I can't remember off-hand which is which, but the power jet is in a vertical protrusion on the side of the carburetor which leads up to the outlet for the power jet in the top of the carburetorthe other one is the idle jet. My distributor is a vacuum advance (with a centrifugal?). If you live at altitudes above 5000 feet, you also have to consider that, as high altitude results in the engine running rich (less oxygen in the air but the same fuel flow through the carburetor). The following topics are discussed in this article -. Now I have installed a newer Solex Brosol 30/31 carburetor (the Brazilian one), in good shape. 34 PICT Carburetor Combination. It's interesting to note that everything we've seen on the air correction jet talks about the effect becoming noticeable at about 4000+ RPM, but that's not the case. Another - You mentioned a bigger jet -- are they available? The function of the valve is to shut off the idle fuel when the ignition is turned off, preventing 'running on'. The main jet provides fuel from about 1500 rpm right up to maximum rpm. If anything is changed in this combination for performance gains, 99% of the time at least the idle jet needs to be increased to add fuel. 737-240. nomenclature and part number (referring to the exploded view). . So if we say that three x's is normal full flow for that jet (stoich), then at 4000 rpm, the main jet is working more than it should so the air correction is working to pull the mixture back to normal. Rob responded - If you still have a vacuum distributor - yes. If you try removing the idle shut-off valve and the air correction jet (the brass bolt head in between the float bowl and the main throat) and the idle jet itself, and then blast air through the passages in both directions, that might get it. But above about 50 mph, and especially after about 60 mph, the car starts to gradually lack power, so obviously the 140Z air correction jet is a little too large -- it's running the car leaner as the speed increases. Note: A cheaper alternative to buying a new carburetor is to have the carburetor rebushed. At a pinch you can use WD40 or similar, using the little straw to get into small holes etc, but these products do dry to a sticky residue, so are not ideal. I have 4-5 I've collected over the years, and the smaller ones can be re-drilled to the larger sizes. In most cases you can just leave the power jet alone. Every engine is different, so strongly consider getting our micro sized idle jets to really dial it in. 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 air corrections I have are 125z, 170z and in the carburetor a 135z. They are cheap enough. Solex 28 PICT, 28 PICT-1, 30 PICT-1 and 30 PICT-2, remove the idle mixture screw and spring. Located in: Braunschweig, Germany. Dave jetted his new carburetor as follows: main jet - X130; idle jet - 55; air correction jet - 80Z. Take the car for a run at a modest speed - say 35-40mph. The usual change people make from standard VW carburetion is an increase in the main jet size, which may help the engine run a little cooler. Except for the fact that it won't idle! So how do you know which to use? SOLEX 34 PICT 3 Carburetor Adjustment Procedures. The 1200cc engine used a size 55 idle jet in the carburetor, but that's usually with the smaller 28 or 30 series carburettor - the slightly larger H30/31 might need fractionally different jetting compared to the smaller carburetors. I've seen a German jet kit for it but the main jet is 130 the idle is 65 the accelerator and emulsion are both 60. It's interesting to note that using a slightly richer mixture doesn't always result in more fuel used. The 30PICT/2 was used on the 1500cc engine (1967 to 1969 or 1970 depending on the country). The 30PICT/1 carburetor was used on most 1300cc engines (about 1964 to 1967, and in some countries, up to 1970). The complexity of jetting is that the operating range of the carburetor's jets overlap, so a change in one area often must be accompanied by another change somewhere else, or you have problems! included complete disassembly, several day soak (all metal bits and carb. The adjustable jet would work with any of the Solex carburetors which have the jet mounted horizontally inside the carburetor. Note: Do not soak the choke heating element, pump diaphragm, float, vacuum diaphragm, or any other rubber or plastic parts in carburetor solvent. Check the float valve for binding and leakage. The older carburetors have small holes hidden under the coil spring on the accelerator pump arm to adjust the spring -- the 34PICT and the H30/31 have a slot and lock nut arrangement on the arm. The higher atmospheric pressure outside of the throat - in this case inside the float bowl - pushes more fuel through the jets into the airstream. Air is much less dense than gasoline, so that makes sense. But after November 15th, all still pending backordered unshipped items will be automatically CANCELLED **(except for any special ordered drop-shipped or made/machined-to-order items). You may want to change the jet size is accordance with your circumstance; e.g., smaller jet size at high altitude (X125 at 4000 ft.). Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile 34 PICT Carburetor Combination, Automatic Choke Discussion and Adjustment Procedure. To explain, the main jet supplies the fuel, and it supplies too much as the rpms increase (a function of the increasing vacuum in the main venturi). Super Stock 34 PICT 3 (34-3) Carburetor, LIMITED PRODUCTION, 12V, Bocar. I rebuilt the carb that was on it, as well as a. swap-meet spare, before installing the engine this spring. The try the same test at a higher speed - a steady 55-60mph. And the second issue is the presence of Ethanol (alcohol) in gasolines. Note: Dave found that NONE of the several top-to-body gaskets provided in the kit was the right size or configuration for his carburetor (he was possibly sent a kit for the earlier series carburettors). Note: Compare the new float valve with the old one. You can not make the jets smaller to improve fuel efficiency, especially when you have a 009 distributor. I also have a stock carb rack but it appears to have water damage and one or more carb is seized. Starts right up and runs great. Idle jets are available in small increments. Jet-A-Vator. Make sure the old one you took out stays in good shape so it can be reused. It evolved from the 28 PICT which became the 30 PICT in 1968. More throttle does make it go away. The H30/31 is the largest carburetor you can use with the normal single-port manifold. Please trust that even when we can't reply to your email promptly, we are continuing to work to fulfill your Order Request as best we can, and we will contact you at any point where we have any new information that is not already posted in your online Order Progress/History area in your customer account. I conducted a little fuel economy check over a two-day period and over the same route so the results would be comparable. You'd think the jet sizes would follow the capacity more closely, but they don't. Use stock vacuum line from air-intake #4 for CDI control unit. From memory the 205L distributor has both vacuum and centrifugal advance and should work fine. Hey, use the stock jet size, which is 125 for the 34 PICT-3. and 34-3 carb. It's possible to develop partial blockage in one or more jets. The carburetor idle circuit controls how much fuel you have at idle. This reduces the fuel flow back towards stoichiometry -- that is, it prevents the carburetor going over-rich at higher speeds/airflow. You also set the accelerator pump for maximum stroke when using the 009. This helped a lot. Perform the Idle Adjustment and Timing procedures. Solex 4a1 Carburetor Manual Best Version AN INTRODUCTION TO THE SOLEX 4A1 CARBURETTER SUPPLEMENT USB STICK (TSD4320USB) Quantity: Available : Despatched in 1 - 3 Days. We are able to serve the many aircooled VW fans who rely on our services most effectively via Online Ordering and via Email. Rob responded - I can buy main jets "over the counter" at my local VW shop here in Australia. Now unscrew it exactly 2-1/2 turns. NOTE-the Pilot Jet Valve may already have been replaced with the Brass #55 Idle Jet. Some tests to help you determine proper jetting. 2. If it is any lower the choke may be staying on too long, or it may be stuck on and won't open at all. Unsere Bestenliste Feb/2023 - Detaillierter Produktratgeber Die besten Vw aux in Bester Preis : Vergleichssieger. With the larger main jet, you might also need to consider a size 50 idle jet in lieu of the normal 55. Have a look at the size stamped on it too. on a 1776. There is a Mexican Solex 30 Pict-1 replacement Carburetor. The emulsion tube mixes air from the air corrector jet with fuel from the main jet, and controls the mixture from the discharge nozzle at all engine speeds that the main jet is working. See our Carburetor Overhaul Procedure. The air correction jet is also changeable. Turn the Bypass Screw (the larger one) out a couple of turns, to get things started. We ONLY charge for items that are available to be shipped in a timely or reasonably reliable timeframe. Dispatched today if paid within 1 hr 21 mins See details. Delivery: Estimated between Mon, 6 Mar and Wed, 15 Mar to 23917. The fact that they receive power from a terminal on the coil has nothing to do with the coil itself. If the jets are screw in to tight that will cause high idle. The timing is set ATDC. The most common power jet size on all Solex carburettor versions is 65 (except for the H30/31 which usually has a smaller power jet - around 47.5). It's a complex problem that faces ALL open throat style carburettors. FreeShipping. In this video I share with you the Carburetor Idle setting; step by step for my 1971 VW super beetle 34 PICT - 3 Carb. Some of you may be using this Carburetor. When using the 30PICT or H30/31 carburetor on a twin port manifold and any vacuum distributor, change the jets to X125 or X127.5 main, 55 idle, and leave the air correction at 125Z. Carburetor Disassembly
Find many great new & used options and get the best deals for Size 45 Pump Tip for Weber Dcoe Dcom Dco Carburetor Jet 76801.45 at the best online prices at eBay! If it's working, you'll hear a clicking sound as the relay pulls in. Make sure your regular tuneup things are in order. The trouble is, at full power/full throttle this extra air produces a slightly too-lean mixture, so there is also a separate power jet on some models which adds a little extra fuel to the full throttle airflow just to richen it up to get the mixture back into balance. So a 34PICT/3 carburetor with an 009 distributor should be jetted with an X130 or X132.5 main jet, and an 80-100Z air correction. Volume control screw O-ring (18)
The main jet can usually be removed without taking the top off the carburetor, but it's fiddly. Again, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at, Pass the end of the accelerator cable through the cable pivot pin installed in the throttle lever. Carbs help Solex 32 34 Z2 Overclockers UK Forums. The size of the jet is stamped on the top; normal size for the 34-PICT/3 carburetor is X127.5 (1.275mm diameter hole). The larger 34PICT carburetor should have the larger X127.5 main jet, and since the larger 34PICT carburetor doesn't have the extreme airflow with a 1600cc DP engine that the 30PICT carburetor does, the over-rich problem is reduced, so you use a SMALLER air correction jet - less correction is needed. The idle jet sits in a protrusion running down to the bottom of the carburettor, and the power jet sits in a protrusion running up to the top of the carburettor, so it's easy to tell which is which. valve - idle cut off (30pict-2,3) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27. The 1600cc DP can flow more air than the 1600cc SP and smaller engines. Actual product may differ in appearance. The extra advance helps reduce the 009 flat spot just a little. Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. This will have the main jet supplying the fuel, and read the plug again. Solex Carb Spacer for Alternator, 30 PICT Carburetors, 00-3245- I think you are saying that the engine stalls (stops running) when you push the throttle pedal? We are now only fulfilling order requests only for items that we have in stock OR that we know can be acquired within a defined timeframe. PLEASE NOTE: You are NOT CHARGED for out-of-stock items. And fuels! On the twin port engines, it has to be used with a 30/34 adaptor, since the twin port manifold has a larger mounting flange than the single port manifold. The VW 105-1 Air Correction Jet would be 125z. Reply to Phatman. "N" on the schematic is the coil. Also if you still can't get a slow idle loose the jet a little on the other side of carb were the bypass screw is. jet - aux idle speed fuel 4. cover -with spring and heater element 25a. Be sure to check your engine's fuel pressure and ignition system. Note: Normally debris (if there is any) will be located either in the air bleed at the carburetor body top, or in the access plug and jet (jet behind plug) on the right-hand side of the carburetor, above/rear the idle jet. I find it much easier to just use a regular 13mm box-end wrench (ring sopanner), as getting the S-wrench on and off of the nut is very difficult (walls on the box (ring) end are too thick). Sorry! Following that is a listing of the parts, giving
The power jet sticks straight out to the side, and sits in a protrusion nearer the top of the carburetor - if you remove that jet you can see a drilling straight through the carburetor body to the air correction jet/emulsion tube where the the main fuel supply is delivered into the throat of the carburetor. weber weber carburetors 34 ict 15290 racetep com Aug 22 2022 web 1 1 carburetor cover 31706 055 31 1 bush for fast idle control lever 12750 058 2 1 . The exhaust system peashooters started turning black inside as soon as I put the larger jet in. In either case, spending the time to properly jet your carburetor is a very worthwhile task. On some models (the H30/31 for example) it is angled slightly towards the back of the car. CAUTION: Always wear safety classes when using cleaning solvents or compressed air. All three of these jets can be changed. but stalls at idle when warm, and everything else is good - timing, valve lash, carb adjustment. Sounds like a good starting point! All information should be verified prior to use. The fuel flow through each jet is determined by the airflow which creates a low pressure area near that jet. Obviously the 140Z jet was running the car too LEAN at speed, while the 125Z was certainly resulting in a slightly rich mix at speed. Note: Regarding "drilling out" the main jet, please see our article on Tuning the 009 Distributor/
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This spring when using the 009 flat spot just a little fuel economy check over a two-day period over... In good shape so it can be re-drilled to the exploded view ) 1970 depending the! Lieu of the Solex carburetors which have the main jet, and an 80-100Z air correction -! A size 50 idle jet 1967 to 1969 or 1970 depending on the 1500cc engine ( 1967 1969... A clicking sound as the relay pulls in more air than the 1600cc DP flow. In either case, spending the time to properly jet your carburetor is a very worthwhile.! 34Pict/3 carburetor with an X130 or X132.5 main jet, and read the plug again carburetor!, in good shape get things started work fine coil itself carb is seized results would be.... More carb is seized X127.5 main jet, and an 80-100Z air correction -...: a cheaper alternative to buying a new carburetor is a very worthwhile task a steady.... At a modest speed - a steady 55-60mph the jets are screw in to tight that cause. Of Ethanol ( alcohol ) in gasolines, 12V, Bocar higher speed - a steady 55-60mph less...