Pull it back tight (with the idle screw against the lowest step on the cam) and snug down the screw (takes three hands. Others might find that the 30 sized carburetor on a 1600cc engine works better with a larger X127.5 main jet. Rob's note regarding modern fuels: There are two major issues with modern fuels. If your solex 34 pict 3 starts and runs fine when cold. ANY SINGLE THING other than stock, Berg Semi-Hemi heads, 009 distributor, extractor exhaust, etc. Contrast the Main Jet of the VW 105-1 for the '67 Beetle which would be120. 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. vegas EMPI Performance Products Pict-3 34 Direct replacement for the original Solex 34PICT3 - comes with 70 Air Jet - 127.5 Main Jet - 55 Idle Jet SO-100 $ 28.62 Solex Pict-3 28/30/31/34 Rebuild kit G1134 $ 3.25 Gasket - Flange Gasket - ID 1.540 98-1288-B $ 189.95 . . The idle jet is normally a little larger when used with the heavy bodied Type 2 and Karmann Ghias - in a Bug you usually use a 55, for a Type 2 or Karmann Ghia use a 60 or 65this gives you a little more power at low and medium speeds. Note: There is no power jet on the 28 series carburettors or on the first 30 series carburettors, but later 30PICT/1s, and all 30PICT/2, 30PICT/3, 34PICT/3 or /4 and H30/31 carburettors have an Auxiliary or Power jet. Later versions of the Solex carburettor have the same body and thread as the idle jet close by, so don't confuse the two and interchange them or you will have a rich idle and lean top end. 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 . I haven't run enough through the tank to get a real idea about consumption yet, but since I don't notice any huge difference in performance I'll probably be going back to the X125 soon. Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts. Another jetting-related question - I modified my X120 main to near a X125-130, and kept my 137.5Z air correction jets. 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! 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. The larger size 65 idle jet helped the 30PICT/3 and H30/31 carburetors overcome the very lean main jet at idle and low speeds, and thus help to reduce the "bogging" problem. With the 1600cc engine, it's sucking harder at the top end so tends to run leaner. If the color of the deposit is tan or brown, you are running too lean and the main jet size should be increased. With the larger main jet, you might also need to consider a size 50 idle jet in lieu of the normal 55. If the fuel/air mixture is too lean, the engine will run very hot, stumble, and misfire -- and burnt valves can be the result. Actual product may differ in appearance. Carbs help Solex 32 34 Z2 Overclockers UK Forums. If you install a single carb on GL (34/3 PICT) always keep in mind the following: 1. So, I let it warm up, and set the timing to 32 degrees full advance. 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. 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). Then video is intended as an example.. I'd put my money in an SVDA distributor before I invested in rebuild and/or rejetting. The question is this -- my car is failing constantly especially when I throttle in slowly; again a new set of points, cables, sparks, etc. Use a steady throttle - minimum acceleration. (Adapted from John Connolly's article on How to Jet Your Carburetor. Using a new gasket, install the carburetor on the intake manifold flange. 2 of 2 people found the following review helpful. the size 65 power jet should work fine for those conditions. "Lean" means less fuel with the same amount of air, and of course "rich" is the opposite. SKU: 43-5040-7. Turn the ignition on (but do not start the engine). Locate the Volume Control Screw and the Bypass Screw on the left side of the carburetor. 34 PICT Carburetor Combination, Automatic Choke Discussion and Adjustment Procedure. But engines do differ a little, and the sizes above are "ball park" figures rather than definitive. The effect is clearly noticeable from 3000 RPM upwards (just under 60 mph), and probably a little lower than that. It's designed to counter the effect of the air correction jet, which starts to lean the mixture TOO much with higher airflows. 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. 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. Many thanks, John!). 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. Another question - The car runs terrible but it runs. The back one (pilot?) valve - idle cut off (30pict-2,3) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27. almost all the way to the top.-the idle 'cut off' solenoid clicks repeatedly when tested. I would stick with the 34 pict 3 carb with the dual port. Pull it back tight (with the idle screw against the lowest step on the cam) and snug down the screw (takes three hands. This distributor need MORE fuel (bigger jets) to work properly -- otherwise you will get a lot of hesitation (coughing/sputtering) when you accelerate (push the throttle). There is a trench or 'valley' across the bottom of the float bowl to the main jet on the other side. Main jet plug seal (15)
If it still seems hot, go to 127.5. We have had great results with these factory bench tested carburetors. Same with the carburetors in general, so adjustments become essential. It's important that you get it right. 34 PICT Carburetor Combination. Be careful pulling it out -- it's about an inch long. Brosol/Solex Idle Jets .40. It must be jetted differently for the different sized engines, so that fuel flow will match the airflow characteristics, and they usually arrive jetted way too lean - an emission thing. (Some of this material was adapted from John Connolly's article on How to Jet Your Carburetor.). You'd think the jet sizes would follow the capacity more closely, but they don't. such as, how do you know what mixture you are setting, and if you are running the car too lean and hot, or way too rich? 2-F7 emulsion tubes for the IDF. I couldn't find it in any book. Make your product selections based on the PRODUCT DESCRIPTION and OPTION INFORMATION presented in the detailed product listing. The air corrections I have are 125z, 170z and in the carburetor a 135z. NOT EVERYONE WANTS DUAL CARBS! Important note regarding the float valve in the Pierburg carburetor: The float valve in the Pierburg 34PICT/3 carburetor has a spring-loaded ball bearing in the end of the needle that impinges on the float. Immediate shipment of requested products is NOT guaranteed. 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. The pilot jet is normally left at 55 (most Solex carburetors use the same 55 pilot jet), but you could try a 60 if you can find one -- if the flat spot still remains with a 55. Brosol/Solex Idle Jets .50. $7.99 . The power jet is needed to correct a tendency for the air correction jet to work TOO well at max airflow - it leans the mixture off too much and the power jet corrects this. The exhaust system peashooters started turning black inside as soon as I put the larger jet in. To summarize: idle jets operate from idle to 2500-3000rpms or so. 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. 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. Use stock vacuum line from air-intake #4 for CDI control unit. 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.). We need to do some research regarding the adjustable main jet. The carburetor was a little "leaky" around the shafts. following diagram. The smaller jets WILL NOT work with the 009 distributor. Screw it in GENTLY until it bottoms. Soot will indicate the main jet is a little too large. Then tighten further according to the chart. Try the X125 main before you try the X127.5 -- I'm using a 30PICT/2 carburetor on my 1600cc DP engine, and it works fine with the X125. . The bigger jet will increase fuel consumption a bit, so the smaller increase is better if it works. You have to take the top off the carburetor to see it (careful taking this one out -- it's about an inch long and has the emulsion tube attached underneath). There should be a light smooth coating of carbon on the rim of the threaded part, and a colour change on the outer electrode of grey (at the tip) to black (where it attaches to the rim of the threaded part), with the change of colour on the corner of the bend. Then remove a spark plug and read it (see our Spark Plug Reading Guide). We have seen advice to the effect that both the main jet and the air correction jet (and maybe others) must be replaced with larger ones in the 34PICT/3 carburetor to compensate for the 009 "flat spot." Use as much advance on the 009 distributor as you can -- 32 degrees advanced at 3500 rpm rather than 30 or 28, so long as the engine doesn't detonate (ping). The 30 and H30/31 carburetors were designed primarily for the 1300-1600cc single port engines, but you can get slightly better performance with the larger carburetors on a 1200cc engine, but only if they are set to run properly with the smaller engine. No blue fumes, so the piston rings are well installed. "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. The main jet provides fuel from about 1500 rpm right up to maximum rpm. So you want to upgrade the engine, are willing to do an exhaust change, maybe some more displacement, but don't want dual carbs, right? 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. The air correction jet is also changeable. 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. Note: The manuals say that you should not remove the volume control screw, as it is set at the factory. Most carburetors come out of the box with a 55-60 idle jet. The power jet counters the leaner condition at higher rpms, richening the mixture back into balance again. Please only contact us by PHONE and leave a voicemail if you have been unable to reach us via email for some reason, OR if your situation (or tech question) is impossible to convey in writing. The fact that they receive power from a terminal on the coil has nothing to do with the coil itself. SOLEX 34 PICT 3 Carburetor Adjustment Procedures. 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 . Rob responded - Yes, that sounds like a rich mixture. The adjustable jet would work with any of the Solex carburetors which have the jet mounted horizontally inside the carburetor. We can only give a guide here, as engine age, type of fuel, carburetor wear, etc. This will have the main jet supplying the fuel, and read the plug again. Run about 100 miles and then look at the tail pipe. This carb is designed to remain compatible with SVDA distributors, and fits the stock air filter. Or should I open what I have or rob from a newer model? (The jets are made in 2.5 increments, so it goes X127.5, X130, X132.5, X135 etc. 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. NOTE-the Pilot Jet Valve may already have been replaced with the Brass #55 Idle Jet. Rob came back with a detailed response - The H30/31 is almost identical to the 30PICT/3 - it's a modern equivalent of the same carburetor, but has a fractionally larger throat for a higher airflow. Main jet size 127#, Pilot Jet size 55 # MPN: Replace For OEM part Numbers 113129031K . 2. Recommended sizes are given in this article. Solex Carb Spacer for Alternator, 30 PICT Carburetors, 00-3245- Every engine is different, so strongly consider getting our micro sized idle jets to really dial it in. The 30PICT/1 & 2 carburetors handle the 009 a little better than the 30PICT/3, H30/31 and the 34PICT/3. *** 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. See our Accelerator Cable Adjustment Procedure. Carburetors intended for the California market were jetted leaner for emissions reasons and may be harder to tune as a result - so you might find a size X122.5 main jet and size 140Z-170Z air correction jets. The main carburetor jets fit stock Brosol and Solex VW Carburetors as well as the EMPI stock replacement VW carburetors (28, 30 & 34PICT carburetors). Check the jets in the carburettor - if you have a vacuum distributor (you didn't say which sort you had), then the 34PICT/3 carburetor should have a 55 idle (right side of the carburetor. For a 1600cc dual port engine with any 30/31-sized carburetor and any vacuum distributor, the correct jets are idle size 55, main jet size X125 (just maybe X127.5 on some engines) and air correction jet size 125Z or X130 (with air correction jets - SMALLER mean richer, but only at higher speeds where they start to work). I've been running my '68 Bug with the X127.5 main jet in the smaller carburetor, and he's running a tad rich. Choke Adjustment Procedure, Float needle valve and gasket (4 & 5) (See note below. Some tests to help you determine proper jetting. [3] The Volume Control Screw is the smaller of the two adjusting screws. If there are any blockages or crud it would be worth giving the carburetor a complete cleaning. Status: Offline. i keep reading about the 'pilot jet'/'idle jet', where is that located on the 34 PICT 3? Note: Compare the new float valve with the old one. I have main jets: X117.5 and X127.5 and as far as I remember currently in the carburetor is a X125. 55 idle, 127.5 main. Some of the replacement carburetors (H30/31 and 30PICT/3 maybe???) Normally, shops stock them in round sizes of "5"s, like 50, 55, 60, etc. So how do you know which to use? We have vaguely heard of adjustable jets but have never seen one or had it described. Just make sure the hole size is correct for your engine size and distributor type (009 distributors need richer carburetor mixtures). Solex 4a1 Carburetor Manual Best Version AN INTRODUCTION TO THE SOLEX 4A1 CARBURETTER SUPPLEMENT USB STICK (TSD4320USB) Quantity: Available : Despatched in 1 - 3 Days. = Uses .0 Bypass: WEBER 34 ICT: Factory Sizes: Single Carb: Dual Carbs: AIR CORRECTION 1.60 N/A 1.60 EMULSION TUBE F-78 N/A MAIN . Article on How to jet your carburetor. ) OEM part Numbers.. Volkswagen Enthusiasts carburetor, and kept my 137.5Z air correction jet valve may already have been replaced with the main... 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Replace for OEM part Numbers 113129031K also need to do with the engine! Starts and runs fine when cold plug again intake manifold flange remove a spark plug read. To remain compatible with SVDA distributors, and fits the stock air filter a new gasket, install the was! X127.5, X130, X132.5, X135 etc 2 of 2 people found the following helpful! Power jet counters the leaner condition at higher rpms, richening the mixture back into balance.., go to 127.5 main jets: X117.5 and X127.5 and as far I! Sizes would follow the capacity more closely, but they do n't the air correction,. Well installed the timing to 32 degrees full advance Screw and the 34PICT/3 & 2 handle.