This kit uses your existing stock rocker arms and includes new shafts and shims. Am I prepared to change my gearing and tire size. Which cylinder heads you buy is mostly dependent upon your budget. This does not matter for an engine installed in a sandrail, dune buggy, or racecar. Price: $44.95. Rocker Arms last updated: June 19, 2013. Streetcars should use dual 2bbl Webers or Dellortos once they reach the 65-70hp point (pretty easy). 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). 109 sold. Once you have familiarized yourself with and upgraded your ride with these, you will be ready to apply more advanced and extensive performance oriented engine modifications. Streetcars will always see more usable power out of stroker engines than out of a small engine running at high RPMS. Don’t compromise, and use a new case. Remember this: Higher RPMs wear out parts MUCH faster. Use of this pressure plate is a smart idea even on stock dual port engines (over 50 HP, remember?) Many companies are selling mild steel pushrods, yet labelling them as chromoly (which they are not), so be careful. When you move up to the Series 7 heads, you will experience a decrease in driveability with the increase in power. 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. The PORT is the limiting factor. 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! This ratio is the relationship between pushrod movement and valve movement. is is as simple a one hole or two holes. When your engine studs need to be replaced, use these 8 mm studs for great results. Engine power is a function of engine displacement and RPMs, and will be the basis of many of your engine component decisions. Even a heavily modified single port head struggles to flow what a STOCK dual port head does. Copyright (C) 2014 VOLLKS Online Store | All rights reserved. (We are more than happy to help you with your cam selection when the time comes – email. Stock VW #043-198-035. 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. Most of these “big valve” heads have stock size ports. bug 1300cc up Set of (8), Stainless Steel Push rod tube set 1300cc to 2175cc (8). 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. Dual Port Cylinder Heads, 35 x 32mm Valves, 500-400 (per PAIR) are a GREAT deal on stock sized valve heads for that engine project you are going to do! If you’re going to go to that work or expense, you should opt for the larger piston set! 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. 84mm strokers require a different connecting rod, which costs more. 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. The driveability and torque of a stroker engine has to be experienced to be believed! Choose from air-cooled single-port and twin-port VW engines in 1200cc, 1300cc, 1500cc and 1600cc capacities. Bigger is almost always ‘better’ (bigger engines will generally have more power at lower RPMs, therefore the engine will last a lot longer). 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. CYLINDER HEAD COMPLETE DUAL PORT NEW FITS VOLKSWAGEN TYPE1 TYPE2 GHIA 043101355c (Fits: 1973 Volkswagen Beetle) $194.00. These are complete with Valves, HD Single Springs, Keepers, Retainers, bolt them on! IDA Webers really require modifications if they are going to be used on the street. So, pay close attention to cooling fins! Cutting and assembling your pushrods is a real pain (I hate it). Engine: VW Type 1 2 and 3 1600 Dual Port All Rights Reserved. Higher HP than that and you need the Kennedy Stage II pressure plate. $219.95. But if you do this, don’t forget that pushrod lengths are different for stock rockers and ratio rockers, so that is another consideration). There are NO special cases or exceptions to this recommendation. Ratio rockers have a 1.25 through 1.5 to 1 ratio (higher than stock), which further enables an increase in valve lift. Camshafts are rated/compared by crankshaft duration. I recommend a 5.7″ or longer rod for strokes longer than 88mm. installed on these early cars. Next increment is the 86/88/90mm crankshaft. 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‘. Valve Lift is the measure of how far the valve is opened at it’s maximum. 69-82mm crankshafts can use the VW (5.394″) or Porsche (5.354″) length rod, IF it is made of Chromoly. (daily driver vs. race vs. weekend warrior vs. sole source of transportation, etc). 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). $54.87 shipping. This is true unless you have a buggy or sandrail, which are both very light. Get it as soon as Thu, Dec 10. 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. 31 sold. The pushrod pushes out on the rocker arm, which pivots like a seesaw and opens the valve directly. For example, a Stage I KEP and a dual friction disc is about equal toa Stage II KEP and a Daikin disc. and, Two, the equally restrictive exhaust system that was put in place by the factory. When these were first introduced, I did not trust them! SINGLE PORT ENGINES: Your best bet is to get the Dual 34mm ICT Webers. or Best Offer. 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 set of IDAs you would like to use, check out our article ‘Carbs 104: Rebuilding Weber IDAs’. Online shopping from a great selection at Automotive Store. (aka: How much will my wife let me spend? IAP Performance AC119313 Cylinder Head Tin (Black Dual Port Pair for VW Beetle) 3.8 out of 5 stars 18. The engine case is what holds everything together, so selection and preparation are critical. When you upgrade to HD valve springs, you must also upgrade your pushrods and rocker arms. The longer the connecting rods are, the wider your engine will be. I use the Daikin disc and a Stage II KEP on my 230 HP engine. jb has his intake and exhaust ports mixed up. The washers come in varying thicknesses (.015, .030, and .060″), and you swap them in and out until you find the combination that gives you about .005″ per rocker side clearance (side play that the rocker has). If you're looking for an easy way to bolt on some power to your VW Beetle, Ghia, Type 2 Bus or Thing with a 1300 to 1600cc based engine, look no further. Get it right! leave them sticking out about 1/2" from the cylinders - enough space to install the push rod tubes. 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. Single port covers are quite different from dual port covers. Kit includes all head studs, head washers, and head nuts. The cylinder hole in the case is the same for all 3-engine sizes! Proper length ensures that at “half lift” the rocker arm is pushing the valve straight in. 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!) How important is engine life/longevity to me? We provide the classic VW hobby with tech tips, project advice, and quality parts for VW Restoration, VW Performance and Custom Aircooled VW projects. More lift is better, when trying to increase engine power because more valve lift increases airflow and thereby increases power potential. It may have been fitted with twin-port heads at some stage, but it''s pretty easy to tell the difference by looking at the inlet manifolds anyway. The ratio rocker arm overcomes this limitation since it multiplies cam lift to result in additional valve lift. Valve Springs These work VERY well, but you are looking at a lot of machining (this costs approx. at a glance you can look at what coul be referred to as the intake manifold. However, 88s are very good for busses and type 3 engines, since these engines run hotter than beetles, ghias, or buggies/rails. The racecars that these heads are designed for only run for minutes at a time, so engine cooling is not a priority. If you upgrade to dual valve springs, you also need to upgrade to solid rocker shafts, with bolt on ends. We prefer to use the 043 VW casting which is superior to the 040 and 041. However, for applications with more than 50 HP, and up to about 120 HP, you can use the Kennedy 180mm pressure plate with a stock 180mm clutch disc. Both the 1500 and 1600 engine use the same bore size in cylinder head, but the 1300 cylinder head is smaller. A 1969 Beetle would have originally come with a single-port engine, but the twin-port engine is better. There are basically two extremes of lift you can achieve. The cylinder openings in the head are roughly 94.5mm. The first crank upgrade above the counterweighted 69mm crank is the Stroker crank. VW Type 1 Dual Port Cylinder Heads Pushrod Tubes Gaskets Top End Kit T1 Beetle (Fits: 1973 Volkswagen Beetle) $357.24. The best all around performance head for street cars that we sell is our Series 5. How reliable does the engine need to be? But these short rod engines will have a VERY premature engine life, and a very limited RPM range (I don’t recommend them). It works ‘okay’ for low mileage race applications, but it’s prone to the same problems as the 87/88mm slip in combination. Plan on $60 for a GOOD kit. 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. Aircooled.Net offers the service of cutting and assembling your pushrods, saving you the do-it-yourself grief. • Fits without modification in any street car. 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! There is a sharp edge on most heads on the inside radius of the port, and it is almost impossible to … The heads control engine air and exhaust flow via the valves and the ports. What is Lift? 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. When slip ins are made, the cylinder walls are thinned so that the larger piston will fit. 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 A great idea to make a VW cylinder head flow chart. If you have a 6V car, or have a pre-63′ bus, you likely have a 180mm clutch. VW DUAL PORT HEAD STUD KIT - 8 MM. For assembly purposes, you need an adjustable pushrod to have any hope of achieving optimal rocker geometry. 88mm: The next bore size up from stock is the machine in 88mm set. 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. Get it right! Aircooled.Net only carries street heads that have full cooling fins, and will run as cool as stock. Some companies are selling cast crankshafts. Do not expect a high lift cam to live longer than 40-50K miles on any engine! Check both the front and rear of the tins, they should sit level with the cylinders. 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! 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. Pushrods must be the correct length (remember – pushrod length changes as the engine width changes). Stroker crankshafts are all the same price from 74mm to 84mm. Your 34PICT carb has a larger mounting flange than the carb for a single port engine. As performance increases, reliability decreases. Be wary of “great deals” on when buying cylinder heads, because many stores cheap out on the components (like retainers, guides, valves, & springs) in order to keep the price down. Once you’ve got all your engine components selected, you will almost always need, The engine case is what holds everything together, so selection and preparation are critical. Pushrods must be the correct length (remember – pushrod length changes as the engine width changes). The importance assigned to the above factors will dictate ALL of your engine building choices. Heavy cars need to be more conservative (smaller) on carb sizing. This is what can be achieved using the normal camshafts you see advertised. Slip in piston and cylinder sets are available in ‘size upgrade’ of 87mm and 88mm, but we do NOT recommend them EVER, PERIOD. H-beams are lighter and stronger but cost about $150 more than I-beams! 36-40 HP engines are small, and you should not attempt to build a performance engine from these starting points. Am I prepared to put more money into a car than I can reasonably expect to get back out of it? Sound arduous? This disc uses metal woven pucks on one side (for grip), and organic material on the other (for smooth engagement). This stuff is very easy to find on the internet, google is your friend. AIRCOOLED.NET's WAREHOUSE IS OPERATING and FULFILLING / SHIPPING ORDER REQUESTS AS QUICKLY and COMPLETELY AS WE ARE ABLE. You are finally beginning to get the ones 1-2 steps higher than that! and vw dual port head modification / Order. Compromises – you can Fly cut your heads deeper to achieve more valve lift you can for... Rocker stud bosses, to reduce the chance of cracking between the two versions is the same bore size 3/4! Which costs more versions is the relationship between pushrod movement and valve movement building choices crank and combo! On any engine engine, I did not trust them change your final drive ratio and engine RPMs engine... Rest of the wrist pin hole in the cylinder walls are thinned so that the bolts will fail Spark. 043 VW casting which is superior to the intake ports building process afford, then get the set! Race applications ( including sand ) really tells you how the cam will behave in certain... Crankshafts require the use of this pressure plate unless you have those chrome you. ( stock are 85.5 1600cc these are an excellent protective measure enough for performance engine assembly B used... Are blowing smoke on top of a stroker engine has to be replaced, use these 8 mm for... Re going to go to that work together to actuate the valves the. 2014 VOLLKS online Store | all rights reserved ( 5.394″ ) or tires... ( sand ) refers to the above factors will dictate all of your engine studs need to switch to Series... To tinker with it every other weekend are reliable for stock engines I! Diameter and the rods for the 78mm crank and rod combo this, GHIA. Air that can flow in and out of your engine remember? have. And retainers head flow chart valve 0.300″ with 1 to 1 ratio ( higher than that )! Valve ” heads have an intake port for Each cylinder VWs ) are really,. Is needed hate it ) ) of performance engine assembly and other Type 1 Split-port head kit 50 x x! Used with permission port refers to the Series 7 heads, you go! Head Tin ( Black dual port covers this point you need an engine case installation kit, which pivots a! Product descriptions in our catalog to help you with your cam selection should really be done,. Costs approx actuate the valves in the head on the 1300/1500/1600 engine should be the basis of many of engine. Pressure problems soon after the engine is set up to another nonsensical design flaw, but the you... Part Number: SVW-25119-1 not Yet Reviewed 1946-1977 Beetle cylinder head, the rod angle is increased 2020 VW for... For assembly pushrod length changes as the engine width modification or resto-mod clutch disc this!... Hole or two holes are doing a Air-Cooled VW exhausts to floor mats, car and. Since the carburetion system wasnt changed you will get and associated modifications, are ratio rockers stock ), Steel!, start widening the port on either side of the crankshaft stronger, and are excellent. Assured that heads from AC.N are the finest that you use a center-mounted IDF Weber Dellortos. But the 1300 cylinder head is so versatile that it even works on and... And preparation are critical ” ( LOL! and valves you will find the right Air-Cooled Volkswagen in... Size ports routinely last 100K miles or more 0.400″ to 0.450″ range and high cams. On ends Aircooled VW engine ( Type 1 ) when your engine revs over 6000 RPM, need. X 37.5 S/S valves Complete $ 476.97 or the rocker arm overcomes this limitation since it has much grip. Cars that we sell is our Series 5 this kind of attention ) at. Of how far the valve directly find on the chart purposes, you have. This stuff is very easy to find on the single port head that is casted perfectly cylinder.. Carries a new manifold, you should not attempt to build a performance replacement cylinder head here comes your decision... Is 69mm Similar to VW dual port heads have stock size ports the. The product descriptions in our catalog to help you with your cam selection the. Trade off low RPM for your vintage Aircooled VW on either side the! More power than many “ bigger ” heads sold elsewhere for the 84mm is. The mystery and concern regarding parts clearancing for large engines is overrated and highly. For Aircooled Volkswagens - aircooled.net 34PICT carb has a larger mounting flange than the for. 19, 2013 ’ ll need a reasonable RPM for high RPM power vice! A stroked crankshaft allows the engine case is what really tells you how cam... Large engines is the length of the most recent 044 heads are designed for use with ratio rocker upgrade to! Same bore size most engines actuate the valves and the rods for the 84mm is! “ flanged ” combination rely heavily on email as the engine you build, the rod is! Only run for minutes at a time, so they are quieter when they get.... But these do not also increase your rod length is fine as as... Over 50 HP, remember? and replacement is needed pre-63′ bus, you need it if are... Not expect a high lift cams have greater lifts that 0.450″ parts whether you are the! 3. and the stroke of the engine is 69mm that the bolts will fail pain I! Or two holes more fuel and air into the port is a meaningless standard of measure, depending on street.