vw dual port head modification

Use anew case. The first crank upgrade above the counterweighted 69mm crank is the Stroker crank. Highway or city driving – or both? You’ll be able to drive easily if you get stuck in traffic, or want to take a nice drive out with your mom or a date. Cutting and assembling your pushrods is a real pain (I hate it). 86 mm and longer strokes, however, do require more attention to assembly detail. These work VERY well, but you are looking at a lot of machining (this costs approx. ENGLISH This stuff is very easy to find on the internet, google is your friend. Stock VW rocker arms are reliable for stock use, but are frail for applications that exceed the conservative stock design parameters. 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. Ratio rocker kits are ready to “bolt on” with all the upgrades discussed above included. With mounting hole for temperature sensor (injection model) Order your parts at , your aircooled VW specialist. These heads are more difficult to drive easy, but are the leader in horsepower. From 120 HP and up, you have the option of using our dual friction clutch disc. 84mm strokers require a different connecting rod, which costs more. The people who claim that their engine will do everything are blowing smoke. A pistons are used on up to 76mm stroke engines and B are used on 78 and longer stroke engines. Single port covers are quite different from dual port covers. The 1300/1500/1600 engine should be the basis for all performance modifications. 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. 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. Well it is, but guess what!? MUST you have those chrome wheels you saw on another car? © 2020 VW Parts for Aircooled Volkswagens - Aircooled.Net. 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. Cam selection should really be done last, after choosing heads, carburetion, and exhaust. Use 8mm head studs. These modifications make them easier to drive by improving the progression circuit. SINGLE PORT ENGINES: Your best bet is to get the Dual 34mm ICT Webers. “Machine in” sets require engine case and cylinder head machining before they can be used, since they are significantly larger than the original sets. We prefer the aluminum pushrod solution because they are quieter when they get hot. last updated: June 19, 2013. This is what can be achieved using the normal camshafts you see advertised. All product names used on this site are trademarks of their respective companies, and are used with permission. (Stock are 85.5 1600cc These are awesome heads with NO ISSUES) Complete Stock w/Hi-rev springs. This site requires JavaScript to function properly. 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?’. It works ‘okay’ for low mileage race applications, but it’s prone to the same problems as the 87/88mm slip in combination. 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. Line boring will most likely result in overheating and low oil pressure problems soon after the engine is built. Remember this: Higher RPMs wear out parts MUCH faster. For stock engines, I strongly recommend the use of the dual port head if you are going the performance route. On top of a new manifold, you will need a new carburator. In camshaft selection you trade off low RPM for high RPM power or vice versa. If they aren’t the same size as stock tires, they will change your final drive ratio and engine RPMs. Don’t compromise, and use a new case. Latest Additions. 77mm, 83mm, 85.5 mm: Stock VW engines (aircooled type 1 1300/1500/1600 cc) came stock with these piston sizes, respectively. Just check out these features: • Computer designed intake ports. It offers tremendous air speed and makes far more power than many “bigger” heads sold elsewhere. New cylinder head, dual port, empty 94 mm, 1914cc for your vintage aircooled VW. This is because airflow through the heads is not significant until the valve is open .050″ or so. Find Vw Dual Port Heads on sale here with the largest choice of Vw Dual Port Heads anywhere online. I am a proponent of huge engines and mild cams. For example, a Stage I KEP and a dual friction disc is about equal toa Stage II KEP and a Daikin disc. 78mm is the largest stroke you can reliably use with reworked stock connecting rods (but remember I don’t recommend that!) Reliability is very good; you can expect about 50K miles before a tear down and replacement is needed. 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. 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. Online shopping from a great selection at Automotive Store. Sometimes, depending on the pushrod brand, they have to be drilled out to match the pushrod ends! It’s one of the few parts that let’s you have your cake and eat it too! The more money you spend, the bigger ports and valves you will get. If you’re going to go to that work or expense, you should opt for the larger piston set! $34.28 $ 34. ‘. 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. 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. FAST 'N FREE. The lifter pushes the pushrod outward. Which cylinder heads you buy is mostly dependent upon your budget. Prior to 1966, Beetles and Ghias came equipped with these engines. This means that a 1500cc engine can be upgraded to a 1600cc engine by simply installing the 1600cc piston and cylinder set! Copyright (C) 2014 VOLLKS Online Store | All rights reserved. Next increment is the 86/88/90mm crankshaft. These heads have been ported and polished for … Check both the front and rear of the tins, they should sit level with the cylinders. Don’t get me wrong though, a dual port head can easily last over 100K miles without cracking, if the engine isn’t abused. Obviously on Single Port heads, the shared intake port is more restrictive and will limit power potential. jb has his intake and exhaust ports mixed up. 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. A test 2.0L engine with these heads made 186 HP with Dual 44 Webers. I never recommend reusing or rebuilding old rods. You’ll also need an oil pump, which is an easy item to choose – if the car is turbo charged, you need a 30mm pump, if not, then you need a 26mm pump. 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. 311-628. Pushrods 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. LOL!). The solution is to either strengthen the existing rocker assembly or install the alternative: Ratio Rockers. 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! 1946-1977 Beetle Cylinder Head 94mm Dual Port 44 x 37.5 S/S Valves Each $476.97. Engine: VW Type 1 2 and 3 1600 Dual Port 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. Notification will be sent to your e-mail address every time the item price is decreased. Please only contact us by PHONE if you are unable to email for some reason, or if your situation (or tech question) is impossible to convey in writing. 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 means they can only open the valve so far before they have to start closing the valve again. “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. You heard that right. These two items need to be treated and selected as a set, not as individual components. 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. You can blend these wide pockets into the port from the exit flange side. The first consideration is that you MUST have a forged, counterweighted crankshaft. On a stock head, the valve is ALREADY capable of 40% more flow than the port allows. The Series 3 and 5 heads are also fully driveable. 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‘. The machining for 94s costs slightly more than 90.5s — in addition to “boring”, you must have the case “decked”, so they do cost a little more to build (even though the piston set is about the same price as the 90.5mm). (We are more than happy to help you with your cam selection when the time comes – email vwtech@aircooled.net with engine specs and compression). Engine power is a function of engine displacement and RPMs, and will be the basis of many of your engine component decisions. Be sure to get the matching set for your crank and rod combo. The staff here at Headflow Masters continuously attempts to provide you with the most accurate information found on this site, but mistakes may arise. Valve Springs New cases have case savers (Helicoils) built in, and these are far stronger than head studs threaded directly into the case. 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). Well, the jury is in and 94s work. The decision between I-beam or H-beam connecting rods depends on the maximum RPM you plan on operating the engine at. When your engine studs need to be replaced, use these 8 mm studs for great results. 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. 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. How will I be using the vehicle? Add to this a budget restraining effect, and you can see the balancing act that must occur. FREE Shipping by Amazon. This does require case machining, and plugging the oil pump, along with some oil line plumbing to the filter and back to the case. The alternative to stock rockers and associated modifications, are ratio rockers. 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. What is more important – driveability or performance? 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. 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. Replace them with solid washers. Proper length ensures that at “half lift” the rocker arm is pushing the valve straight in. This may come as a surprise, but basically, the advertised camshaft duration is a meaningless standard of measure. Pushrods must be the correct length (remember – pushrod length changes as the engine width changes). article original post date: Feb 21, 2000 From Air-Cooled VW wheels and Air-Cooled VW exhausts to floor mats, car covers and many other Air-Cooled Volkswagen accessories. If it is over 7500 RPM, you are into Chevy valve spring territory, unless you have ultra lightweight valves and retainers. Slip in piston and cylinder sets are available in ‘size upgrade’ of 87mm and 88mm, but we do NOT recommend them EVER, PERIOD. We prefer to use the 043 VW casting which is superior to the 040 and 041. The price difference between the rods for the 78mm crank and the rods for the 84mm crank is around $160. Also the larger the engine you build, the more complicated and intricate the engine building process. The 040 Super Street head is a performance replacement cylinder head with 37.5mm stainless intake valves and 32mm stainless exhaust valves. 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. Use of this pressure plate is a smart idea even on stock dual port engines (over 50 HP, remember?) (the upper echelon (180 – 200 HP) of performance VW engines typically need this kind of attention). I use the Daikin disc and a Stage II KEP on my 230 HP engine. However, 88s are very good for busses and type 3 engines, since these engines run hotter than beetles, ghias, or buggies/rails. The importance assigned to the above factors will dictate ALL of your engine building choices. 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. 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‘. Sound arduous? IDA Webers really require modifications if they are going to be used on the street. 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. Long reach 3/4 Inch Spark Plugs, to reduce the chance of cracking between the Valve seat and Plug. 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. The crankshaft turns the camshaft. (Two examples that spring to mind (pun intended :0) are: pounded out cases and popped out wrist pin clips). 90.5mm: This is a very common bore size. VW HEAD STUD KIT 8MM FOR DUAL PORT APPLICATIONS - 1600CC # 043-198-035. If your engine revs over 6000 RPM, you MUST have dual valves springs. VW Type 1 Dual Port Cylinder Heads Pushrod Tubes Gaskets Top End Kit T1 Beetle (Fits: 1973 Volkswagen Beetle) $357.24. Light cars can be more radical. Must my engine meet any emissions requirements? The more air that can flow in and out of your engine, the more potential you have for power. 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. 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. When you stroke an engine, I feel there is no point in using a crankshaft smaller than 78mm. CYLINDER HEADS Type 1 Split-port head Kit 50 X 40 X 103.0mm bore - .765 shaft. 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 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. You will find the right Air-Cooled Volkswagen parts in stock and ready to ship. As performance increases, reliability decreases. For 1600CC Engines. When it comes to performance engines, in general, “Jack of all trades – master of none” is the axiom that applies. Do not expect a high lift cam to live longer than 40-50K miles on any engine! 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. 82mm crankshafts require the use of I-beam or H-beam connecting rods. AIRCOOLED.NET's WAREHOUSE IS OPERATING and FULFILLING / SHIPPING ORDER REQUESTS AS QUICKLY and COMPLETELY AS WE ARE ABLE. The Fisher book on "How to Hot Rod the VW" lists the head flow numbers for single port and dual port 1600 VW heads but does not have the test pressures. You get what you pay for: Buying cheaper priced (low quality) parts 2 or more times is more expensive than buying the more expensive part once, especially when a broken part takes a bunch more parts with it on the way out! Rest assured that heads from AC.N are the finest that you can buy for across the board performance. Buy Vw Dual Port Heads on eBay now! 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). Am I prepared to put more money into a car than I can reasonably expect to get back out of it? But if you do this, don’t forget that pushrod lengths are different for stock rockers and ratio rockers, so that is another consideration). If you increase the crankshaft stroke, and do NOT also increase your rod length, the rod angle is increased. There is a sharp edge on most heads on the inside radius of the port, and it is almost impossible to … 77mm, 83mm, 85.5 mm: Stock VW engines (aircooled type 1 1300/1500/1600 cc) came stock with these piston sizes, respectively. I use the Daikin disc and a Stage II KEP on my 230 HP engine. No trade-off! Engine selection is a series of compromises – you can’t have everything! Many years ago, I too was ‘a hopeful believer’ in the possibility of building a do-it-all engine…*sigh*. The VW factory changed to case savers and 8mm head studs in 1972 to solve this problem. Overheating and loss of power are the result. • Fits without modification in any street car. A perfect example of pure marketing hype. at a glance you can look at what coul be referred to as the intake manifold. Now, this is only a GENERAL guideline to get you close. is is as simple a one hole or two holes. Sometimes, depending on the pushrod brand, they have to be drilled out to match the pushrod ends! i dont completely agree with the other answer. 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). The most recent 044 heads are an excellent basis for port sizes that would normally require welding on the cylinder head. Aircooled.Net is not affiliated with Volkswagen AG or Volkswagen of America, Inc. or any of its subsidiaries. The driveability and torque of a stroker engine has to be experienced to be believed! The PORT is the limiting factor. If your rods fail, you get to START OVER FROM SCRATCH since all your expensive parts are junk – new everything – so why risk it? It’s important to note that the camshaft has a limitation on how fast it can accelerate the lifter and the valvetrain. 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. (We are more than happy to help you with your cam selection when the time comes – email. Stock VW #043-198-035. Another thing to consider when you increase connecting rod length is that the longer the connecting rod, the further out from the crankshaft the piston is, and could potentially stick out the end of the cylinder. Are you prepared to tinker with it every other weekend? An equivalent head to this model from other companies is about $2200 a pair! At AC.N we refer to RPMs as “Ruins Peoples’ Motors” (LOL!) Here comes your first decision point, and as I warned, it’s dependent on your budget and goals. This is where most engines (including yours) are really restricted, and where money spent will really make a difference. Even a heavily modified single port head struggles to flow what a STOCK dual port head does. Part Number: SVW-25119-1 Not Yet Reviewed *Dual-port version - Table courtesy of Haynes Automotive Repair Manual, VW Beetle & Karmann Ghia, 1954 thru 1979 Models, with additions from Rob Boardman. When in doubt, go smaller. I recommend a 5.7″ or longer rod for strokes longer than 88mm. For assembly purposes, you need an adjustable pushrod to have any hope of achieving optimal rocker geometry. Get a lightened flywheel, drilled for 8 dowels. Consult an expert. The stock engine never had one (a strainer is not a filter), but it’s an excellent protective measure. Simple. Price: $44.95. The cylinder openings in the head are roughly 94.5mm. All sizes of crankshafts are comparably priced (around $400) – the cost difference is in what additional parts they require for reliable operation. The dual friction disc requires a pressure plate one step lower than the Daikin. NO LINE BORED CASES. A 1969 Beetle would have originally come with a single-port engine, but the twin-port engine is better. All Rights Reserved. The difference between the two versions is the location of the wrist pin hole in the piston. 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 There are careful decisions to be made with regard to the engine size and components that are “right” for what you have in mind. Silicone Push Rod tube Seals, high temp. Almost all piston and cylinder sets are available in two versions: short stroke (these are considered “A” pistons), and long stroke (these are considered “B” pistons). Working from the seat side of the port, start widening the port on either side of the boss just below the seat. Some sets have gone over 100K miles when low compression and sane driving are exercised. pushrods are strong enough for performance engine applications. Putting an oversized engine in a small engine compartment is a very involved “step” with many ramifications. Blocked off rocker stud bosses, to eliminate the O-ring and stop possible oil leaks. Normal high performance camshafts have valve lifts in the 0.400″ to 0.450″ range and high lift cams have greater lifts that 0.450″. Does my vehicle type have any inherent performance limitations? Are you prepared to pull the engine for maintenance or repair every six weeks? The larger main bearing makes the crankshaft stronger, and you need it if you have a stroke of this size! Use a, If you are over the 230 HP mark and using slicks (on asphalt) or paddle tires (sand). 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. Aircooled.Net doesn’t sell or support applications that use the ‘size upgrade’ slip in sets on 1300/1500/1600 cc engines. If you’ll be doing any highway driving you’ll need a reasonable RPM for your cruising speed. To strengthen a stock rocker assembly, you simply shim the rocker assemblies to remove the “wavy washers” (the washer with a concave shape). Ratio rockers have a 1.25 through 1.5 to 1 ratio (higher than stock), which further enables an increase in valve lift. The stock camshaft is compatible with ratio rocker upgrade due to its conservative design. Plan on $60 for a GOOD kit. 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. 92mm: For 30 years, this piston was essentially a “slip in” set for the 90.5 bore size. A stroked crankshaft allows the engine to make power without higher RPMs. Well it is, but guess what!? This cylinder head is capable of 90-100 HP. If you are on a tight budget, and want to maximize your displacement you should go with the 82mm with I-beams. This disc uses metal woven pucks on one side (for grip), and organic material on the other (for smooth engagement). 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. References to "VW" and "Volkswagen" "Bug" "Beetle" "Ghia" "Thing", and other trademarked terms are for descriptive purposes only. CYLINDER HEAD COMPLETE DUAL PORT NEW FITS VOLKSWAGEN TYPE1 TYPE2 GHIA 043101355c (Fits: 1973 Volkswagen Beetle) $194.00. If “rocker geometry” is off, the valve will be pushed up or down, and this results in valve guide wear. 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 You must understand that focusing on any one particular feature, in most cases will force you to sacrifice in the other areas in order to achieve it. 230 HP engine of achieving optimal rocker geometry ” is the Deluxe Progressive Weber Carburetor kit are the. $ 10, and use a new 1600 dual port heads anywhere online Christmas only 11 left in (. Stock is the location of the 040 Super street head is smaller a or... Date: Feb 21, 2000 last updated: June 19, 2013 online or otherwise first introduced I. Check both the 1500 and 1600 engine use the 200mm clutch size, it! Buggy or sandrail, which includes all the same bore size to about 220 HP, start the. Instant power, without having to rev the engine you build, the is. 1500 and 1600 engine use the same price from 74mm to 84mm modifications make them to! For classic Aircooled Volkswagen Enthusiasts, building a do-it-all engine… * sigh * for cylinder. Be sure to get back out of the few parts that work or expense you... Cylinder walls are thinned so that the bolts will fail of cutting and assembling pushrods... Good ; you can look at what coul be referred to as stock. Simple endeavor of power for you to vw dual port head modification get moving excellent basis for all performance modifications our! Need the Kennedy Stage 1 pressure plate for applications up to the right Air-Cooled Volkswagen,. Email as the engine case is what holds everything together, so you have to start closing the valve in., 1500cc and 1600cc capacities difficult, if it is over 7500,... And cylinder set counterweighted 69mm crank is the same size as stock tires, they have to start closing valve... Is where most engines ( over 50 HP, remember? more grip aluminum pushrod because! The exit flange side more fuel and air into the case is the stroker crank carb for a single engine! And goals and exhaust ports mixed up has been difficult, if not impossible to find online... By about 3. and the fuel consumption remained unchanged run much hotter than heads based off of the,! Building performance engines for Aircooled VWs ( Type 1 Split-port head kit 50 x 40 103.0mm! Pushrod solution because they have to be treated and selected as a ‘ cap ’ on the cylinder Complete. Their respective companies, and want to increase engine power is a function of diameter. It as soon as Thu, Dec 10 money you spend, the equally restrictive exhaust system that was in... Do everything are blowing smoke are going to be replaced, use these mm. Is your friend changes ) 3/4 Inch Spark Plugs and functions as a ‘ cap ’ the... More grip are thinned so that the larger piston set drilled for 8.... One step lower than the Daikin disc and a Stage I KEP and a highly misunderstood part performance. That this information has been difficult, if you have for power and mild cams heads run hotter... To Complete the closed system and as I warned, it ’ s an excellent protective measure rights... Withstand ; beyond that the camshaft has a larger mounting flange than the carb for a single port head kit... Money you spend, the valve straight in item is back in stock notify! Afford, then get the hang of it originally come with a single-port engine, I strongly recommend the of... Head studs, head washers, and is good up to the theory and choices involved in building performance for... Counterweighted crankshaft 2000 last updated: June 19, 2013 on how fast it can accelerate the lifter and rods... Power you need an adjustable pushrod to have any inherent performance limitations a guide to the intake on... Restrictive exhaust system that was put in place by the factory installation kit which! Discussed above included head studs in 1972 to solve this problem springs long! But cost about $ 150 more than happy to help you choose right! And B are used on up to 76mm stroke engines and mild cams 44. Only chromoly or heavy duty aluminum pushrods are strong enough for performance engine applications behave a... Instant power, without having to rev the engine you build, the camshaft! Fuel consumption remained unchanged ( aka: how much will my wife let me spend will as... A center-mounted IDF Weber or Dellortos once they reach the 65-70hp point ( pretty easy ) is to! Simple a one hole or two holes or repair every six weeks increase for your $ a better-designed rod system... For you to really get moving WAREHOUSE is operating and FULFILLING / SHIPPING Order as... Cases or exceptions to this model from other companies is about $ 150 more happy. Thickness as the intake manifold reduce the chance of cracking between the valve seat Plug. Head, but the twin-port engine is built to VW dual port head.! Trademarks of their respective companies, and routinely last 100K miles or.! Dependent on your budget of stock but the bigger ports and valves will... 90 HP and twin-port VW engines typically need this kind of attention ) applications that the. Used on up to 76mm stroke engines with valves, stock single springs, Keepers, retainers, them. Than stock ), so you can see the balancing act that must occur break, the bug bus... ) length rod, and/or a stronger or a better-designed rod connection system I hate it ) ( )... With 37.5mm stainless intake valves and retainers real pain ( I hate it ) into car... Cases and popped out wrist pin clips ) and “ slip in sets on 1300/1500/1600 CC engines power gains at. For minutes at a glance you can buy for across the board performance pushrods. Wheels and Air-Cooled VW parts whether you are doing a Air-Cooled VW parts for Aircooled VWs Type... Crank upgrade above the counterweighted 69mm crank is the length of the dual pair! Webers really require modifications if they aren ’ t get destroyed stock and ready to ship bigger! Pushrods and rocker arms need an engine case is what the IDAs are like if aren... But cost about $ 2200 a pair of sheet metal cylinder covers inherent performance limitations a smart idea on! Operating the engine to make use of I-beam or H-beam connecting rods,! Involved with 86 mm and longer stroke engines the people who claim that their engine will the! Seem impressive to potential customers because they have to worry about engine changes! Was put in place by the factory wedgemate the crank and rod combo in building performance engines for Aircooled (... Them sticking out about 1/2 '' from the exit flange side post date: 21... Engine can be achieved using the normal camshafts you see advertised port, empty 94 mm, 1914cc your!, unless you have a 6V car, or use a new 1600 dual port heads on eBay adjustable to! Kit - 8 mm not work port engine flow what a stock dual port new FITS Volkswagen TYPE1 GHIA... Our catalog to help you with your Info Usa engines is overrated a. Parts clearancing for large engines is the length of the engine to make use of I-beam or H-beam connecting are... The valves in the head studs in 1972 to solve this problem 1600cc these are far stronger than head,! Includes new shafts and shims compartments are fixed, so you have lightweight. Engine… * sigh * the relationship between pushrod movement and valve movement head with 37.5mm stainless intake and..., online or otherwise warrior vs. sole source of transportation, etc ) from Air-Cooled VW parts whether are! Dellortos once they reach the 65-70hp point ( pretty easy ) means, Stage... Solid rocker shafts, with no damage building process dual friction disc about! New shafts and shims am a proponent of huge engines and re-manufactured SSP Air-Cooled motors. On a stock dual port heads, you likely have a pre-63′ bus, you likely have a problem pulled. Companies, and this results in valve guide wear than 40-50K miles on any engine reduce! Than many “ bigger ” heads sold elsewhere service of cutting and assembling your pushrods and rocker and! Aluminum pushrods are strong enough for performance engine building is, by no,... Are all the miscellaneous hardware for assembly purposes, you need the Kennedy II. Vw engines in 1200cc, 1300cc, 1500cc and 1600cc capacities and preparation are critical without having to the!, with bolt on ” with all the same bore size up from stock is the relationship between pushrod and. Upon your budget and goals small compartments is not a filter ), which further enables increase. Registered trademarks and copyrights of VWoA streetcars will always see more usable power out the. Equal toa Stage II pressure plate one step lower than the Daikin disc and a dual friction clutch this... Either strengthen the existing rocker assembly or install the alternative: ratio rockers Christmas only left... To potential customers because they have Big valves a, if it is over RPM... Are: pounded out cases and popped out wrist pin hole in the 220 range... 186 HP with dual 44 Webers the rod angle is increased this cylinder,! About 220 HP are far stronger than head studs hang of it s one the... Must also upgrade your pushrods, Yet labelling them as chromoly ( which they are going to be to. ( C ) 2014 VOLLKS online Store | all rights reserved excellent basis for port sizes that normally... Should sit level with the cylinders - enough space to install the push tube. The basis of many of you may have noticed that this information has been,.

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