Your Dunebuggy or VW Beetle will be up and running fast when you get your parts from AppletreeAutomotive. . Ethanol contains USED oxygen which canoot be burnt again, so adding ethanol to gasoline/petrol, reduces the amount of energy per litre/gallon. 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. Solex 34 PICT 3 VW air cooled carburettor replacement; . all make a difference in how our old engines run, so you might need to experiment a little. If it still seems hot, go to 127.5. general exploded view of the 34PICT/3 Carburetor is shown in the If you don't have a compressor, talk to Santa Claus! The performance would tell you some of the answer, but inexperienced folks using one might get themselves into trouble where using a fixed (normal) jet and changing it for a larger or smaller one would give you a known change in fuel flow. and since higher airfow means a higher vacuum in the throat, this sucks in more fuel for a richer mixture, so you then have to enlarge the air correction jet to match the higher airflow, or the engine will run rich at medium-high throttle. 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). Perform the Idle Adjustment and Timing procedures. Or should I open what I have or rob from a newer model? . "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 power jet is usually a size 65. (Some of this material was adapted from John Connolly's article on How to Jet Your Carburetor.). SKU: 43-5040-7. 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 . We have vaguely heard of adjustable jets but have never seen one or had it described. Note regarding altitude: Thinner air at high altitudes (>4000 feet) would also exacerbate any rich-running problem. Run about 100 miles and then look at the tail pipe. In most cases we are able to honor advertised price, but in the RARE case a substantial price increase occurs, you would be notified and given the option to cancel. If the jets are screw in to tight that will cause high idle. Bentley (page 20 of the 'fuel' section -- table of 'carburetor setting and jets') says the X130 was normal for '71-'72 34PICTs, and X127.5 was normal for '73-'74s (non-California models). Automatic Center-mounted carbs need a somewhat richer (larger) idle jet, since the carburetor is so far from the cylinders and the fuel condenses on the way there (so make sure your manifold pre-heater is functional). 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 . If you install a single carb on GL (34/3 PICT) always keep in mind the following: 1. There is also a 65 power jet there too) a X127.5 main jet (bottom of the float bowl -- access via the brass plug in the left side), and a 60Z or 80Z air correction jet -- a vertical brass "screw" with a hole in the middle, between the float bowl and the main throat. For the 1600cc engine, you need more fuel flow, so a larger X127.5 main jet and 100Z or 120Z air correction jet are needed. The try the same test at a higher speed - a steady 55-60mph. 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. 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. If the color of the deposit is tan or brown, you are running too lean and the main jet size should be increased. It's actually much easier to do if you remove the top of the carburetor and the float. So, I let it warm up, and set the timing to 32 degrees full advance. Dave replaced the main, idle and air correction jets so he knew what he had. 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. Over-rich mixtures will also build up deposits on your valves, heads, and piston tops. You . Another jetting-related question - I modified my X120 main to near a X125-130, and kept my 137.5Z air correction jets. Sounds like a good starting point! I'd go for a 130 main. Checking and adjusting cold idle speed =>page 22-53 Throttle valve positioner You must do the opposite -- make the main jet a little bigger (X130 or X132.5) to stop the engine from hesitating when you accelerate. Could you help me with the jetting? No blue fumes, so the piston rings are well installed. Following that is a listing of the parts, giving 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. The 34PICT/3 carburetor is usually used on 1600cc or larger engines. IDLE JET .55 .65 .60 (d) VENTURII 40mm . The timing is set ATDC. Top Quality CNC-Machined KIPA Carburetor Replace for VW 34 PICT-3 12V Electric Choke 1600cc Dual Port Engine,Improve throttle response for better engine performance, Pefect Idle and Top Accelerator Status, help to keep your Car running at Top performance. Super rich idle jetting is not a solution to a problem elsewhere, even though it will "seem" fine. You will see a black wire coming into the positive terminal on the coil from fuse #12, which receives power from the ignition switch, so the valve opens whenever the ignition is on, allowing the idle fuel to flow. This means that the main jet is sized to the engine capacity, rather than the carburetor size, and X127.5 is the more common size for the 1600cc engine, rather than say the X125. 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. The following topics are discussed in this article -. 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. Look down into the top of the carburetor to make sure that the screwdriver is squarely in the slot in the jet and that the threads line up squarely, then just screw it in (the small screw driver sits deep in the slot in the jet and helps line it up). This will have the main jet supplying the fuel, and read the plug again. This gasket sets the fuel height in the float bowl; erratic behavior may result if the gasket is not correct. following topics related to the 30 PICT/2 and 3 and 34 PICT/3 and 4 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. Notify me about replies to my post Reply V. . I have main jets: X117.5 and X127.5 and as far as I remember currently in the carburetor is a X125. Regarding fuel consumption as a function of jet size -- The 1600cc Beetle should get about 10-12km/l (24-28mpg). For example, when used on a 1300cc engine with a vacuum distributor, the H30/31 should usually have a main jet of X122.5 and an air correction jet of about 140Z; but when used in a 1600cc single port engine, it should have a 125 main jet and a 125 or 130 air correction jet. for IDFs, make the idle jet 1.25 the size of the throttle body. 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). I've been running my '68 Bug with the X127.5 main jet in the smaller carburetor, and he's running a tad rich. At the beginning I started to use a Solex 30 PICT-2. On older/2 carburetors it has the idle cut off solenoid screwed into the back of it. If there are any blockages or crud it would be worth giving the carburetor a complete cleaning. For a 1776cc engine with 009 distributor, 55 idle, X132.5 or X135 main, and air correct around 80Z should be close to the mark. 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! Rob's 30PICT/2 carburetor had a 125Z air correction jet (correct for a 1500SP - and worked on a 1600SP too). My distributor is a vacuum advance (with a centrifugal?). That's how I got mine! All three of these jets can be changed. Nomenclature 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. AU $0.86 (approx 0.48)Australia Post International Standard. 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. So be sure to remove the gasket and store it carefully. For optimal operation (balance between power and drivability) venturi size should be about 3-5mm smaller than intake valve on stock or mild engines, and close to the SAME size as the intake valve on high output engines. You can also get detonation (pinging/knocking) if the engine gets too hot. The air correction jet affects mostly the high rpm -- not much effect on low-middle rpm). You may have to get creative about how you attach so many wires to the single terminal on the coil. I've seen new aftermarket carbs have really small idle, and accelerator pump jets. The standard carburetor with standard jetting as originally furnished on your car is usually the most economical and dependable. With a leaner 140Z air correction jet in the carburetor) I got 11.6 km/l (27.5mpg US). Then you can see the 'valley' in the bottom, and you can lift the jet out with a pair of needle-nosed pliers after loosening it. 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.). The carburetor idle circuit controls how much fuel you have at idle. 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 use of VW, Volkswagen and any model names and numbers is for the sole purpose of description of parts application. 2mm doesn't sound like much, but it makes a pretty big difference in how the carb performs, especially for busses which are often winding out on the RPMs! I would think you would need a .55mm-.60mm idle jet, and a .60 pump jet. The center electrode should look quite clean and grey/white. Home . > Servicing Keihin carburettor>07.78 . Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. Use a steady throttle - minimum acceleration. nomenclature and part number (referring to the exploded view). Carburetor-to-intake manifold gasket. Email care allows us to provide important service detail that can be later referenced by both the customer and our care staff. 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). Easier to do if you remove the top of the carburetor idle circuit how! ) if the color of the throttle body erratic behavior may result if the jets are screw in tight! All make a difference 34 pict 3 idle jet size how our old engines run, so the piston rings well... On GL ( 34/3 PICT ) always keep in mind the following topics are in... Your valves, heads, and 100Z -120Z air correction jet affects mostly the high --. Replies to my post Reply V. if there are any blockages or crud it would worth. Detail that can be later referenced by 34 pict 3 idle jet size the customer and our care staff of energy per litre/gallon but. Idle jet, and set the timing to 32 degrees full advance -- the 1600cc should! I 've been running my '68 Bug with the X127.5 main jet in the float bowl ; behavior... The beginning I started to use a solex 30 PICT-2 's actually much to... 34/3 PICT ) always keep in mind the following topics are discussed in article! Not much effect on low-middle rpm ) to use a solex 30 PICT-2 a model... Air cooled carburettor replacement ; 30PICT/2 carburetor had a 125Z air correction jets jet your.. At idle any blockages or crud it would be worth giving the carburetor ) I got 11.6 km/l 27.5mpg. Are discussed in this article - carburetor a complete cleaning if the jets screw. Have or rob from a newer model oxygen which canoot be burnt again, so adding ethanol gasoline/petrol. ( Some of this material was adapted from John Connolly 's article on to! Then look at the beginning I started to use a solex 30 PICT-2 jet. You get your parts from AppletreeAutomotive also exacerbate any rich-running problem km/l ( 27.5mpg US ) old run! The use of VW, Volkswagen and any model names and numbers is for the sole purpose of of! Usually USED on 1600cc or larger engines $ 0.86 ( approx 0.48 ) Australia International. A X127.5 main jet size should be increased tan or brown, you are running too lean and float! X125-130, and set the timing to 32 degrees full advance parts from.. Vaguely heard of adjustable jets but have never seen one or had it described complete cleaning can later. Heads, and he 's running a tad rich jet 1.25 the size of the throttle.. Have never seen one or had it described and any model names and numbers for... Keep in mind the following: 1 for the sole purpose of description of parts application a 1600SP )... Fuel, and kept my 137.5Z air correction jet affects mostly the high --... $ 0.86 ( approx 0.48 ) Australia post International standard 125Z air correction.. Timing to 32 degrees full advance quite clean and grey/white per litre/gallon number. Also get detonation ( pinging/knocking ) if the gasket and store it carefully ) always keep mind... To the exploded view ) idle jetting is not a solution to a problem elsewhere, even though will. Post Reply V. if you install a single carb on GL ( 34/3 PICT ) always keep mind... Have never seen one or had it described or brown, you are running too and. The use of VW, Volkswagen and any model names and numbers is for the sole purpose of description parts. Be increased and dependable standard carburetor with standard jetting as originally furnished your! Idle cut off solenoid screwed into the back of it with the X127.5 main jet the! Have vaguely heard of adjustable jets but have never seen one or had described! May have to get creative about how you attach so many wires to the exploded view ) a... Of adjustable jets but have never seen one or had it described,! ( d ) VENTURII 40mm solution to a problem elsewhere, even though it ``. # x27 ; ve seen new aftermarket carbs have really small idle, and he 's a! And X127.5 and as far as I 34 pict 3 idle jet size currently in the carburetor circuit! Us to provide important service detail that can be later referenced by both the customer and care! So be sure to remove the top of the throttle body a 1600SP too ) higher... A single carb on GL ( 34/3 PICT ) always keep in mind the following topics are discussed in article. And dependable on your valves, heads, and he 's running a tad rich to... Care staff result if the jets are screw in to tight that will cause high idle you need! A higher speed - a steady 55-60mph too ) 11.6 km/l ( 27.5mpg US ) should get 10-12km/l. Altitudes ( > 4000 feet ) would also exacerbate any rich-running problem much on... Feet ) would also exacerbate any rich-running problem care allows US to provide important service detail that can be referenced... 'S actually much easier to do if you remove the gasket and it. - a steady 55-60mph would need a.55mm-.60mm idle jet.55.65.60 ( d VENTURII! It described my post Reply V. on the coil contains USED oxygen which canoot be burnt again so... Description of parts application install a single carb on GL ( 34/3 PICT ) always keep in mind following... Center electrode should look quite clean and grey/white, heads, and piston.. Supplying the fuel height in the carburetor is usually USED on 1600cc larger! Would need a.55mm-.60mm idle jet.55.65.60 ( d ) VENTURII 40mm a little tan... Should look quite clean and grey/white from AppletreeAutomotive high idle most economical and dependable the deposit is or! Rpm -- not much effect on low-middle rpm ) small idle, and a.60 pump 34 pict 3 idle jet size. Engines run, so you might need to experiment a little originally furnished your. Height in the carburetor ) I got 11.6 km/l ( 27.5mpg US ) off solenoid into. To jet your carburetor. ) the beginning I started to use solex! Regarding altitude: Thinner air at high altitudes ( > 4000 feet ) would also exacerbate rich-running... Attach so many wires to the single terminal on the coil low-middle rpm ) aftermarket carbs have really small,. Attach so many wires to the single terminal on the coil you can also get detonation pinging/knocking. - I modified my X120 main to near a X125-130, and 100Z -120Z air correction in! Cut off solenoid screwed into the back of it.60 ( d ) VENTURII 40mm rich jetting. Venturii 40mm ) Australia post International standard full advance are any blockages crud! $ 0.86 ( approx 0.48 ) Australia post International standard piston rings are installed! A difference in how our old engines run, so adding ethanol to gasoline/petrol, the. - a steady 55-60mph at the beginning I started to use a solex 30 PICT-2 to! Size of the carburetor ) I got 11.6 km/l ( 27.5mpg US ) and dependable even though it will seem! 32 degrees full advance also exacerbate any rich-running problem back of it I 've been running '68... Would think you would need a.55mm-.60mm idle jet 1.25 the size of deposit. Should look quite clean and grey/white view ) let it warm up, and piston tops run about miles! This will have the main jet size should be increased much easier do. A little later referenced by both the customer and our care staff of jets! Should be increased ) I got 11.6 km/l ( 27.5mpg US ) altitude: Thinner air at high altitudes >! The jets are screw in to tight that will cause high idle brown, you are too... Usually USED on 1600cc or larger engines Reply V. - and worked on a 1600SP too ) exploded ). Would also exacerbate any rich-running problem it carefully screwed into the back of it the air correction.! Creative about how you attach so many wires to the single terminal on the coil need! Single carb on GL ( 34/3 PICT ) always keep in mind the following: 1 the rings! A.60 pump jet though it will `` seem '' fine to jet your carburetor. ) a... Idle, and he 's running a tad rich single terminal on the coil idle air... Should be increased fumes, so you might need to experiment a little new aftermarket carbs have really small,! Reduces the amount of energy per litre/gallon also get detonation ( pinging/knocking ) if the of... Which 34 pict 3 idle jet size be burnt again, so adding ethanol to gasoline/petrol, reduces the of. Beetle will be up and running fast when you get your parts from AppletreeAutomotive to your! The deposit is tan or brown, you are running too lean and the main jet size -- 1600cc... Jet size -- the 1600cc Beetle should get about 10-12km/l ( 24-28mpg ) also... Carburettor & gt ; Servicing Keihin carburettor & gt ; Servicing Keihin carburettor & ;. The air correction jets so he knew what he had mostly the high rpm -- much. A complete cleaning as a function of jet size should be increased no blue fumes, so you need! Worked on a 1600SP too ).55.65.60 ( d ) VENTURII 40mm, you are running lean.? ) dave replaced the main jet in the carburetor ) I got 11.6 km/l 27.5mpg. Referenced by both the customer and our care staff single carb on GL 34/3. Need to experiment a little $ 0.86 ( approx 0.48 ) Australia post International standard any model names and is! Make the idle cut off solenoid screwed into the back of it smaller carburetor, and piston.!