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. 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). The X127.5 jet on a 30PICT carburetor is fractionally oversize, and the X130 on a 34PICT is fractionally oversize. Leaks would certainly be an issue - I don't know how the threaded part would be sealed. to the back of the engine, in an angle) is a: g f 50 and the other: g f 50. With the larger main jet, you might also need to consider a size 50 idle jet in lieu of the normal 55. You might want to drop a pilot jet size. Size 24 MB File Type PDF File Get free Mikuni Solex Service Manual Solex . The Power Fuel System Dispensing Nozzle for the VW 105-1 would be 0.50 with no check ball. 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 . All the plugs look the same -- black and fluffy, telling me a rich condition. The color of the ceramic part of the spark plugs (the part that's been in the engine) tells the same story -- white for lean, brown for right and black for rich. Rob likes to make his own paper gaskets - most auto stores will sell you sheets of gasket paper in various thicknesses. Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts. 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. This is so you can move the carburetor back and forth a bit (front-to-back) to assure that the accelerator pump linkage on the right side of the careburetor clears both the fan shroud at the front and the alternator body at the back. If you don't have a compressor, talk to Santa Claus! Jet-A-Vator. vegas 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. If you can't find one at about 125-130Z, try a smaller one, say 110Z. 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. We have vaguely heard of adjustable jets but have never seen one or had it described. 21.00 (Excl VAT) 25.20 (Incl . [3] The Volume Control Screw is the smaller of the two adjusting screws. Make sure this fits by entering your model number. The use of VW, Volkswagen and any model names and numbers is for the sole purpose of description of parts application. 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 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. Thus a size 55 idle jet is 0.55mm, size 125 is 1.25mm, etc. The UK ones I've stripped have been fitted with: Southern Carburettors or Eurocarb will sell you some. The 34PICT carburetor usually comes with a 60Z air correction jet, and we have seen them as big as 170Z. Remove the top of the carburetor (five screws, the choke wire and the throttle spring) and you can see it between the float bowl and the main throat. If you are using a 009 distributor with a 30PICT carburetor on a 1600 cc DP manifold, the main jet should be X130 or X132.5 and the air correction reduced to about 100Z. So, I let it warm up, and set the timing to 32 degrees full advance. Go ahead and remove it -- after 30 years it will have been moved several times already. So there is a HUGE difference in hole size compared to the main fuel jet. 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. Solex 34 pict 3 jet size. 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? Now unscrew it exactly 2-1/2 turns. 3. 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.). Reassembly of the carburetor is essentially the reverse order of disassembly, giving special attention to the special instructions below. JET KITS are available if needed. Be sure to check your engine's fuel pressure and ignition system. But when easing the car up to 60-65 mph on part throttle, it's hardly noticeable. Another well respected and active VW carburettor rebuilder is TIM. 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. Screw it in GENTLY until it bottoms. See our Accelerator Cable Adjustment Procedure. This reduces the fuel flow back towards stoichiometry -- that is, it prevents the carburetor going over-rich at higher speeds/airflow. . Could you help me with the jetting? The carburetor was a little "leaky" around the shafts. To summarize: idle jets operate from idle to 2500-3000rpms or so. 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 effect is clearly noticeable from 3000 RPM upwards (just under 60 mph), and probably a little lower than that. Air correction jets are harder to find. Located in: Braunschweig, Germany. 737-144. jet - aux idle speed fuel 4. cover -with spring and heater element 25a. 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. 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. 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. 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. All this indicates a good mixture and correct heat range. I tested the operation of the vacuum advance / retard functions of the distributor by sucking on the hoses with the engine running and timing light on . If you're still looking lean, go to a 132.5. 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! As these plates restrict air flow, there is less vacuum to . = 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 . The sizes are stamped in tiny numbers on the heads of each jet. A loss of power is the result -- about 58hp instead of 60hp. There is a trench or 'valley' across the bottom of the float bowl to the main jet on the other side. can find them - rare!). The power jet counters the leaner condition at higher rpms, richening the mixture back into balance again. The standard jetting for a 34PICT/3 carburetor with vacuum distributor is about size 55 idle, size X127.5 main, and size 100Z-120Z air correction jets. 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; Venturi Size. ; Replace Part Number: 98-1289-B, 113129031K.Dual Port Manifold only, Not for single port. If the color of the deposit is tan or brown, you are running too lean and the main jet size should be increased. and 34-3 carb. for IDFs, make the idle jet 1.25 the size of the throttle body. 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. There is a lengthy article on our site regarding fuels, detonation, Ethanol, and octane numbers as they relate to the VW engine Fuels for the VW engine. 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. What you are mainly looking for is the condition of the carburetor. I have EMPI 34 pict 3 on GL1100 55 jet 130 jet idles 1000-1100. Main jet should be around the 130-135 area. The 1600cc DP can flow more air than the 1600cc SP and smaller engines. The back one (pilot?) Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile In the boxes of parts was a new manifold for the 34 Pict 3 carb. if you look around to really get it right on! The The selection of main gas and air correction jets is determined by venturi size. Sent from my SM-G930F using Tapatalk 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. 737-240. PRICES are subject to change without obligation. If you look at the two jets you can see that the (angled) idle jet sits in a protrusion (channel) which continues downwards under the jet, towards the idle and transfer ports in the throat near the butterfly. This will result in most of the fuel running through the idle jet - it supplies some fuel up to about 2500rpm. The exhaust system peashooters started turning black inside as soon as I put the larger jet in. 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. In this video I share with you the Carburetor Idle setting; step by step for my 1971 VW super beetle 34 PICT - 3 Carb. Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. Main jet plug seal (15) following diagram. I managed only 22 mpg on a highway (around 50-55 mph), and 19 mpg when I was driving around 60-65 mph. This helped a lot. I'd avoid Chinese stuff on eBay. The 34PICT/3 carburetor is usually used on 1600cc or larger engines. With the richer 125Z air correction jet I got 11.8 km/l (27.9mpg) -- no real difference. Disconnect the electrical lead from the valve, then touch it to the connector again. have the jet set at an upward angle inside the trough at the bottom of the carburetor, and so it wouldn't work with them. Jetting With the Centrifugal-Advance (009) Distributor, Tuning the 009 Distributor/ 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. The bigger jet will increase fuel consumption a bit, so the smaller increase is better if it works. If you have a proper vacuum distributor, it might be possible to make the main jet a little bit smaller (X125 is the next size down from X127.5), but this will not make very much difference in the fuel consumption. If it's working, you'll hear a clicking sound as the relay pulls in. Following are the jet and other specifications for the 34PICT/3 carburetor -, Accelerator Pump Feed: 1.3 - 1.6cc/stroke, Fuel Pump Delivery Pressure (max): 3 - 5 psi, Delivery Capacity (min): 400cc/min @ 4000 rpm, The jets in Dave's 34 PICT/3 carburetor are -. 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. 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. The H30/31 is the largest carburetor you can use with the normal single-port manifold. If the valve sticks in the open position, the idle fuel circuit will remain open, so if the engine is still turning it will still draw fuel through the idle jet, resulting in running on if there is a hot spot in one or more cylinders. The 30PICT/2 was used on the 1500cc engine (1967 to 1969 or 1970 depending on the country). As we learn more, we will include it here. 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. AU $0.86 (approx 0.48)Australia Post International Standard. 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. Try to use the leanest main jet you can -- too rich will only result in the cylinder oil film being diluted more, and this means higher cylinder wear. Rob responded - I can buy main jets "over the counter" at my local VW shop here in Australia. 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. They are cheap enough. The VW engine actually runs better at fractionally rich settings (ideally 13.8:1 rather than 14.5:1 according to Bob Hoover). Rebuild. You'd think the jet sizes would follow the capacity more closely, but they don't. "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. Great for that SLEEPER LOOK! On later carburettors which have the cut-off solenoid in the left side, the idle jet and the power jet are similar looking jets on the right side. 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). ), 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). $7.99 . (Adapted from John Connolly's article on How to Jet Your Carburetor. This will have the main jet supplying the fuel, and read the plug again. Rob replaced the air correction jet with a 140Z, and at low-middle speeds there is no discernible effect. 2 of 2 people found the following review helpful. The main carburetor jets fit stock Brosol and Solex VW Carburetors as well as the EMPI stock replacement VW carburetors (28, 30 & 34PICT carburetors). Jet cleaning; Fast idle adjustment; Volume control screw initial adjustment; Idle . 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. We are a "lean-staffed" small business and email care is how we are able to best take care of your aircooled parts needs! 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. SKU: 43-5050-7. 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. It's interesting to note that using a slightly richer mixture doesn't always result in more fuel used. Choke vacuum diaphragm (38) The carburetor has a 55 idle, X125 main and 125 air correction jet. Try the X130 main jet first, then work upward to the X140 (maximum) if the problem still persists. It's actually an airflow thing of course, not RPM, so it's noticable at full throttle at about 50-55 mph. No blue fumes, so the piston rings are well installed. I have checked my idle timing with the vacuum line disconnected and plugged, also checked high idle (5 @ Idle & 32 @ High Idle). Rob notes -- I have a 1500cc single port engine with it's original 30PICT/2 carburetor. We can only give a guide here, as engine age, type of fuel, carburetor wear, etc. Someone wrote - I was advised to use a X125 main jet and 130Z air correction jet in my carburetor. Any auto supply store can sell you a little T-shaped adaptor that will fit on the terminal, with three "wings" (if you will) to which the three black wires can be attached. Which one is which one? There is a Mexican Solex 30 Pict-1 replacement Carburetor. None of these tests are definitive - just indicative. Rob's note: When removing the main jet, I use a small glass jar (pickle or baby-food jar) to catch the fuel from the brass plug - I hardly spilled a drop (I just allowed the plug to fall in to the jar), and used the fuel to refill the float bowl later. much has changed in recent years. Milease has increased by 90 miles per tank. Once all together, retune the carbs (mixture and idle speeds) as per standard VW tuning methods. Main jet sizes run through a range from X110 to X150 (1.1 - 1.5mm diameter). I also have a stock carb rack but it appears to have water damage and one or more carb is seized. The extra advance helps reduce the 009 flat spot just a little. These are setup for 12V electrics, and include the idle shut off valve. Some of you may be using this Carburetor. Turn the ignition on (but do not start the engine). The main jets also fit EMPI and Brosal Kadron 40/44EIS Carburetors. Carburetor Removal Same with the carburetors in general, so adjustments become essential. 34 PICT Carburetor Combination. Others might find that the 30 sized carburetor on a 1600cc engine works better with a larger X127.5 main jet. Nomenclature Note: The main jet feeds fuel, so larger numbers mean richer mixtures, but air correction jets feed AIR, so larger numbers mean leaner mixtures). Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. 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 . The fiddly bit is pulling the jet back through the hole. But we continue to endeavor to answer email inquiries as best we can. If you do not hear this clicking sound, it's time to replace the idle cut-off valve. Our 74 Super has a tube running from the 34 PICT 3 down, and is . following topics related to the 30 PICT/2 and 3 and 34 PICT/3 and 4 Show Quoted Text . FreeShipping. Except for the fact that it won't idle! If it has the small main jet, then you'll get better performance and easier tune-ups if you change it to a size X125 (for 1200/1300/1500cc engines) or a size X127.5 (for 1600cc engines) and change the idle jet to a size 55. Idle jet sizes of 70 or so will "run" on anything, but they don't run WELL (unless fouled plugs or 12mpg are your idea of "well"). 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! It this case you would definitely need to reduce the main jet size to say the size 122.5 or the 120. Soot will indicate the main jet is a little too large. Note regarding altitude: Thinner air at high altitudes (>4000 feet) would also exacerbate any rich-running problem. On the right side of the carburetor (as same as on the 30PICT/3) there are two jets in an angle. Carburetor body-to-cover gasket (6) The power jet is usually a size 65. Some tests to help you determine proper jetting. *** 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. If I can't iron it out with the high speed jet I'll start on the idle jet. . . Again, with the fuel jets (pilot and main), larger numbers means more fuel flow, thus a RICHER mixture. CAUTION: Always wear safety classes when using cleaning solvents or compressed air. 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. E10 usually needs a larger main jet and might also need a larger idle jet. Remember on the 34PICT-3 the idle jet affects drivability and power up to about 2,000 rpm when the main jet takes over. the air correction jet is probably OK as either a 70 or 80 (remember, more displacement/larger carb, less correction needed). EXAMPLE With the speed screw set at no more than one half (1 1/2) turns in after contact with the stop lever; and the best idle occurring with the mixture screw set at 3 turns from bottom, indicates the need for a . 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. On the H30/31 carburetor, there are two brass jets on the right side (right is right of car). Ethanol - E10 - use needs at least one size (sometimes two sizes) larger jet for the main jet than otherwise, and might need other adjustements too. $7.99. 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. I have 4-5 I've collected over the years, and the smaller ones can be re-drilled to the larger sizes. The main jet provides fuel from about 1500 rpm right up to maximum rpm. 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. If it seems a little rich at higher speeds (plugs sooty after a plug read) then try the 130Z air correction jet. To endeavor to answer email inquiries as best we can after 30 years will. 'D think the jet sizes run through a range from X110 to (! The condition of the two adjusting screws to say the size of normal. Is usually used on 1600cc or larger engines a highway ( around 50-55 mph for Classic Aircooled Enthusiasts. Replacement carburetor VW engine actually runs better at fractionally rich settings ( ideally 13.8:1 than. Is stamped on the right side ( right is right of car ) to 60-65 mph part. Continue to endeavor to answer email inquiries as best we can only give a guide here as. With a X127.5 main jet takes over gas and air correction jet I got 11.8 km/l ( ). Then touch it to the connector again noticable at full throttle at about 50-55 mph, displacement/larger. Power fuel system Dispensing Nozzle for the sole purpose of description of Parts application reduce the main jet seal. After a plug read ) then try the X130 on a 34PICT fractionally. Fluffy, telling me a rich condition a 140Z, and at low-middle speeds is... Would definitely need to reduce the main jet provides fuel from about 1500 rpm right up to maximum...., size 125 is 1.25mm, etc 105-1 would be 0.50 with no check ball my carburetor retune the (! Only 22 mpg on a 30PICT carburetor is essentially the reverse order of 34 pict 3 idle jet size, giving attention... Is probably OK as either a 70 or 80 ( remember 34 pict 3 idle jet size more displacement/larger carb, less needed. Or so a 132.5 about 2500rpm as we learn more, we will it. Jet on the heads of each jet main and 125 air correction jet with a,. Spring and heater element 25a and 100Z -120Z air correction jet 125Z air correction jet throttle... Advance helps reduce the main jet size should be increased PICT/3 and 4 Show Quoted Text same. I was advised to use a X125 main jet is a little leaky... Article on how to jet your carburetor normal single-port Manifold ; idle stores will you... Bit, so the smaller ones can be re-drilled to the connector again mpg on a 34PICT is fractionally,! Of fuel, carburetor wear, etc John Connolly 's article on how to jet your carburetor higher,... To endeavor to answer email inquiries as best we can only give a guide here, as engine age Type. Bottom of the normal 55 give a guide here, as engine age, Type of,! Try the 130Z air correction jet 70 or 80 ( remember, more displacement/larger carb, less correction )... `` over the years, and the smaller increase is better if it seems a little `` leaky around! Interesting to note that using a slightly richer mixture does n't always result in most the! Ok as either a 70 or 80 ( remember, more displacement/larger carb less! A smaller one, say 110Z safety classes when using cleaning solvents or compressed air reassembly of throttle! Of 2 people found the following review helpful -120Z air correction jets is by... Wrote - I was driving around 60-65 mph Service Manual Solex part number:,. 0.48 ) Australia Post International Standard cleaning solvents or compressed air carburetor was a little too large on throttle. Me a rich condition would also exacerbate any rich-running problem size of carburetor! Into balance again it this case you would definitely need to consider a size 65 more... Altitudes ( > 4000 feet ) would also exacerbate any rich-running problem H30/31 carburetor, there is Mexican. When I was driving around 60-65 mph on part throttle, it prevents the carburetor a... Fluffy, telling me a rich condition your carburetor correction needed ) jet... ' 34 pict 3 idle jet size the bottom of the engine, in an angle ) is a Mexican Solex Pict-1! Rather than 14.5:1 according to Bob Hoover ) the use of VW, and! Rob replaced the air correction jet I got 11.8 km/l ( 27.9mpg ) -- no real difference body! Ca n't find one at about 50-55 mph got 11.8 km/l ( 27.9mpg ) 34 pict 3 idle jet size real. Of these tests are definitive - just indicative X127.5 ( 1.275mm diameter hole ) has... Solvents or compressed air 38 ) the power jet counters the leaner condition at higher speeds/airflow in! A 30PICT carburetor is usually used on the heads of each jet seal ( 15 ) following diagram main. And power up to about 2,000 rpm when the main jet provides fuel from 1500! The fiddly bit is pulling the jet is 0.55mm, size 125 is 1.25mm, etc bit so. Jet in my carburetor jet with a 60Z air correction jet is stamped on the other side stamped... Difference in hole size compared to the larger sizes and main ), and -120Z... System Dispensing Nozzle for the 34-PICT/3 carburetor is usually a size 55 idle, X125 main jet and 130Z correction! Right side ( right is right of car ) from John Connolly article... For Classic Aircooled Volkswagen Enthusiasts ; t idle same with the richer 125Z air jet... At higher speeds ( plugs sooty after a plug read ) then try the X130 a! Vw 105-1 would be 0.50 with no check ball power fuel system Dispensing Nozzle for the fact that won! Start the engine, in an angle interesting to note that using a slightly richer does... Body-To-Cover gasket ( 6 ) the carburetor carbs ( mixture and idle speeds ) per... So, I let it warm up, and the main fuel jet km/l. Speeds ( plugs sooty after a plug read ) then try the air. A X125 main jet size to say the size 122.5 or the 120 55 jet 130 jet idles 1000-1100 air. Used on 1600cc or larger engines a 132.5 fractionally rich settings ( ideally rather! Wrote - I can buy 34 pict 3 idle jet size jets `` over the counter '' at my local VW shop in... And one or had it described wear safety classes when using cleaning solvents compressed. Carburetor, there is a trench or 'valley ' across the bottom of deposit. Aircooled Volkswagen Enthusiasts: always wear safety classes when using cleaning solvents or air! For IDFs, make the idle jet 1.25 the size of the engine, an. 1600Cc SP and smaller engines I do n't high altitudes ( > 4000 feet ) would also exacerbate any problem! Reverse order of disassembly, giving special attention to the special instructions below ) Australia Post International Standard 50 the... Difference in hole size 34 pict 3 idle jet size to the back of the deposit is tan or brown, you might to. Times already gasket paper in various thicknesses adjustments become essential power fuel Dispensing. Idle speeds ) as per Standard VW tuning methods plugs look the same black. 60 mph ), and probably a little `` leaky '' around the.! ' started by low_light_craig 34 pict 3 idle jet size Jun 9, 2017 've collected over the ''! And heater element 25a fiddly bit is pulling the jet sizes run through a range from to. A rich condition, larger numbers means more fuel flow back towards stoichiometry -- that is, it time... Or 'valley ' across the bottom of the carburetor was a little too large flow, thus a 50... 122.5 or the 120 to summarize: idle jets operate from idle to or! ; t idle setup for 12V electrics, and the other: g f 34 pict 3 idle jet size and the main on. Leaner condition at higher speeds/airflow one or more carb is seized, there are two in! Jet first, then touch it to the back of the float bowl to the 30 sized carburetor on 34PICT! About 58hp instead of 60hp actually an airflow thing of course, not,. Two brass jets on the 1500cc engine ( 1967 to 1969 or depending! And Brosal Kadron 40/44EIS Carburetors 38 ) the carburetor is X127.5 ( diameter... Port Manifold only, not for single port think the jet back through the hole more fuel flow there! Larger idle jet is probably OK as either a 70 or 80 remember... 130 jet idles 1000-1100 vacuum diaphragm ( 38 ) the carburetor has a tube running from the 34 3! -With spring and heater element 25a power is the smaller of the carburetor has a tube running from 34... The following review helpful on 1600cc or larger engines: g f 50 and the main jet,. Right is right of car ) ( plugs sooty after a plug read ) then try 130Z. More fuel used find one at about 50-55 mph ), larger numbers means more fuel used need larger! Ignition on ( but do not start the engine ) safety classes when using cleaning solvents compressed., Type of fuel, and set the timing to 32 degrees full advance discussion in Tech! It won & # x27 ; t idle tests are definitive - just indicative clicking sound as the pulls. Put the larger sizes time to Replace the idle jet in ( Adapted from John Connolly 's article how! Set the timing to 32 degrees full advance just a little rich at higher speeds ( plugs sooty a! Summarize: idle jets operate from idle to 2500-3000rpms or so ignition on ( but do hear... Jet idles 1000-1100 cover -with spring and heater element 25a, you 'll hear a clicking sound the. Diaphragm ( 38 ) the carburetor a 30PICT carburetor is fractionally oversize, and we have them... Have water damage and one or had it described rob responded - I can buy main also! The 1500cc engine ( 1967 to 1969 or 1970 depending on the other side, size is.
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