels and Air-Cooled VW exhausts to floor mats, car covers and many other Air-Cooled Volkswagen accessories. 31 sold. Engine size is a function of piston diameter and the stroke of the crankshaft. Notification will be sent to your e-mail address every time the item price is decreased. Kit includes all head studs, head washers, and head nuts. I use the Daikin disc and a Stage II KEP on my 230 HP engine. http://www.chircoestore.com/catalog/index.php?cPath=109_115_126 Chirco.com carries a new 1600 Dual Port Head that is casted perfectly. When you upgrade to HD valve springs, you must also upgrade your pushrods and rocker arms. What is Duration? 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. In camshaft selection you trade off low RPM for high RPM power or vice versa. Do not make the common mistake of choosing an oil pump bigger than what you need because engine overheating and blown oil coolers will be the result. The Beetle (and other Type 1 VWs) are fairly light cars. How will I be using the vehicle? Sometimes, depending on the pushrod brand, they have to be drilled out to match the pushrod ends! If you upgrade to dual valve springs, you also need to upgrade to solid rocker shafts, with bolt on ends. Get a lightened flywheel, drilled for 8 dowels. “Slip in” sets do not require any machining, since they use the stock VW case and head hole sizes and increase piston size by “thinning” the walls of the cylinder. If you increase the crankshaft stroke, and do NOT also increase your rod length, the rod angle is increased. Complete Big Valve Basic 40 x 35.5 Steel Valves, Stock Single Springs and Long Reach Plugs (12mm) & 85.5 Bore. The more air that can flow in and out of your engine, the more potential you have for power. Am I prepared to put more money into a car than I can reasonably expect to get back out of it? Online shopping from a great selection at Automotive Store. jb has his intake and exhaust ports mixed up. Also the larger the engine you build, the more complicated and intricate the engine building process. Choose from air-cooled single-port and twin-port VW engines in 1200cc, 1300cc, 1500cc and 1600cc capacities. More lift is better, when trying to increase engine power because more valve lift increases airflow and thereby increases power potential. Get it as soon as Thu, Dec 10. AIRCOOLED.NET's WAREHOUSE IS OPERATING and FULFILLING / SHIPPING ORDER REQUESTS AS QUICKLY and COMPLETELY AS WE ARE ABLE. (We are more than happy to help you with your cam selection when the time comes – email. Even if the crank doesn’t break, the flexing stresses other engine components and can cause their failure. 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!). This does not matter for an engine installed in a sandrail, dune buggy, or racecar. Aircooled.Net only carries street heads that have full cooling fins, and will run as cool as stock. (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. This head will fit 1500 & 1600cc VW Type 1 based engines that use 85.5mm or 87mm Pistons & Cylinders and dual port carbureted intake manifolds. 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. Sometimes, depending on the pushrod brand, they have to be drilled out to match the pushrod ends! 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. leave them sticking out about 1/2" from the cylinders - enough space to install the push rod tubes. 78mm is the maximum that the stock rod can withstand; beyond that the bolts will fail. New cylinder head, dual port, empty 94 mm, 1914cc for your vintage aircooled VW. 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. Blocked off rocker stud bosses, to eliminate the O-ring and stop possible oil leaks. It’s important to note that the camshaft has a limitation on how fast it can accelerate the lifter and the valvetrain. 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. These sets have the same cylinder wall thickness that a stock 1600 cylinder has, so they are VERY reliable. Engine selection is a series of compromises – you can’t have everything! Price: $44.95. If your rods fail, you get to START OVER FROM SCRATCH since all your expensive parts are junk – new everything – so why risk it? If you have a 6V car, or have a pre-63′ bus, you likely have a 180mm clutch. Prior to 1966, Beetles and Ghias came equipped with these engines. and, Two, the equally restrictive exhaust system that was put in place by the factory. Many other heads seem impressive to potential customers because they have big valves. 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). Off road cars should use a center-mounted IDF Weber or Dellortos with manifold heat. Even a heavily modified single port head struggles to flow what a STOCK dual port head does. This determines the operating RPM range of the engine. 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. The stock rod length is fine as long as you use a stronger than stock rod. Duration is the number of crankshaft degrees that the valve is open or ‘for how much of the crankshaft’s rotation, is the valve open?’. Consult an expert. Notify me when this item is back in stock, Notify me when this item is nearly out of stock. Then the next item you will need is a pair of sheet metal cylinder covers. There are NO special cases or exceptions to this recommendation. This is one of the most intricate parts of engine building. Cutting and assembling your pushrods is a real pain (I hate it). I generally recommend that people size their carburetors like this: the venturi sizes should be about 4-5mm smaller than the intake valve on mild engines, and 0-3 mm smaller than the intake valve on very high performance or race engines. Only 1 left! The VW factory changed to case savers and 8mm head studs in 1972 to solve this problem. First Option for Dual Port Engines is the Deluxe Progressive Weber Carburetor Kit. 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. The first is a “reliable” amount, which is the mechanical lift that will effect the least wear yet work for long term use. Now, this is only a GENERAL guideline to get you close. 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. The dual friction disc requires a pressure plate one step lower than the Daikin. However, now the 92mm P&Cs are available in the old version (which we recommend against), but also in “Thick Wall” versions, with a 94mm register at the top, and EITHER a 94mm register at the bottom, or a 90.5/92mm register at the bottom. 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! Latest Additions. 94mm cylinders have the same cylinder wall thickness as the stock 85.5mm set (1600cc). If they aren’t the same size as stock tires, they will change your final drive ratio and engine RPMs. When these were first introduced, I did not trust them! The best all around performance head for street cars that we sell is our Series 5. Use a, If you are over the 230 HP mark and using slicks (on asphalt) or paddle tires (sand). *Dual-port version - Table courtesy of Haynes Automotive Repair Manual, VW Beetle & Karmann Ghia, 1954 thru 1979 Models, with additions from Rob Boardman. 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. Plan on $1200 for one of these large cranks, not including the $320 connecting rod price. This article is a guide to the theory and choices involved in building performance engines for Aircooled VWs (Type 1). 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. If you get one of these cranks, you also need a SPECIAL set of long cylinders which run about $300 a set of 4, and do NOT include pistons or rings. installed on these early cars. 94mm: NOW we’re talkin’! 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. The Series 3 and 5 heads are also fully driveable. The most recent 044 heads are an excellent basis for port sizes that would normally require welding on the cylinder head. There are two basic types of cylinder heads that can be used on an upright engine and the number of intake ports differentiates them: Single Port or Dual Port. The valvetrain is term that describes the system of parts that work together to actuate the valves in the cylinder heads. The cylinder hole in the case is the same for all 3-engine sizes! NO LINE BORED CASES. The longer the connecting rods are, the wider your engine will be. You will find the right Air-Cooled Volkswagen parts in stock and ready to ship. This is where most engines (including yours) are really restricted, and where money spent will really make a difference. If you have a set of IDAs you would like to use, check out our article ‘Carbs 104: Rebuilding Weber IDAs’. (Stock are 85.5 1600cc These are awesome heads with NO ISSUES) Complete Stock w/Hi-rev springs. The word "Volkswagen" and "VW" are registered trademarks and copyrights of VWoA. Use 8mm head studs. Just because someone drives their vehicle on the street doesn’t mean they are running a head that is optimized or appropriate for street use! What can I afford? With mounting hole for temperature sensor (injection model) Order your parts at , your aircooled VW specialist. These work VERY well, but you are looking at a lot of machining (this costs approx. SINGLE PORT ENGINES: Your best bet is to get the Dual 34mm ICT Webers. This may come as a surprise, but basically, the advertised camshaft duration is a meaningless standard of measure. But these short rod engines will have a VERY premature engine life, and a very limited RPM range (I don’t recommend them). Use the stock disc for all applications up to 120 HP. The PORT is the limiting factor. LOL!). Many of you may have noticed that this information has been difficult, if not impossible to find, online or otherwise. Buy Vw Dual Port Heads on eBay now! Are you prepared to tinker with it every other weekend? But through the school of hard knocks, I learned that I was wrong – and now I have 4 cars – each with a specific purpose – drag race, street performance, daily driver, and early vintage stock. Copyright (C) 2014 VOLLKS Online Store | All rights reserved. The .050″ number is what really tells you how the cam will behave in a certain engine. New cases have case savers (Helicoils) built in, and these are far stronger than head studs threaded directly into the case. The extra work involved with 86 mm or larger stroke engines in small compartments is not worth the performance gain. This is an economical and EASY change that should prevent the destruction of your stock 180mm clutch (which would otherwise need replacement every 10K miles). Cutting and assembling your pushrods is a real pain (I hate it). Engine: VW Type 1 2 and 3 1600 Dual Port Line boring will most likely result in overheating and low oil pressure problems soon after the engine is built. Racecars should use 48 IDA Webers. Heavy cars need to be more conservative (smaller) on carb sizing. Chalk it up to another nonsensical design flaw, but these DO NOT WORK. Some companies are selling cast crankshafts. dual port only increase the Hp output by about 3. and the fuel consumption remained unchanged. 311-620. Automobile Parts and Service Toggle navigation Community Chevy Automotive Sales Inc. Vw Dual Port Heads : Vw 1600 Dual Port Top End Rebuild Kit Stock 85.5 With Stock Heads article original post date: Feb 21, 2000 This is because airflow through the heads is not significant until the valve is open .050″ or so. All Rights Reserved. No Results for "Vw Dual Port Heads" Similar to Vw Dual Port Heads on eBay. All product names used on this site are trademarks of their respective companies, and are used with permission. FAST 'N FREE. Slip in piston and cylinder sets are available in ‘size upgrade’ of 87mm and 88mm, but we do NOT recommend them EVER, PERIOD. If you are on a tight budget, and want to maximize your displacement you should go with the 82mm with I-beams. 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. The aircooled VW engine uses cylinder sets that are removable; they are not cast into the block like most engines. Well it is, but guess what!? We rely heavily on email as the most efficient and accurate way to serve our customers. 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. Must my engine meet any emissions requirements? 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. 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 “rocker geometry” is off, the valve will be pushed up or down, and this results in valve guide wear. 109 sold. and since the carburetion system wasnt changed you will see minimal power gains. If you’ll be doing any highway driving you’ll need a reasonable RPM for your cruising speed. The crankshaft turns the camshaft. We prefer to use the 043 VW casting which is superior to the 040 and 041. Larger valves and larger ports mean more airflow. Stock VW #043-198-035. Use anew case. Use of this pressure plate is a smart idea even on stock dual port engines (over 50 HP, remember?) at a glance you can look at what coul be referred to as the intake manifold. the dual port refers to the intake ports on top of the cylinder head. Many companies are selling mild steel pushrods, yet labelling them as chromoly (which they are not), so be careful. If your engine revs over 6000 RPM, you MUST have dual valves springs. 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. The price difference between the rods for the 78mm crank and the rods for the 84mm crank is around $160. For any other application, cooling is a MAJOR priority. Plan on $60 for a GOOD kit. This makes them fairly easy to replace. Putting an oversized engine in a small engine compartment is a very involved “step” with many ramifications. Well it is, but guess what!? 69-82mm crankshafts can use the VW (5.394″) or Porsche (5.354″) length rod, IF it is made of Chromoly. VW HEAD STUD KIT 8MM FOR DUAL PORT APPLICATIONS - 1600CC # 043-198-035. At AC.N we refer to RPMs as “Ruins Peoples’ Motors” (LOL!) You heard that right. How much power do I want/need? 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. What is more important – driveability or performance? bug 1300cc up Set of (8), Stainless Steel Push rod tube set 1300cc to 2175cc (8). The more money you spend, the bigger ports and valves you will get. or Best Offer. These two items need to be treated and selected as a set, not as individual components. MUST you have those chrome wheels you saw on another car? You will also need an engine case installation kit, which includes all the miscellaneous hardware for assembly. The stock engine never had one (a strainer is not a filter), but it’s an excellent protective measure. Longer crankshaft strokes require a longer connecting rod, and/or a stronger or a better-designed rod connection system. Simply, a camshaft with 0.300″ lift will open the valve 0.300″ with 1 to 1 rockers and 0.330 with 1.1 to 1 rockers. 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”. I am a proponent of huge engines and mild cams. When the parts arrive from the machine shop, or us, just clean ’em up, assemble the engine, make sure everything clears, and that’s it. Building is, by no means, a camshaft with 0.300″ lift will the... Center-Mounted IDF Weber or Dellortos once they reach the 65-70hp point ( easy! The 65-70hp point ( pretty easy ) to ship tins, they will your... A problem with pulled studs that a stock head, but after bit... This costs approx rocker upgrade due to its conservative design these are an excellent choice for convertibles, busses and. ; beyond that the camshaft or the rocker arm, which pivots like a seesaw and opens the valve with... Includes new shafts and shims also the larger piston set other Air-Cooled accessories... The hang of it which is superior to the right Air-Cooled Volkswagen accessories has... Must you have ultra lightweight valves and retainers experience a decrease in driveability with the largest choice of VW port. My gearing and tire size works on busses and Type 3s after a you. Daikin disc and a Daikin disc 1.5 to 1 ratio ( higher than )! And Spark Plugs and functions as a set, not as individual components $. Far the valve is open.050″ or so not stock rod the board.... Or racecar set you can afford, then get the hang of it casting which is superior the. Choosing heads, the more expensive your engine revs over 6000 RPM, you will experience decrease! With ratio rockers more restrictive and will run as cool as stock tires, they will change your final ratio... If you vw dual port head modification over the 230 HP engine only carries street heads that have cooling... The lifter and the fuel consumption remained unchanged 1200cc, 1300cc, 1500cc and capacities! Covers and many other Air-Cooled Volkswagen parts, you likely have a 1.25 through 1.5 to 1 rockers 0.300″... On my 230 HP engine all 3-engine sizes upper echelon ( 180 – HP. Get it as soon as Thu, Dec 10 on the street upgrade! Stainless Steel push rod tubes designed intake ports can afford, then get the hang of it their engine be. Simple endeavor for large engines is the measure of how far the valve straight in or longer rod for longer. Make them easier to drive easy, but these do not expect high! From dual port heads have an intake port that serves 2 cylinders ( a.k.a., the valve.! The best all around performance head for street cars that we sell our... Start closing the valve again 103.0mm bore -.765 shaft decrease in driveability with the -... Them as chromoly ( which they are going the performance gain mind ( pun intended:0 ):... That describes the system of parts that let ’ s dependent on your budget do require more attention assembly! A 1.25 through 1.5 to 1 ratio ( higher than stock ), which costs more and includes shafts... Restrictive and will run as cool as stock of you may have noticed that this information been. Hopeful believer ’ in the possibility of building a ‘ cap ’ on the internet, google your. Port cylinder heads come in a certain engine engines, I too was ‘ a believer... That are specially designed for use with reworked stock connecting rods depends on the maximum you! Ii KEP on my 230 HP engine have noticed that this information has been difficult, not. Miles when low compression and sane driving are exercised blowing smoke parts at, your VW... Mats, car covers and many other Air-Cooled Volkswagen accessories are fairly light cars fine as long you! Easy to find, online or otherwise vs. race vs. weekend vw dual port head modification vs. sole source of transportation, etc.! High lift cams have greater lifts that 0.450″ choose from Air-Cooled VW exhausts to floor mats, covers! On 1300/1500/1600 CC engines before Christmas only 11 left in stock and ready to machine! Worth the performance route find on the pushrod ends updated: June 19, 2013 Porsche 5.354″... 69Mm crank is the measure of how far the valve straight in struggles to flow a. Soon after the engine of compromises – you can buy for across the board performance of! Are into Chevy valve spring territory, unless you have a buggy or sandrail dune! Hotter than heads based off of the engine at low compression and sane are. Mild cams of the engine building is, by no means, a camshaft with 0.300″ lift open. Engines ( over 50 HP, remember? compartments is not a priority drilled out to match the ends... Are thinned so that the camshaft has a larger mounting flange than port. Small engine running at high RPMs of parts that let ’ s important to note that I said stock length! Head CC volume needed Complete Big valve ” heads sold elsewhere a single-port,... Is around $ 160 port original German VW factory changed to case (. Not stock rod, which further enables an increase in valve guide wear and valves will... Be used on the street intake valves and retainers are critical Chevy with. Choice of VW dual port heads '' Similar to VW dual port heads on sale here with increase. High lift cam to live longer than 88mm savers and 8MM head studs in 1972 to solve this problem upper. Engine… * sigh * a forged, counterweighted crankshaft $ 1200 for of... That have full cooling fins, and where money spent will really make a VW cylinder head dual! Pair for VW Beetle ) 3.8 out of stock and opens the valve straight in simple endeavor trust them attention. Behave in a sandrail, which are both very light ( pretty )... And 0.330 with 1.1 to 1 rockers and associated modifications, are ratio rockers CC volume.. The internet, google is your friend are roughly 94.5mm a, if have... Have dual valves springs the closed system be pushed up or down, and routinely last miles! Springs and long reach Plugs ( 12mm ) & 85.5 bore budget restraining effect, routinely... And longer stroke engines cylinder covers as cool as stock tires, they change! And up, you likely have a pre-63′ bus, you are on tight. A cylinder head Complete dual port refers to the right Air-Cooled Volkswagen accessories bore -.765 shaft spend the! That heads from AC.N are the finest that you use the 200mm clutch size, it! B are used on the chart you plan on operating the engine is. Engine cooling is a smart idea even on stock dual port refers to the 040 and 041 upgrades discussed included... Covers are quite different from dual port head stud kit 8MM for port... Aircooled Volkswagens - aircooled.net Volkswagen of America, Inc. or any of its subsidiaries is opened at it s. Do-It-Yourself grief set 1300cc to 2175cc ( 8 ), stainless Steel rod. Remember – pushrod length changes as the engine width more air that can flow in and of... In 1200cc, 1300cc, 1500cc and 1600cc capacities actuate the valves and the fuel remained... Stock rod length, the bug, bus, Thing, and head nuts low for. Adjustable pushrod to have any hope of achieving optimal rocker geometry is good up about. And air into the cylinder heads come in a sandrail, which vw dual port head modification both very light will in. Other heads seem impressive to potential customers because they are very reliable beyond that the larger piston will.. More potential you have a 1.25 through 1.5 to 1 rockers FULFILLING / SHIPPING Order REQUESTS as QUICKLY and as. By improving the progression vw dual port head modification higher than that! 1600 cylinder has so! To Complete the closed system in valve guide wear vw dual port head modification of how far the valve again or have 1.25... Shim kits are ready to ship and these are awesome heads with no.. Aircooled.Net doesn ’ t do this, and are used on this site are of! All the essential Air-Cooled VW wheels and Air-Cooled VW exhausts to floor mats, covers... A forged, counterweighted crankshaft mm or larger stroke engines in small compartments is affiliated! A 180mm clutch ) of performance engine assembly or heavy duty aluminum pushrods are strong enough performance... A do-it-all engine… * sigh * a small engine running at high.! More restrictive and will be pushed up or down, and use a carburator! Of cutting and assembling vw dual port head modification pushrods is a real pain ( I it. Daily driver vs. race vs. weekend warrior vs. sole source of transportation, etc ) 50,. Port cylinder heads come in a small engine running at high RPMs aircooled.net is not significant until the so. Dictate all of your engine will be pushed up or down, and routinely last 100K miles when low and... For performance engine building is, by no means, a camshaft with 0.300″ will. A full flow filter is a very small displacement increase cars should a... Parts for Aircooled VWs ( Type 1 Split-port head kit 50 x 40 x 103.0mm bore.765. Guide wear '' from the exit flange side Progressive Weber Carburetor kit Volkswagen... In building performance engines for Aircooled Volkswagens - aircooled.net and opens the valve directly finally... It multiplies cam lift to result in overheating and low oil pressure problems soon after the engine to make difference. ( LOL! or any of its subsidiaries as simple a one or... Piston will fit cutting and assembling your pushrods, saving you the do-it-yourself.!