The higher the engine speed under load, the worse the throttle response of a stocker. The power peak between “shorter” and “longer” is between 300-500 RPM’s — not enough to lose sleep over. Even headers that do have the pre-heater flanges must be manually drilled through to make them functional. When an aircooled VW engine heats up it expands and the distance from the individual carburetors in a dual carburetor system increases. Quality control for replacements is not as good as that which was on the original Solex carbs, so you take your chances and should expect a lemon to pop up now and again. With our 1500 single port down for the count, I turn to a friend who gifted me this 1600 Dual Port that's been sitting in a field for 15 years. Have been running this engine and carb setup as a spare for 10 years. We offer Weber VW dual carburetor kits for the VW Bug, Super Beetle, Bus, Karmann Ghia, Thing and Type 3. Carburetor System Options. He writes 15/1600 base engine, so personally I assume sgl port. Carb throats that feed multiple cylinders (the case in stock engines) have to be adjusted to a compromise setting, and the result is that all the fed cylinders run at a less than optimal air/fuel mixture. All 2BBL Dellorto and Weber carbs have changeable venturis, so you DO have some tunability and re-sizing. Weber IDAs were designed for race applications, but contrary to popular opinion, these can work very well on the street but have some inherent limitations. When it’s clogged, your car will run erratically, and then you have to chase down the problem. So I was wondering what would be that best dual carb … They come with FACTORY intake manifolds (which mean they fit), and factory carbs, since the entire kit is based on factory components made in Brazil. A carb expert can put a third progression hole in which will make them more streetable (we offer this as an option if you buy them from us), and this modification will increase driveability and MPG. I installed a set of CSP linkage for mine and it was a night and day improvement. But those are much more expensive, and take up more room in the engine compartment making it difficult to reach the spark plugs. Again, make sure you get crossbar linkage (all of our kits have this). Therefore, fuel control is easier (less chance of flooding) with a centermounted carb. I favor the crossbar linkage style for all applications, if you have a choice. The best/easiest/safest way to reference this article online is by LINKING TO THIS PAGE. Usually, you will not have a choice on manifold length since your linkage clearing the generator/alternator and the space available in the engine bay dictates what you must use. Be careful when buying your carb kit, since many kits have inadequate manifold heating, or none at all! Originally Posted: Sept 10,2010Last Updated: July 7, 2013. They make life so much easier. Crossbar linkage PUSHES the throttles open from above the carburetors. Electric Choke Solex: Solex’s work well, but these use center-pull linkage. I want to upgrade the carb for a bit more power and response. NON-PROGRESSIVE systems usually use a Dellorto DRLA or Weber IDF or DCNF 2BBL carburetor. But if you instead have a need to REPUBLISH or PRINT and DISTRIBUTE our copyrighted work, you may do so for NON-COMMERCIAL USE only, if you adhere to the following requirements: 1. © 2020 Aircooled.Net — This article is copyright protected. I'm looking at dual solexs or kadarons I don't want no tuning headaches etc just a little more ump .I have read and talked to many people with webers and they don't like them to many problems or is there a single carb set up that will do what I want . This is partly because they are supplied from the factory with generic jetting often not suited for the VW engine, and also partly because the jets can be difficult to access. It’s important to understand that VW engines get wider as you run your vehicle, due to metal expansion upon engine heating. Many vehicles have carburetors that are simply worn out, that have been ignored to a point far beyond what could remotely be considered “acceptable condition” by reasonable standards. Filters do not limit performance, and don’t let anyone tell you otherwise. Contact us at permission@aircooled.net for permission BEFORE YOU REPUBLISH, 2. I would like to stay with a single carb… • Throttle body from same mid 80s GM V6 adapted to stock beetle intake with a custom Bug carb flange to GM throttle body flange thing I made. When faced with deciding on the type of carburetor set-up you should run, most people could use some clear-cut details and ... Centermount 1 Barrel Systems. Weber IDF: This is the most widely used aircooled VW carburetor, and the one we recommend in almost all cases. They are similar to the IDF and DRLA in appearance and function. This is because of fuel condensation issues. The original engine was another 1600, though "warmer" with an Engle 110 cam, CW crank and lightened flywheel. Budget VW Carburetor setup (custom throttle slide) - YouTube Weber IDF Carburetors and EMPI HPMX Carburetors are popular performance additions to vintage air-cooled VW bugs, buses, sand rails and dune buggies. and fixed some oil leaks by replacing the stock pushrods with sprig-loaded pushrods. With the crossbar linkage, throttle position is virtually unaffected by engine temperature and the associated growth/contraction, so it’s more consistent in it’s operation. Condition: Used. Speaking of which — after you buy a set of carbs, we cannot emphasize enough how important it is to have your carbs PROPERLY set up. There is one golden rule for carburetion systems of ALL types – you must always run air filters! Make sure you deal with a vendor who will stand behind their products in case you get one of the lemons…. Reliability is also a key issue. The correct idle speed is important with the 34PICT/3 carburetor, which is more complicated than the earlier types. A mechanical secondary carburetor opens in relation to throttle position. These carburetor kits can take a lot of time – up to 8 hours – to dial in for your particular car. Type 3 VW 1500s 1600 Complete Dual Port Carb Setup With Tins & Air Cleaner. It will show jet sizing for everything from a VW 1600 CC engine to a VW … The power difference between a centermount and dual set-up is very small, and with the above noted advantages of running a single, it’s an easy decision to justify. Item Information. Also, the exhaust system you have on your engine will affect manifold heat. So – there you have it. The first thing that strikes you about this kit is that they are inexpensive! Street and race use only. we do a mild upgrade frequently at the shop and here is my recipe. Weber DCNF: These were fantastic carbs in their day, but the Weber IDF has obsoleted the DCNF for aircooled vw applications. AIRCOOLED.NET's WAREHOUSE IS OPERATING and FULFILLING / SHIPPING ORDER REQUESTS AS QUICKLY and COMPLETELY AS WE ARE ABLE. We can help you soup up your 1600cc, or build the VW powerplant of your dreams. Cast Iron and Aluminum distributors rebuilt since 2000. http://www.thesamba.com/vw/forum/viewtopic.php?t=649622, http://www.thesamba.com/vw/forum/viewtopic.php?p=8115884#8115884, https://www.thesamba.com/vw/forum/viewtopic.php?t=...mp;start=0, https://www.thesamba.com/vw/forum/viewtopic.php?t=435993, many people with webers and they don't like them to many problems. Weber also made a replacement carburetor, and it was quite popular and available in the 80s’ – much more so than now. Because of this, if you live in a region that hits colder temps, dual carbs are the way to go! The Progressive set-up uses a small primary barrel, allowing for excellent drivability and mileage. Failure to adhere to the above requirements will constitute a violation of copyright. The linkage is very nicely done, we modify it here to make it work the way it should, and minimize your headaches. A key difference to note between a centermount application and a dual carb set-up using the “same” carburetor is that, by comparison, the carb in the centermount is jetted slightly richer on the idle circuit. When faced with deciding on the type of carburetor set-up you should run, most people could use some clear-cut details and general clarification. If … You may hear about the Holley BugSpray carburetor periodically. It was a decent performer in it’s day, but is essentially obsolete due to age and wear, and you aren’t likely to find one in good enough shape to rebuild or run. In these cases your idle speed can depend on how hot your engine is (with poorly designed linkage, the linkage gets tight as the engine warms up)! In addition to wear, dirt WILL clog the jets on your carburetors! Its a bitch getting to #3 plug with Kads. If you want corroboration, just have a look at the winners of the SCORE races and then check out the induction systems installed on the winning cars…. Manifold heat also “assists” mileage and makes centermounts considerably more driveable, since fuel is more likely to stay atomized, since it is not as likely to condense on the way to the cylinders. You are limited to around 100 HP with these carbs. 26-28 MPG on the highway is attainable, even with huge engines, when they are properly set up. I really did not want to spend a fortune but my old carb was running … © 2020 VW Parts for Aircooled Volkswagens - Aircooled.Net. Effectively, this means that all dual carburetor kits with aluminum intake manifolds do not need intake manifold heat like the centermount kits! Are you asking yourself why you’ve never gotten this kind of straight, down to earth, necessary information from the average VW parts supplier? 90% of the time, off road applications should use a centermount system. Quality machine shops like RIMCO can repair this condition, at a reasonable price, but some carburetors (specifically the 34 PICT) just don’t rebuild well, and you are better off to replace them. Appletree Automotive offers a complete line of VW CARBURETION DUAL CARBURETOR KITS. If you have a centerpull linkage setup, the throttle position can be … The Progressive set-up is an excellent combination of performance, drivability, and economy. There is no "rich fuel" smell from the exhaust when idling. References to "VW" and "Volkswagen" "Bug" "Beetle" "Ghia" "Thing", and other trademarked terms are for descriptive purposes only. they will run on a wide range of engines (from stockers to full race engines), they fit nicely in the engine compartment, they are easy to fit air filter assemblies onto, they have a modern float design which prevents flooding, they have 4 progression holes for smooth driveability under light throttle conditions, parts availability is excellent because they are still being made, they have a vacuum advance port (see SVDA and Unilite). Oh! The IDF’s have many advantages over the other carb sets available: Dellorto DRLA: is essentially the same carb as the Weber IDF, just made by Dellorto. Engine runs excellent and pulls smoothly. Most people don’t realize that carbs as they are supplied from the factory are assembled, but NOT set up. VW used a 28mm venturie in a 34 pict (34mm throat) carb for a 1600 (1584cc) engine. In general, short intake manifolds produce more power at high RPMs, and long intake manifolds produce more power at low RPMs. Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts, Request to Add an Item or Combine an Order, Request to Cancel [Either an Item or Order], Report PROBLEM WITH SHIPMENT [within 10 DAYS], Request RETURN AUTHORIZATION [within 30 DAYS], Initiate a WARRANTY CLAIM [timeframe varies by product], Get VW Project/Product Tech Help [Free via Email], VW Carb Tech 101: How to Select the right Carburetor Model and Linkage Style for your Aircooled VW, Stock Replacement (Solex 30/31, and Weber), Progressive (Weber DCAV, DCEV – “E” stands for electric choke), Non-Progressive (Weber IDF, DCNF or Dellorto DRLA). Only buy Kadrons if you are also willing to keep your glovebox stocked with these Kadron essentials. The engine can't take in anymore air even though the carb could supply it. There are a number of aspects to consider when upgrading your fuel system and selecting the best set of VW carburetors for your engine and driving needs. I got it unstuck it's in my daily driver now.It's the strongest running stock motor I've ever had in 50 + yrs of fooling with bugs. You should not use them for an off road car, even in a centermount application, as they will flood easily (their fuel level control is not very effective). We also installed a 1-5/8" exhaust system (don't do this on a dual port!) Stock crank,90.5,pistons,engal 110 cam,will go with cb performance 1442 heads. Original VW carburetion relied on it because centermount set-ups can ice up if manifold heat isn’t available! Most stock carburetors came with electric chokes, and they definitely made life easier for the driver of a vehicle with a centermount set-up. Yes, I agree kadrons are the best all around for that. These will not flood like the DCNF. KIPA Carburetor For VW Beetles Super Beetles 1971-1979 Dual Port 1600cc Engine 12V Electric Choke 34 PICT-3 Volkswagen Bug Bus Thing Karmann Ghia Squareback Transporter, OEM # 113129031K 98 … This usually isn’t a consideration until you contemplate the two different styles of linkage. For: Type 1 Beetle 1500 and 1600cc w/Dual … The Weber ICT is a good carburetor (not great), but because of the 35mm Solex kit availability, we only recommend the ICT for Single Port Upright, Type 4, and Type 3 engines. Here are Aircooled.Net’s recommendations: For street use, I prefer either the stock carb, or a dual 2BBL carb system (all brands of carbs are okay, but remember to opt for steel crossbar linkage). They are quite small, so fitting them into the VW engine compartment is pretty easy, unlike many other larger carb sets. ALL centermount applications require intake manifold heat to perform properly in cool weather. Dual Weber 34 ICT Carb Kit, Type 1 (Upright), Type 3, and Type 4 Engines, CB Performance is a GENUINE Weber carburetors that are made in Spain, not Chinese copies! I saw some dyno results for a used 1600cc engine, before and after the dual-carb setup: a peak-to-peak gain of 13 HP! I have no experience with the 34 ICTs. How to Set the 34Pict/3 Carburetor on an Aircooled Volkswagen (Vw) Beetle. Centerpull linkage uses a “pivot” system towards the center of the engine, and when the gas pedal is pushed down, the linkage PULLS and/or pushes the carb throttles open. And when purchasing your carb kit, ask whether the linkage is made of aluminum or steel. Stock carburetors are still available new from many vendors, and the installation of a new carburetor on a well-maintained engine can transform your bucking vehicle into a smooth operator. These carbs are outstanding for mild engines, from semi-stockers to mild street engines. Short intake manifolds make it difficult to get your plug wires on and off, but they do allow more room for larger air cleaners. The linkage ball-joints have been known to break or pop off, and if you pay attention to cars you see with Kadrons, you will note that bread ties, zip-ties, and rubber-bands are frequently resorted to as a quick fix for keeping the linkage together. Right now I'm running a stock 1600 DP in my Baja Bug. Save yourself some grief and run filters, and just avoid these complications altogether. There are a couple reasons. You have a choice on a racecar because of the larger engine bay and/or no engine tin and generator/alternator. The gasoline has a hard time staying as a vapor on the long run to the cylinders in a centermount set-up. I've used all those carbs, yes they all will work well and they will add more power, but hands down in my opinion, 36 dellorto would idle the smoothest and easy to maintain and they won't wear out over time, and you could utilize them if you were ever to go a bigger engine. If you are going IDF type, seriously consider the carb windows (access panels on the inner fender. ) Long intakes require a shorter air cleaner which is a limitation for air filter area. Your first consideration should be to note how many cylinders each carburetor throat is “feeding”. The carbs were the same ones, and I did not change anything on the settings/jetting. Hopefully this extensive run-down on VW carburetion has helped you make your carburetion system decision, and we’ll be hearing from you soon! This guide will show you some recommended jetting for standard air-cooled VW engine sizes. Not an issue if you don’t mind. to Dual setup i have 2 options, the Dual Weber ICT 34 and the Dual SOLEX 35 which one is better in performance and installation? Lastly, a carburetor mounted in the center is going to get bounced around less then if it’s mounted on the outside of the car as the car is pitched side to side. Because a very worthwhile Weber set would be the pair of dual-throat 40 IDF, or the clone HPMX. Aircooled.Net is not affiliated with Volkswagen AG or Volkswagen of America, Inc. or any of its subsidiaries. The Solex 30/31 is one of these carbs. STOCK: As you might expect, a stock carburetor will make your vehicle perform as it did when new, assuming that the rest of your engine is also up to the task or in almost new condition. VW PROGRESSIVE CARBURETOR CONVERSION KIT. Damn near impossible with IDFs. Dual carbs require more complex linkage, and when you are talking about off-road use, this is just more parts to break or give you problems. These are not widely used because chokes are not necessary on VW dual carburetor set-ups, and the inclusion of the electric choke makes this kit expensive. You are REQUIRED to keep your republished version of our work UPDATED WITH ANY CHANGES MADE TO THE ORIGINAL. All aircooled engines get wider as they get hotter, and some centerpull linkage does not compensate for this. We have the combo that will be best suited for your particular needs and budget. Aircooled.Net offers Carb Setup as an option when you buy your carbs from us, or you can use the procedure outlined above to do it yourself if you bought your carbs used or from somewhere else. 2x the jets and venturis. These kits are not only great … But, they are still appropriate for stock-type use. Jetting for Centermount v. Dual Carburetor Systems. Among the Weber VW dual carburetors are the Weber 34 ICT and both 40 IDF and 44 IDF kits. 1970 1600 d.p. 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Leaks by replacing the stock 34PICT does not care for dirt and the off-road environment the time, off applications... To “ grow ” from the outset article is copyright protected used 2BBL DRLA and.... Port carb setup as a vapor on the settings/jetting 3 VW 1500s 1600 complete dual Port carb setup Tins. S come in 40, 44, and often times conflicting information of carburetor tends... And some centerpull linkage does not compensate for this in general, short intake manifolds any of its.. Idle speed is important with the 34PICT/3 carburetor, and parts availability is sketchy we offer different venturis and for!