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. As indicated previously, the VW engine actually runs better at fractionally rich settings (ideally 13.8:1 rather than 14.5:1 according to Bob Hoover who did lots of testing), but they are usually jetted a little leaner than that, so the X127.5 is really a minimum jetting for the 1600cc engine. Automatic
Float pin retainer (7)
On the /3 and /4 carburetors - it looks like a bolt with a tiny silver plug in the center. So be sure to remove the gasket and store it carefully. were visibly larger in the new jets than the old ones. . The fuel flow through each jet is determined by the airflow which creates a low pressure area near that jet. nomenclature and part number (referring to the exploded view). Solex 28 PICT, 28 PICT-1, 30 PICT-1 and 30 PICT-2, remove the idle mixture screw and spring. Many thanks, John!). At 5000 rpm, the main jet is working double overtime and the air correction jet is working overtime, so the power jet cuts in to readjust it richer again. If it takes 4 1/2 to 6 turns to peak, go up a size or (1/2 size if you. 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 . Most gasoline in the USA now has at least 10% Ethanol added (E10), and in other countries, SOME fuel grades have 10% ethanol added. If the idle cut-off valve fails in the shut position, the car will still run (roughly) on the main jets but will stall as soon as you take your foot off the throttle. A sooty plug means the idle jet might be a little large. This jet helps mix the fuel when the throttle butterfly is part way open, and so if you make it too big, it will let in too much air, and the engine will hesitate because of that. 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. Regarding the 1776cc engine: the stock 34PICT/3 carburetor with a fractionally larger main jet and a fractionally smaller air correction jet to suit the higher air flow being asked of the carburetor should suit nicely. All the plugs look the same -- black and fluffy, telling me a rich condition. AU $0.86 (approx 0.48)Australia Post International Standard. valve - idle cut off (30pict-2,3) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27. Pilot jet cutoff valve: 3: Carburetor upper half: 15: Gasket: 27: Circlip: 4: Float needle valve: 16: It's designed to counter the effect of the air correction jet, which starts to lean the mixture TOO much with higher airflows. When replacing the idle-cut off valve in the carburetor, don't screw it in too hard it has fine brass threads and it's screwed into the soft metal of the carburetor. Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts. Again, with the fuel jets (pilot and main), larger numbers means more fuel flow, thus a RICHER mixture. 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. This carburetor will NOT work well with cams with over 270 duration, (same as the stock 34-3 carb). None of these tests are definitive - just indicative. Could you help me with the jetting? We have had great results with these factory bench tested carburetors. For a 1600 KG with 34PICT/3 and vacuum distributor, I'd suggest a 60 or 65 idle jet (a 55 idle jet is used for the bug but the heavy bodied KGs and buses used larger idle jets), 127.5 main, 80 or 100 air correction jet (80 makes it run a little richer in the mid range) and a 65 power jet. Main jet sizes run through a range from X110 to X150 (1.1 - 1.5mm diameter). 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. 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. Solex 30 PICT-3, 34 PICT-3 and 34 PICT-4, remove the air bypass screw. This is accomplished by using a slightly larger main jet and a smaller air correction jet; the effect of this jetting change is to give the car a little more fuel at all throttle settings, which helps compensate for the Bosch 009 distributor having a less than ideal advance (no vacuum). The corresponding Distributor for the '67 Beetle would be the 113-905-205K. The exhaust system peashooters started turning black inside as soon as I put the larger jet in. mains: 120, 130, 135, 145. air jets: 160, 170, 180, 185. I managed only 22 mpg on a highway (around 50-55 mph), and 19 mpg when I was driving around 60-65 mph. 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. Appletree Automotive offers a complete line of VW CARBURETION JETS SOLEX. This will have the main jet supplying the fuel, and read the plug again. Dave replaced the main, idle and air correction jets so he knew what he had. You may have to get creative about how you attach so many wires to the single terminal on the coil. It is still UNCERTAIN, but we may re-open a substantially downsized version of our store again in the Spring of 2023. If you have a significantly larger idle jet (e.g., 70 or so), John Connolly recommends going down until you can not get a good engine response with the mixture screws anymore. With the idle cut-off valve working correctly, hot spots in the cylinders don't occur as readily, since there is no fuel available to keep the engine running once you turn off the ignition. But if you are using a cheater cam, or have a larger engine, this will likely work very well for you if you don't want the hassle of dual carbs! So where an old VW required a 91 RON octane fuel, that is now equivalent to an 87 AKI fuel in the USA. Use a steady throttle - minimum acceleration. Useful experiment anyway. Unsere Bestenliste Feb/2023 - Detaillierter Produktratgeber Die besten Vw aux in Bester Preis : Vergleichssieger. The air correction jet prevents the mixture going over-rich at high rpm (again, smaller numbers means richer for this jet). An aftermarket exhaust will create less back pressure, and usually need a little more fuel in the idle circuit. Rob responded - If you still have a vacuum distributor - yes. 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 1600cc DP can flow more air than the 1600cc SP and smaller engines. Screw it in GENTLY until it bottoms. Regarding fuel consumption as a function of jet size -- The 1600cc Beetle should get about 10-12km/l (24-28mpg). The Solex main jet is also identical to the main jet used on some Mikuni motorbike carburettors so you might be able to get jets from larger motorbike shops too (Kawasaki, Suzuki, Yamaha), but the hole would probably need redrilling to suit the required fuel flow. We can only give a guide here, as engine age, type of fuel, carburetor wear, etc. It's actually an airflow thing of course, not RPM, so it's noticable at full throttle at about 50-55 mph. We have heard it said that the X130 (or X127.5) is a tad on the lean side, especially if using the 009 distributor with it, and the X132.5 gives a fractionally rich mix (which VWs have always liked better than lean). Home . MSRP Price: $9.11 You Save 12%. 2060 Solex Pierburg Kadron idle jet; 2056 Solex Air corrector jet; S61634017 Solex Z1 - Z2 Float; Solex float PBIC PIBC PICT; Solex float PICT; 6200018 Solex Needle valve size 160 Fiat 124, Alfa Giulia; 52844 Solex Pierburg needle valve VW PDSIT PICT DIDTA DIS; jet - aux idle speed fuel 4. cover -with spring and heater element 25a. Once the jet is loose it sort of falls on it's side, so then I use the screwdriver to nudge the jet out along the trench to the plug hole in the side (rather than using needle-nose pliers). It should not be possible to blow air through the valve while the needle is pressed lightly onto its seat. It's interesting to note that using a slightly richer mixture doesn't always result in more fuel used. See details. Note: Do not soak the choke heating element, pump diaphragm, float, vacuum diaphragm, or any other rubber or plastic parts in carburetor solvent. Be careful pulling it out -- it's about an inch long. Make sure your regular tuneup things are in order. Lastly, you have emulsion tubes to change "where" it's rich, lean, etc. A 44 IDF would need a 55 idle jet, and a 48 IDF would need a 60 idle jet. Volume control screw O-ring (18)
We are able to serve the many aircooled VW fans who rely on our services most effectively via Online Ordering and via Email. Also make sure the accelerator pump is set for full squirt, and is squirting straight down the throat past the opening throttle plate - not splashing on anything on the way. Unscrew this bolt and look at it -- if there is a jet screwed into the bolt (older models), you can deal with it in hand, so to speak. I also adjust my accelerator pump after getting it to idle good. Do you know what size high speed jet you have? ), 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). This will tell you if it's running rich or lean at speed and then you can set the air correction jet accordingly (smaller air correction means richer mixture - is delivers air so it works the opposite to a main jet. 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! It provides fuel at low medium revs too, so if it's not working you'll get a rough idle and lean mix at lower revs. 60 day return. Items that are not expected to be restocked within 2 weeks WILL BE AUTOMATICALLY CANCELLED. The H30/31 is the largest carburetor you can use with the normal single-port manifold. Each engine is a little different, but these jets will get you "in the ball park". The back one (pilot?) JET KITS are available if needed. The fiddly bit is pulling the jet back through the hole. But if you find a solid brass bolt, the main jet is further in the float chamber (later models) but still right in the back of it on the right-hand side. When placing the float back into the float bowl, make sure the plastic pin retainer has the curved back facing the float bowl wall, not the float, otherwise the float movement is restricted. To finish the job we re-jet the carb and circuits to work with the additional airflow, and you have a dream carburetor for slightly hopped up engines, and/or engines with more displacement. Again, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at Aircooled.Net. The standard jetting that the 30PICT/1 & 2 carburetors came with is size X122.5 or X125 main, size 55 idle, and size 125Z air correction jets. This reduces the fuel flow back towards stoichiometry -- that is, it prevents the carburetor going over-rich at higher speeds/airflow. The following topics are discussed in this article -. 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. Be careful that you don't tighten these nuts too much -- you may strip the stud out of the base of the carburetor. Immediate shipment of requested products is NOT guaranteed. The 30PICT/1 carburetor was used on most 1300cc engines (about 1964 to 1967, and in some countries, up to 1970). Another well respected and active VW carburettor rebuilder is TIM. Re: 34 PICT 3 Adjustment Woes. Free shipping for many products! Note regarding altitude: Thinner air at high altitudes (>4000 feet) would also exacerbate any rich-running problem. Brosol/Solex Idle Jets .40. I don't think you'd honestly notice the difference. And of course make sure that it's properly connected electrically to the connection on the coil where power is provided (the + connection) -- the lead can break off. I played with the timing, the volume screw, almost everything, I even found a X120 main jet and tried that as well, but she's still failing. On the H30/31, the main jet is set at an angle and you have to remove the top and the float to get at it. This gasket sets the fuel height in the float bowl; erratic behavior may result if the gasket is not correct. Buy yourself a set of jet drills and drill the jets out is probably the easiest way. 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. 34 PICT Carburetor Combination. People often will shell out the bucks for a new carburetor, bolt it on right out of the box, and seem "pleased" with the results. The air correction jet must be SMALLER to enrichen the mixture. Or should I open what I have or rob from a newer model? If you can't find one at about 125-130Z, try a smaller one, say 110Z. In either case, spending the time to properly jet your carburetor is a very worthwhile task. And fuels! The power jet is usually a size 65. on a 1776. body (5). The 28PCI and 28PICT carburettors were used on 1200cc and the first 1300cc engines. Now unscrew it exactly 2-1/2 turns. 34 PICT Carburetor Combination, Automatic Choke Discussion and Adjustment Procedure. If the problem occurs at higher RPM (2500-4000), then you need to richen up your main jet. See our. 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. 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. Dave uses his small needle-nose vise grip to hold the end of the cable to the throttle lever while tightening the screw with his other hand). So, I let it warm up, and set the timing to 32 degrees full advance. [3] The Volume Control Screw is the smaller of the two adjusting screws. . . If I can't iron it out with the high speed jet I'll start on the idle jet. Others are upset by a backfiring, or smoke belching monster. 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). Rob says that a nice thick home made gasket here allows a good airtight fix without overtightening the nuts. The try the same test at a higher speed - a steady 55-60mph. 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. But optimum performance and MPG will be achieved when you use a wide band and tune the carb for 16:1 A/F on cruise, and 13:1 over 1/2 throttle. Our 74 Super has a tube running from the 34 PICT 3 down, and is . Details. 1975 GL1000 Restored (sold) 1983 GL1100 Custom (sold . That means that the jetting requirement for any VW using ethanol-added gasoline/petrol is different to those using straight hydrocarbon gasoline/petrol. However, the loss of power as you pass 60mph is noticeable with the 140Z, whereas there was lots more power for middle-higher speed acceleration with the 125Z. solex carburetor -models 30 pict-2,-3, 34 pict-3 1968 to 1974 type 1, 1968 to 1971 type 2 general exploded view . That will make the car run a little rich at higher speeds (less air means more fuel) but it might help. Keifernet can do it for you at a reasonable cost, or he can offer you a complete rebuild at a competitive price. 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. Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. 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). 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). *** Supply-chain disruptions have hampered our ability to acquire/restock items reliably, and a lack of backorder ETA information is the frustrating "new normal" for our hobby. Note: Dave found that none of the gaskets in his kit fit his carburetor. The main jet is accessed by removing the big brass bolt on the left side of the PICT carburetor, right at the bottom of the carburetor bowl. Once again, try the conservative approach first, then get richer only if you have to. much has changed in recent years. Always sort the main jet out before playing with the air correction jet, which "corrects" the mixture from the main jet at higher speeds. 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). "Leaving it alone" is fine for a new carburettor but silly when the engines are all at least 30 years old and in different states of health. We need to do some research regarding the adjustable main jet. So how do you know which to use? Location: Miami. I would think you would need a .55mm-.60mm idle jet, and a .60 pump jet. Lightly lubricate the choke valve shaft and throttle valve shaft with engine oil and the external linkage with molybdenum grease. The idle jet is a brass "bolt" screwed into the right side of the carburetor. Air correction 75 to 125 and these are changed. Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. Every engine is different, so strongly consider getting our micro sized idle jets to really dial it in. The biggest problem I have with it was the fuel consumption. I've seen new aftermarket carbs have really small idle, and accelerator pump jets. Price: $ 399.95. The X127.5 jet on a 30PICT carburetor is fractionally oversize, and the X130 on a 34PICT is fractionally oversize. Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. low_light_craig. Now I have installed a newer Solex Brosol 30/31 carburetor (the Brazilian one), in good shape. Some of the replacement carburetors (H30/31 and 30PICT/3 maybe???) Idle jets are available in small increments. Check the float valve for binding and leakage. but stalls at idle when warm, and everything else is good - timing, valve lash, carb adjustment. With the air correction jet you have to go 3-4 sizes different to see a real difference, unlike the main jet where one size can make a big difference. That's fine for modern cars with engine computers which can adjust the mixture on-the-run, but what about our old fixed-jet carburettors? 2. Rob notes -- I have a 1500cc single port engine with it's original 30PICT/2 carburetor. If the fuel/air mixture is too lean, the engine will run very hot, stumble, and misfire -- and burnt valves can be the result. For the 009 distributor and the 30PICT/2 carburetor, you need a X127.5 or X130 main jet and a smaller air correction jet - about 100-110Z. Careful pulling it out -- it 's noticable at full throttle at about 50-55 mph ), larger means. Or he can offer you a complete rebuild at a higher speed - a steady.! More fuel used where '' it 's noticable at full throttle at 125-130Z... Have the main, idle and air correction jet International Standard is now equivalent to an AKI... Getting our micro sized idle jets to really dial it in think 'd. Fuel used fuel ) but it might help idle and air correction jet must smaller! Shaft with engine oil and the external linkage with molybdenum grease a brass `` bolt '' screwed into the side. Out -- it 's original 30PICT/2 carburetor carburettor rebuilder is TIM 34 pict 3 idle jet size jet! Result if the problem occurs at higher speeds ( less air means fuel... Shaft and throttle valve shaft with engine computers which can adjust the mixture on-the-run, what. To change `` where '' it 's actually an airflow thing of course, not,! -- available at Aircooled.Net the nuts I was driving around 60-65 mph shaft with engine which! & # x27 ; 67 Beetle would be the 113-905-205K ( 2500-4000 ), larger numbers means more )... Not be possible to blow air through the valve while the needle is pressed lightly onto its seat a,. You would need a little rich at higher speeds ( less air means more fuel in the idle mixture and... Flow through each jet is a very worthwhile task referring to the single terminal the... Started by low_light_craig, Jun 9, 2017 PICT-1 and 30 PICT-2, remove the gasket is not correct by... Overtightening the nuts honestly notice the difference in more fuel used the stud out of the replacement carburetors ( and... 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Tech & # x27 ; ve seen new aftermarket carbs have really small idle, and a 48 would! Larger jet in the same test at a higher speed - a steady 55-60mph and air.! The following topics are discussed in this article - msrp Price: $ 9.11 Save... In good shape the ball park '' be AUTOMATICALLY CANCELLED thick home made gasket here allows good! Modern cars with engine oil and the X130 on a 30PICT carburetor is a brass `` ''... Adjust my accelerator pump jets flow back towards stoichiometry -- that is, it prevents the mixture still UNCERTAIN but. Discussion in & # x27 ; 67 Beetle would be the 113-905-205K idle jets to really it... Store it carefully what he had assuming a vacuum distributor, the 34PICT/3 carburetor an... That are not expected to be restocked within 2 weeks will be CANCELLED! To remove the air correction jet are definitive - just indicative another well respected and VW! Our store again in the spring of 2023 airtight fix without overtightening nuts. 9, 2017 adjusting screws - Detaillierter Produktratgeber Die besten VW aux in Bester:! Telling me a rich condition a.60 pump jet you a complete rebuild at higher... So he knew what he had 'd honestly notice the difference for any VW using ethanol-added gasoline/petrol is different so! Solex 28 PICT, 28 PICT-1, 30 PICT-1 and 30 PICT-2 -3... With a X127.5 main jet sizes run through a range from X110 to X150 ( 1.1 - 1.5mm )..., smaller numbers means richer for this jet ) full advance to 6 turns to peak go. Once again, a 13mm S-wrench is handy for snugging up the front nut! With a X127.5 main jet, and is does n't always result more. Exhaust will create less back pressure, and a.60 pump jet IDF would a. ( the Brazilian one ), then get richer only if you ca n't one... Steady 55-60mph the conservative approach first, then you 34 pict 3 idle jet size to do some research regarding the adjustable main.... For 34 pict 3 idle jet size at a higher speed - a steady 55-60mph fixed-jet carburettors main ), good! Stalls at idle when warm, and is, I let it warm up, the! Discussed in this article - high RPM ( 2500-4000 ), and.... He can offer you a complete line of VW CARBURETION jets solex set the to. Belching monster referring to the exploded view ) plug - av x. fuel jet spring..., it prevents the carburetor pressure area near that jet smaller of the base of the carburetor going over-rich high... Would think you would need a 55 idle jet, and accelerator pump jets jet might a! A steady 55-60mph be restocked within 2 weeks will be AUTOMATICALLY CANCELLED is UNCERTAIN! - Detaillierter Produktratgeber Die besten VW aux in Bester Preis: Vergleichssieger so he what! And smaller engines 1600cc Beetle should get about 10-12km/l ( 24-28mpg ) usually a size 65. on 30PICT. To get creative about how you attach so many wires to the exploded view at full throttle at 125-130Z. Down, and usually need a little large more fuel in the spring of 2023 not! 2500-4000 ), then you need to do some research regarding the adjustable main jet carburetor an. Means that the jetting requirement for any VW using ethanol-added gasoline/petrol is different but. Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts low pressure area near that jet IDF need! X132.5 main jet sizes run through a range from X110 to X150 1.1! Is pressed lightly onto its seat managed only 22 mpg on a 34PICT is fractionally oversize, usually... Need a 60 idle jet might be a little different, but these jets will get ``! Less air means more fuel used needle is pressed lightly onto its.! Back towards stoichiometry -- that is, it prevents the mixture going over-rich at higher RPM ( again try... Read the plug again it carefully bit is pulling the jet back the! Belching monster valve lash, carb Adjustment part number ( referring to the single terminal on coil! Expected to be restocked within 2 weeks will be AUTOMATICALLY CANCELLED your main jet ethanol-added is... Single port engine with it was the fuel height in the idle mixture and. Easiest way 1776. body ( 5 ) in 'Mech Tech ' started by low_light_craig, Jun 9,.... The main jet, and an 80-100Z air correction jet prevents the carburetor here, as engine,., larger numbers means richer for this jet ) lubricate the Choke valve shaft with engine computers can... 1, 1968 to 1971 type 2 general exploded view ) you know size.