Considering the Empi HPMX 40 dual carb set: My stock 1600 DP has genuine Weber 40 IDFs with 28 mm venturies, 45 idles, and 115 mains. Best Regards. They are similar to the IDF and DRLA in appearance and function. References to "VW" and "Volkswagen" "Bug" "Beetle" "Ghia" "Thing", and other trademarked terms are for descriptive purposes only. (assuming bone stock engine). 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. Hopefully this extensive run-down on VW carburetion has helped you make your carburetion system decision, and we’ll be hearing from you soon! Even headers that do have the pre-heater flanges must be manually drilled through to make them functional. 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. Aircooled Volkswagen enthusiasts have quite a few carburetor options. And there is almost no power increase compared to a stock single carburetor because these carburetors are so small! The higher the engine speed under load, the worse the throttle response of a stocker. Jetting for Centermount v. Dual Carburetor Systems. But, they are still appropriate for stock-type use. Save yourself some grief and run filters, and just avoid these complications altogether. We offer Weber VW dual carburetor kits for the VW Bug, Super Beetle, Bus, Karmann Ghia, Thing and Type 3. 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! So – there you have it. Yes, I agree kadrons are the best all around for that. 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. Be careful when buying your carb kit, since many kits have inadequate manifold heating, or none at all! However, venturis are expensive, so it’s best to get close from the outset! We can help you soup up your 1600cc, or build the VW powerplant of your dreams. Appletree Automotive offers a complete line of VW CARBURETION DUAL CARBURETOR KITS. All Rights Reserved. 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. Gene Berg utilized these carburetors and made them very popular with VW hot-rodders. You should also note that heavy vehicles must be more conservative with venturi sizing than lighter cars. Weber DCNF: These were fantastic carbs in their day, but the Weber IDF has obsoleted the DCNF for aircooled vw applications. How to Set the 34Pict/3 Carburetor on an Aircooled Volkswagen (Vw) Beetle. The Solex 30/31 is jetted very lean, and often require a main jet upgrade to get them to run properly. For optimal operation (balance between power and drivability) venturi size should be about 3-5mm smaller than intake valve on stock or mild engines, and close to the SAME size as the intake valve on high output engines. 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. Intake manifolds come as part of a dual carburetor kits (in almost all cases). 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. Parts for the ICTs can be more difficult to come by than the more commonly used 2BBL DRLA and IDF. We have the combo that will be best suited for your particular needs and budget. Oh! 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. Carburetors meter both fuel and air, and many of the passages and jets are very small — it doesn’t take much to clog one up. A stock VW carburetor is proportionally small in relation to VW engine size when compared to most (if not all) other car makes. Choices include: Dual 1BBL (Kadron, Solex, Weber ICT, Dellorto FRD)Dual 2BBL (Weber IDF, IDA, and DCNF, Dellorto DRLA, and Solex 40P11). These kits are not only great … Again, make sure you get crossbar linkage (all of our kits have this). It’s important to note that the DRLA carb sizing is 1 step larger than the equivalent Weber. Contact us at permission@aircooled.net for permission BEFORE YOU REPUBLISH, 2. Have been running this engine and carb setup as a spare for 10 years. There are still a number of these ones still floating around, but if you plan on disassembling this particular carb, you’d better hope that you have as many arms as an octopus, an IQ over 130, and the dexterity of a brain surgeon…and I’m not kidding! Among the Weber VW dual carburetors are the Weber 34 ICT and both 40 IDF and 44 IDF kits. First vw engine. PROGRESSIVE carburetors used on VW’s are mechanical secondary carburetors. From what I have read, the stock 34PICT does not care for dirt and the off-road environment. I installed a set of CSP linkage for mine and it was a night and day improvement. Stock crank,90.5,pistons,engal 110 cam,will go with cb performance 1442 heads. Affordable, professional carb set up is just one of many reasons to buy your VW carb kit from Aircooled.Net VW … Budget VW Carburetor setup (custom throttle slide) - YouTube Because.....they were actually MADE for it. 2x the jets and venturis. Weber also made a replacement carburetor, and it was quite popular and available in the 80s’ – much more so than now. The IDF’s come in 40, 44, and 48mm sizes, and are excellent carbs for street cars. You may link to this article using the following HTML code: Linking to this article (as explained above) is the easiest, and preferred method to share our VW Tech Articles on the web. Do you mean single-throat Webers such as the 34 ICT, since you are mentioning Kadrons (no "a" in the middle) which are also single-throats? If you want a smooth running engine the only way to get that is with dual duals or singles with the stock or very mild on duration cam, must be under 230 @ .050”. I want to upgrade the carb for a bit more power and response. VW used a 28mm venturie in a 34 pict (34mm throat) carb for a 1600 (1584cc) engine. Weber IDF Carburetors and EMPI HPMX Carburetors are popular performance additions to vintage air-cooled VW bugs, buses, sand rails and dune buggies. Aircooled.Net will happily answer any further or related questions that you may have for your project car. In the aircooled VW hobby world, it is easy to get confused by the volume of available, and often times conflicting information. Proper manifold heat will make or break your set-up when it comes to functionality and drivability. Item Information. 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. If you have a problem with installation and dialing in, you sure don’t want to be on your own! VW engines are notoriously under carbureted by nature of the original design. 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. I see no point in dual 1BBLs, since dual 2BBLs can be sized to work fantastically on stock engines, so I wouldn’t even bother with 1BBL duals. Originally Posted: Sept 10,2010Last Updated: July 7, 2013. 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. The word "Volkswagen" and "VW" are registered trademarks and copyrights of VWoA. All times are Mountain Standard Time/Pacific Daylight Savings Time, Best dual carb setup near stock 1500/1600, https://www.aircooled.net/vw-carburetor-options-selection-101/, https://www.aircooled.net/synchronize-dual-vw-carburetors-103/. Because of the need for manifold heat, I do not recommend centermounts for the type 3 or 4 engine, since the kits available for these engines do not have provisions for manifold heat. The Dellorto FRDs are no longer available, and parts availability is sketchy. So choose your poison. STOCK: As you might expect, a stock carburetor … The power peak between “shorter” and “longer” is between 300-500 RPM’s — not enough to lose sleep over. Condition: Used. It’s not uncommon for jet sizes to “grow” from the wear associated with non-filtered air and fuel. Not an issue if you don’t mind. For the type 3 or 4 engine, I recommend dual carbs (more info to follow). It’s important to understand that VW engines get wider as you run your vehicle, due to metal expansion upon engine heating. Aluminum manifolds (for dual 1 BBL’s or for dual 2BBL’s) fit better, and conduct heat to the carburetors making the engine more driveable and eliminate icing problems. Its a bitch getting to #3 plug with Kads. You may hear about the Holley BugSpray carburetor periodically. 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). These are also the carb of choice for off road vehicles due to an excellent progression circuit and superior fuel control! … Your first consideration should be to note how many cylinders each carburetor throat is “feeding”. Engine runs excellent and pulls smoothly. 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). 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. Make sure you deal with a vendor who will stand behind their products in case you get one of the lemons…. Most stock carburetors came with electric chokes, and they definitely made life easier for the driver of a vehicle with a centermount set-up. 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. He writes 15/1600 base engine, so personally I assume sgl port. Our technology has been painstakingly … You can get away with one but connecting two makes it that much smoother. carb linkage new & improved dual carburetor linkage is used with weber ict, idf, ida, kadron… 3/8″ 6061-T6 Aluminum Linkage Rods Forged right- and left-hand thread male rod ends for easy adjustment Most people don’t realize that carbs as they are supplied from the factory are assembled, but NOT set up. When an aircooled VW engine heats up it expands and the distance from the individual carburetors in a dual carburetor system increases. Right now I'm running a stock 1600 DP in my Baja Bug. The original engine was another 1600, though "warmer" with an Engle 110 cam, CW crank and lightened flywheel. This wear also affects the jets in your carb! … 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. The gasoline has a hard time staying as a vapor on the long run to the cylinders in a centermount set-up. For: Type 1 Beetle 1500 and 1600cc w/Dual … That sounds just right. Filters do not limit performance, and don’t let anyone tell you otherwise. All aircooled engines get wider as they get hotter, and some centerpull linkage does not compensate for this. If you are going IDF type, seriously consider the carb windows (access panels on the inner fender. ) STOCK REPLACEMENT: As you probably guessed from the name, replacement carburetors are not original equipment. Only a masochist should consider trying to adapt the bus carbs to some intakes you have lying around. A good kit won’t be too far off straight out of the box, but even a close one will need some tweaking before it is perfect! You will hear some guys reporting and complaining about 8-12 MPG, but I can guarantee you that their carburetors are jetted improperly. This guide will show you some recommended jetting for standard air-cooled VW engine sizes. So I've been neglecting my bug for a while and decided that this summer I will treat it to some new parts. 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. Don’t assume yours is ready to roll out of the box! There are a couple reasons. Posted: Sun Aug 16, 2020 4:08 pm Post subject: Best dual carb setup near stock 1500/1600 Strong running engine got it at steal as it was stuck but I could tell by looking motor was … 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. They are quite small, so fitting them into the VW engine compartment is pretty easy, unlike many other larger carb sets. All the ins and outs of carburetor and carb system options. I would like to stay with a single carb… Your Dunebuggy or VW Beetle will be up and running fast when you get your parts from … © 2020 Aircooled.Net — This article is copyright protected. I plan on getting it a new fuel pump, dual carb kit and tires so I can drive it more. 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! Aircooled.Net offers Carb Setup as an option when you buy your carbs from us, but we also provide a basic “how to” article for doing a VW Carb Set Up Procedure yourself. A dual 34 carb kit, put the carbs outboard on top of the head, two air cleaners (replaces the carb and manifold) Comes complete with two New 34 PICT carburetors, manifold adapters, linkage, chrome air cleaner, hardware kit. • 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. So I was wondering what would be that best dual carb … Here’s a little side note about intake manifold length. Gene Berg linkage, 009 distributor, and 1 3/8" quiet pack header. If you have a centerpull linkage setup, the throttle position can be … 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. There is one golden rule for carburetion systems of ALL types – you must always run air filters! © 2020 VW Parts for Aircooled Volkswagens - Aircooled.Net. In my experience, the aluminum linkage can seize or strip, since the down rod threads are so small and aluminum is soft. We rely heavily on email as the most efficient and accurate way to serve our customers. Therefore, fuel control is easier (less chance of flooding) with a centermounted carb. We provide the classic VW hobby with tech tips, project advice, and quality parts for VW Restoration, VW Performance and Custom Aircooled VW projects. The only modification to the engine was some minor porting to the 35 x 32 mm heads. and fixed some oil leaks by replacing the stock pushrods with sprig-loaded pushrods. Ask what venturi sizes are in the kit you are considering for your car. Off roaders, should opt for a centermount progressive for smaller engines, and the centermount IDF/DRLA for larger. Details about Type 3 VW 1500s 1600 Complete Dual Port Carb Setup With Tins & Air Cleaner. 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. Why? VW PROGRESSIVE CARBURETOR CONVERSION KIT. High Performance EMPI Carburetor Kit Two barrel progressive carburetor. All product names used on this site are trademarks of their respective companies, and are used with permission. These carburetor kits can take a lot of time – up to 8 hours – to dial in for your particular car. This is why adding 1.4 rockers to a stock engine along with dual kads or dual 40's really wakes it up. These can work very well, but I’m not a fan of their linkage (a form of the centerpull) – and they don’t give you the option of crossbar. Because a very worthwhile Weber set would be the pair of dual-throat 40 IDF, or the clone HPMX. This usually isn’t a consideration until you contemplate the two different styles of linkage. VW Beetle & VW Karmann Ghia with 1300-1600cc dual port engines. A “bargain” kit is hardly a bargain when it interferes with your driving experience by making your car temperamental! We offer different venturis and jets for those of you that want a little more umph. Weber IDF: This is the most widely used aircooled VW carburetor, and the one we recommend in almost all cases. When you order your kit, I strongly recommend you opt for aluminum (as opposed to steel) intake manifolds. Mounted where the stock carb was. You are limited to around 100 HP with these carbs. 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. Reliability is also a key issue. Also, the exhaust system you have on your engine will affect manifold heat. The main downfall of this system is the time it takes to get it set up properly. Wayne VW … Damn near impossible with IDFs. The best/easiest/safest way to reference this article online is by LINKING TO THIS PAGE. Other issue is space if IDF type. Effectively, this means that all dual carburetor kits with aluminum intake manifolds do not need intake manifold heat like the centermount kits! 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. 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 … These will not flood like the DCNF. 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. 60 hp. All 2BBL Dellorto and Weber carbs have changeable venturis, so you DO have some tunability and re-sizing. A mechanical secondary carburetor opens in relation to throttle position. Read our VW Carburetors 102 article on VW Carburetor Jetting for more info on jetting theory and procedure. That sounds just right. We built some custom Kaddie Shack … They are very tunable, and the kits are reasonably priced at under $400, but we don’t carry them because of their linkage design faults. This is because of fuel condensation issues. The linkage is very nicely done, we modify it here to make it work the way it should, and minimize your headaches. For a straightforward pair of dual carbs on a stockish engine, Kadrons are my favorite. The Progressive set-up uses a small primary barrel, allowing for excellent drivability and mileage. 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. 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). If you do go with kadrons the best thing I can recommend is to throw the stock linkage aside and install a quality set of aftermarket linkage. 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. Keep Fweemin’! Wear commonly results in a vacuum leak at the throttle shaft bushing (air sucks in around the worn bushing). i have 1974' 1303S beetle 1600 CC Dual port Engine with Bosch 009 Distributor, i want to change the stock carb. The Progressive set-up is an excellent combination of performance, drivability, and economy. Aircooled.Net is not affiliated with Volkswagen AG or Volkswagen of America, Inc. or any of its subsidiaries. Racecars are the exception! Kadrons: These are Brazilian built Solex carbs. Short intake manifolds make it difficult to get your plug wires on and off, but they do allow more room for larger air cleaners. You are REQUIRED to keep your republished version of our work UPDATED WITH ANY CHANGES MADE TO THE ORIGINAL. This is a performance carburetor package: Cruises … I have no experience with the 34 ICTs. Dual 35 mm Solex: These kits are only available for upright engines, and only available for Dual Port heads. The Solex 30/31 is one of these carbs. Linkage usually falls in one of two categories: Centerpull and Crossbar. I favor the crossbar linkage style for all applications, if you have a choice. Not many of those out there. Most are also available with an electric choke, making it easier to start and drive when the engine is cold and when air temperatures are colder. 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. I have routinely run my car at well below zero degrees F, with no problems at startup or during operation with dual carbs. I strongly suggest you pay the little bit extra for a good kit, unless you live in the hot desert where the manifold heat won’t be needed as often. Choose the 40 IDF for <2000 cc, and the 44 IDF for 2000 cc and larger. They do not have much of a progression circuit (they only have two progression holes where the IDF has four), so in unmodified form, they are either off (idle) or on (full throttle)! 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. Type 3 VW 1500s 1600 Complete Dual Port Carb Setup With Tins & Air Cleaner. If … 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. My experience has been because they aren’t typically all that knowledgeable about what they are selling you…so you should take the pre and post product support and knowledge into consideration when you are weighing a cost savings on your purchase…and also keep in mind that many parts suppliers don’t supply installation and jetting instructions with your purchase! When choosing your carburetor kit, you also have the type of linkage to consider. 1973 - Gasket Set - 13, 15, & 1600cc Dual & Single Port Engines; LABOR-MC-BB - Machine Case - Big Bore; LABOR-FLOW - Full Flow Case; HP is rated using Dual 40mm IDF Carbs, 1 1/2" Merged Header. … Carburetor System Options. It comes in 36, 40, 45, and 48 mm sizes. Stock 72-74′ busses used a similar carburetor, but these carbs were horrible to work with even when they were new! Are you asking yourself why you’ve never gotten this kind of straight, down to earth, necessary information from the average VW parts supplier? 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. 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)! 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. You want to get in the ballpark from the beginning since re-jetting a set of dual 2BBLs can cost from $100-150, and take a fair amount of time. Solex 40P11: These are old carbs (they used to use them on old Porsches), and they work very well IF they aren’t worn out (and a non worn out one would be a rare find). When it’s clogged, your car will run erratically, and then you have to chase down the problem. Stainless Steel Braided Fuel Line Kit, Weber IDF and Kadron, 1005-20 is a custom tailored Stainless Steel Braided Hose Kit will finish off your dual carburetor kit installation.