In other words, it's extremely crucial for in-town driving. 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. FreeShipping. The air correction jet starts leaning the mixture to bring it back into balance, but as the rpms (airflow) rises to near the maximum for that carburettor, the air correction jet works too well, running the engine lean. Then remove a spark plug and read it (see our Spark Plug Reading Guide). Idle Shut Off Valve, 34-3, 34-4, and 34 PDSIT 2/3 Carburetors, 049-129-412C Is the valve on the side of the carburetor that provides air to the idle circuit. Carburetor Reassembly You can find 57s, etc. Main jet should be around the 130-135 area. Air correction 75 to 125 and these are changed. Remove the brass plug with a hex head on the left of the carburetor -- bottom of the float bowl (all the fuel in the carburetor will rush out). Using a new gasket, install the carburetor on the intake manifold flange. Dave bought a Pierburg model 34PICT/3 carburetor from Aircooled.Net, and none of the jets had the sizes stamped on them. Note: The manuals say that you should not remove the volume control screw, as it is set at the factory. It's important that you get it right. Rob replaced the air correction jet with a 140Z, and at low-middle speeds there is no discernible effect. 1975 GL1000 Restored (sold) 1983 GL1100 Custom (sold . Others might find that the 30 sized carburetor on a 1600cc engine works better with a larger X127.5 main jet. The angled one (points slightly towards the rear of the car) is the idle jet. Be sure to check your engine's fuel pressure and ignition system. The 30 series carburetors have a 24mm throat, and the modern replacement H30/31 carburetor has a 25.5mm throat. for ICTs, you need a 57 or 60 idle jet; for IDAs, the idle jet you need will depend on whether your carb has 2 or 3 progression holes. If the color is rich grey, you're about right. -there is fuel in the 34 PICT 3 resevior. Basically, the emulsion tube changes the diameter and location of small holes in it's body. Where the early style carburettor has the idle cut-off solenoid on the RIGHT side of the carburettor, that solenoid sits in the back of the idle jet. PRODUCT INFORMATION: All information provided by Aircooled.Net (via website or email) is for USE AT YOUR OWN RISK. Each engine is a little different, but these jets will get you "in the ball park". "As we discuss elsewhere, if you are running an 009 centrifugal-advance distributor with a 34PICT carburetor, you can minimize the "flat spot" by installing a slightly larger main jet (up from X127.5 to X130 or X132.5 for example), setting the accelerator pump for maximim squirt, and maybe increasing the idle jet size from 55 to 60. The proprietor of Aircooled.Net thinks the main jet is a size X130, and the idle jet is size 50.) Pull it back tight (with the idle screw against the lowest step on the cam) and snug down the screw (takes three hands. The 1200cc engines usually used a X120 or X122.5 in the 28PICT carburetors, the 1300cc engines used either X122.5 or X125 in the 30PICT carburetors, the 1500cc engines usually used a X125, and the 1600cc engines usually need a X127.5 in either 30PICT, H30/31, or 34PICT, but MIGHT get away with an X125 in the smaller 30PICT and the H30/31. 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. Disconnect the electrical lead from the valve, then touch it to the connector again. Replacing the main jet in is super easy -- just put it in the hole in the side of the carburetor, then put the screw driver in after it and slide it along the 'valley' that runs across the bottom of the float bowl. Obviously it also fits all Dual Port Intake Manifolds, and we've had excellent results from these quality carburetors (Unlike the Chinese Copies!!!). Unsere Bestenliste Feb/2023 - Detaillierter Produktratgeber Die besten Vw aux in Bester Preis : Vergleichssieger. Jet-A-Vator. Solex, Kadron, Brosol, and Bocar Idle Jet, Micro Sized, Main Jet for Solex, Kadron, Brosol, and Bocar Carburetor (sold per EACH), Fuel Pump Gasket, Flange to Pump, Pack of 10, 113-127-313, VW Sedan & Bus Street Header, 1966-74 1300-1600cc Based Engines, Super Stock Intake Manifold, Dual Port Center Section, Fits 30, 30/31, and 34 PICT Carburetors, ACN Stocker Plus Dual Port Cylinder Heads, (L3 heads) 35 X 32mm Valves, PAIR, Rotary Electric Fuel Pump, 3.25 psi Low Pressure, 9mm Fuel Filter Inlet and 7.8mm Pump Outlet (Adaptable for VW 5mm/7mm hose use), Universal Fuel Filter (Lantern Style), 131-261-275A per EACH, Mechanical Fuel Pump, Upright Engine w/Alternator, 113-127-025G. Located in: Braunschweig, Germany. In some parts of the world, a 31PICT was used on 1300cc twin port engines from 1971 onwards (but not seen in the USA). If it seems a little rich at higher speeds (plugs sooty after a plug read) then try the 130Z air correction jet. The jets in Dave's 34 PICT/3 carburetor are - Main jet - X130; Idle jet - 55; Air correction jet - 80Z ~~~ Jetting With the Centrifugal-Advance 009 Distributor, The 009 centrifugal-advance distributor can not sense throttle position engine load, only engine revolutions, so it's not ideal in all circumstances, Changing the jetting in . (See our Automatic Choke Discussion and Adjustment Procedure.). The VW 105-1 Air Correction Jet would be 125z. Please only continue if you are prepared to be PATIENT. No blue fumes, so the piston rings are well installed. Reply to Phatman. What you are mainly looking for is the condition of the carburetor. It sounds like the jets you have in there are set for a lean running Bug (50 idle, 125 main and 135 air correction makes for slightly lean through the rpm range with the light bug body). In these later models, you can easily change the jet with a medium screwdriver either with the top of the carburetor removed or with the carburetor completely off the car. 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. So where an old VW required a 91 RON octane fuel, that is now equivalent to an 87 AKI fuel in the USA. The 30PICT/3 and the H30/31 carburetors came with size X112 main (super lean), size 65 idle, and size 125Z air correction jets, which made them very difficult to tune. With the 1600cc engine, it's sucking harder at the top end so tends to run leaner. The bigger jet will increase fuel consumption a bit, so the smaller increase is better if it works. If it takes 4 1/2 to 6 turns to peak, go up a size or (1/2 size if you. If it's not, the float bowl will overfill through the bowl vent down the throat of the carburetor, causing the fuel/air mixture to be WAY too rich - and of course the exhaust will spew out a lot of black smoke and the engine will not run. 34 pict 3 carburetor overhaul Jan 27 2023 web the proper float valve washer 4 must be used for the specific type of carburetor the 34 pict 3 carburetor uses the 0 5 mm 020 gasket a micrometer . 60 day return. Dave replaced the main, idle and air correction jets so he knew what he had. Please do NOT rely on PHOTOS while shopping as many of our products have selectable product options that may change the nature of the product being ordered compared to the representative photo. Solex 34 PICT 3 VW air cooled carburettor replacement; . So there is a HUGE difference in hole size compared to the main fuel jet. The air correction jet has to be the right size for the same reason. CAUTION: Brass tube type delivery tubes are a push-fit into the carburettor body and should not be removed or they can fail to grab again. Checking and adjusting cold idle speed =>page 22-53 Throttle valve positioner Free shipping for many products! Jet arrangement in bottom part of carburettor =>page 22-49 Idling cut-off valve . This carb is designed to remain compatible with SVDA distributors, and fits the stock air filter. I think the original idle jet was a 50, but the replacement jet orifices (orifii?) Turn the ignition on (but do not start the engine). It's possible to develop partial blockage in one or more jets. . Setting the idle screws (B): Tighten the screw until it touches the carburetor lever. The standard carburetor with standard jetting as originally furnished on your car is usually the most economical and dependable. almost all the way to the top.-the idle 'cut off' solenoid clicks repeatedly when tested. In the USA almost all gasoline has at least 10% Ethanol added, and in other countries SOME fuel has Ethanol added. Note: Compressed air is really best if you have it. 2 of 2 people found the following review helpful. I've been running my '68 Bug with the X127.5 main jet in the smaller carburetor, and he's running a tad rich. Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. low_light_craig. Once you have those two sorted, then try a faster run and from 60 try flooring the throttle - if you get a good smooth response the air correction jet should be OK, but if it tends to stumble a little or feel breathless, then either the main jet is a little small or the air correction jet is a little large. See details. Our test motor is a 1600cc with a 34 PICT carb and a 20% plate which has had a 28% improvement in mileage, but also runs smoother. AU $0.86 (approx 0.48)Australia Post International Standard. 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). Note: You will notice that the holes flange on the intake manifold which the carburetor rests on is are slotted. That's how I got mine! Note: A cheaper alternative to buying a new carburetor is to have the carburetor rebushed. Make sure this fits by entering your model number. It is located at about 11 o'clock to the larger idle jet, underneath a small brass screw-in plug. With lean jetting you are likely to need more throttle and have slightly worse fuel economy - using the slightly richer settings I'd suggested above will give you a little more power and a cooler running engine, so hopefully fuel economy will improve a little, but don't expect too much - fuel economy with the heavy Type 2 body is never very good. In a VW Beetle, if you make the main jet too small, the car runs lean and this makes the engine run hotter. 34 PICT-3 carb, SOLEX 34MM ; Fitment: Carburetor Fits For any 1600cc VW Air cooled Type 1 engines,such as: 1971-1979 Volkswagen Beetle, 1971-1979 Volkswagen Super Beetle, 1973-1974 Volkswagen Thing, 1971-1974 Volkswagen Karmann Ghia, 1967-1973 Volkswagen . Pull it back tight (with the idle screw against the lowest step on the cam) and snug down the screw (takes three hands. We did a run of these, but due to a limited supply of the quality Bocar 34-3 carbs, we do not know how long we'll have these carburetors! If it is dead black, you are running too rich -- so a decrease in the size of the main jet is indicated. For example, a 40 IDF would need a 40 x 1.25 = 50 idle jet. 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. As I indicated above, the H30/31 carburetor is often delivered with a very lean main jet (an emissions thing), so it needs the richer size 65 idle jet to stop the car stalling at lower rpms. If you do not hear this clicking sound, it's time to replace the idle cut-off valve. 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. Dispatched today if paid within 1 hr 21 mins See details. They might be available individually or in a set. 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.). If you have a 009 distributor (no vacuum canister on the side), the main jet should be about X130 or X132.5 and the air correction jet may be a little larger than normal -- 110Z or so -- to compensate for the dizzy's flat spot. (You must log in or sign up to reply here. I have lowered the fuel pressure down to 2.5 psi and checked the float bowl fuel height. Another well respected and active VW carburettor rebuilder is TIM. The fuel flow through each jet is determined by the airflow which creates a low pressure area near that jet. 55 idle, 127.5 main. On the subject of ongoing jet changes, I re-installed the 60 idle jets (1600cc weber 34 ICT blah blah) and lo & behold, the light throttle and off . If you have a 009 (centrifugal advance) distributor, you may find that the spark plugs still seem a little dry/burnt looking at medium speeds , or the car lacks acceleration in the mid ranges. the size 65 power jet should work fine for those conditions. With the richer 125Z air correction jet I got 11.8 km/l (27.9mpg) -- no real difference. Peugeot 205 Manual . Takes less than five minutes, then another five to put the new one in and put the top back on the carburetor. SKU: 43-5040-7. IDLE JET .55 .65 .60 (d) VENTURII 40mm . Again, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at Aircooled.Net. Be careful pulling it out -- it's about an inch long. May 13, 2014 @ 5:57 am. If that's the case you need to make sure the idle cut-off solenoid is working (a nice click when you touch the wire on the connector) and that the idle jet (which it screws into) is not blocked. following diagram. The back one (pilot?) I'd put my money in an SVDA distributor before I invested in rebuild and/or rejetting. Torque the retaining nuts on the bolts protruding through the intake manifold flange to 14 ft-lb (just a snug-and-a-tug them up tight with your 13mm box-end wrench/ring spanner). body (5). VW set up a vacuum advance distributor, and the stock jetting in a 34 pict 3 for a 100% stock engine. On older/2 carburetors it has the idle cut off solenoid screwed into the back of it. 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At least 10 % Ethanol in them ( E85 ) money in an SVDA distributor before i invested in and/or! Series carburetors have a 24mm throat, and at low-middle speeds there is a size,... Orifii? too rich -- so a decrease in the ball park '' jet will fuel! Clicking sound, it 's about an inch long all gasoline has at least 10 % Ethanol.! To buying a new gasket, install the carburetor carburetor rebushed Die VW! 'S fuel pressure down to 2.5 psi and checked the float bowl height!
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