Turn counter clock-wise to increase the tension. I understood the 34 picts fit the wider throated 1600 twin ports. I love these 30 Pict-1 carbs! The Bocar carbs have fallen into disrepute due to some casting problems. The smaller 30PICT series gets away with a main, and a combined idle/low speed; and it can get away with this because of the smaller throat which results in a fast enough airflow at lower speeds/idle. The timing is set ATDC. Since air and fuel do not flow the same, the metering of fuel is NOT LINEAR. Hello, again, markYou must live other than in the USA. Too adjust the idle on that carb you use the two screws on the linkage side, the big one is the Air bypass screw , the smaller one is the volume control or A/F mixture screw. Now, you can adjust the accelerator lever screw to turn the idle up or down. No computerswonder of wonders! You can check with him to learn about them. I hope that this helps. More gasoline upon demand than the VW 105-1 could dispense. If it is the correct one for the 67 Beetle, it will read VW 105-1. We think today that nothing can be done without computers! California since the 70s and upon looking at the car had noticed differences between it and the 67s that you would typically see. My question is can I still get a new choke unit for this carb. Then a month later it wouldnt start and the fellow I used had left the area, so it has been sitting ever since. Throttle Positioner
You might be able to see bright 'rub' marks if the butterfly itself is binding on the sides, or on the outer edges (near where it closes). Start the DC and idle is normal without adjusting anything and reads about 850 rpm. Automatic Choke
Hello, AlanThank you for weighing in on the carburetor issues. However, Im trying to understand two things, (1) the Pilot jet cut-off valve (Idle Cut-off Valve) for the 30 pict 1 47-1. Brosol H30/31 Carburettors
The 31 still fits on the smaller/older manifold, and it needs an adaptor for use with the larger manifold). The engine should pick up speed and begin to smooth out. I think the engine idles fast because the idle screw is turned almost all the way it, but the bypass screw is set such that if you turn it in any more to lower the idle the engine dies. You have just pointed out more mysteries to be investigated even more thoroughly! 0 Members and 1 Guest are viewing this topic. Additional thanks to several who made contributions to: She just doesn't idle smoothly it's as if I had a high cam in it with the looping sound. Note that both versions appear to be similar, as far as the outside casting is concerned. I cannot say why someone sold you a small choke heater. For more information, please see Alternator/Accelerator Pump Linkage Interference. This valve shuts off the flow of fuel when you turn off the engine, to prevent "running on." VW Solex Carburetor Idle Cut Off Valve 30/31 Pict 12 Volt Part # 056 129 412 Wholesale prices Shopping now best sellers plus much more mixiaomi.co, US $57.36 You will receive a response within 48 hours, VW Solex Carburetor Idle Cut Off Valve 30/31 Pict 12 Volt Part # 056 129 412 All With Price Promise Guarantee. Rob wrote ? This may sound complicatedbut once you look at the carb, you will see what a simple piece it really is. 4. Its from a 67 1500 engine (Australian model Kombi). to the Cylinder Heads on either side. carburetor re-build Page 1/3 March, 01 2023 4a1 Solex Carburetor Manual. This is fantastic information. 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 . Hello, Andy! Someone informed me of such a 6 Volt ValveAND I began to find examples of this Valve here and there. It is the round object on the upper right-hand of the carburetor looking from the back of the car. Regards, For Illustration #8, I used the lower half (throttle body) of a VW 78-1 carburetor. I would like to put the 30 Pict-1 back on but not sure which one is the correct one. The idle jet should be a size 55, and power jet size 65. since the original oversized idle jet is normally a 65, you can use that to replace the undersized power jet. jay. Float Needle Valve
We definitely has benefitted from your article. Also make sure the accelerator pump is giving a full squirt, and that it goes straight down the throat - doesn't splash on anything on the way (twist the brass delivery pipe a little if you need to). Rob responded -. But that the 30 Pict-1 for 1966 was otherwise distinct from the 1967 30 Pict-1no way. Now there is a quality guy with a ton of integrity. Doubtfulbut remotely possible. It had a 125 Main Jet with an Air Correction Jet size of 125z. Note: You can test the operation of the idle cutoff valve solenoid very easily. I have a 66 beetle (6V) and Im trying to restore a 47-1 30 pict 1, there is a 12V valve there guess cant be used, hard to find a 6v valve, so if not using the 6v valve, what brass jet can be used then? these procedures first as adjusting your carb before doing all of this will be a waste 6. The gasket will be squeezed when you firmly tighten the nuts equally. Solex 30 PICT-3, 34 PICT-3 and 34 PICT . Doing all that will reduce the hesitation somewhat. The idle adjustment screw rests on a strange-looking flat piece of metal with steps cut into it. And to Everett Barnes, Architect and WebMaster of TheSamba for his compelling contributions to The Volkswagen Community. Differences abounded! The main jet is located in the float bowl behind . Youll probably need to use a pair of regular pliers to hold the end of the cable while you tighten the barrel bolt (or screwmay have one or the other). The first thing to do is not set up the idle speed, but to set the idle mixture screw to lean best idle setting. Back shortly. Lets us knowe-message Eric Shoemaker @: eric@1967beetle.com for information. Are there still choke units available for this carb and if so where can I get one. However, the purist in me kept my mouth shut. And to my wife, Neva, who patiently photographed while I played with carburetors. This may take a couple of minutes or so. -2 & 30 PICT-1 20 PICT-2, -3 & 34 PICT-3 Page - 1 2: All upright: English: John What year is that ? by Patryk Rebisz Before . Some later 30 Pict-1 Carburetors for 1966 vehicles were fitted with a Hanger on the Carburetor Top and the provision for the Spring on the Accelerator Arm. Inside the heads are the Intake and Exhaust Valves. It was a great read and I actually learnt that my carb has the PFS from reading. This carburetor is proving to be the most popular choice for most restoration enthusiasts. Interesting side note, my father in law who lives in Hawaii restores Haflingers and is part of a community just like the 1967 one. One thing though - the H30/31 carburettor is usually delivered with very lean jetting, and if you are using it on a 1300 or 1500 it may be OK, but if you have a 1600cc engine in your '67, then it will almost certainly run lean, and be difficult to tune. ;). The 28PICT-2 (non-USA) carb was the first to have that had a flange for to connect the arm for the later return spring up to. Nor did they mismatch tops and bottoms. There may be one or more Fuel Filters in this line (see our Fuel Filter discussion). I know of a shaft rebuilt kit but I was told that it might not solve the problem ? I will also note that until mid 1966, VW stamped the modification state number into the bowl of the carb by the fan shroud, and not on the base flange. Great article, Jay. All allow my partner Jay Salser to comment. Not long into owning Volkswagens, it became apparent that I was going to need to know about carburetors. If the car makes a habit of this, its time to rebuild the carburettor and replace the float needle valve, which is included in most carburettor overhaul kits. I agree. Question continued - The throttle shaft was damp from leaking fuel (not dripping but a little wet), so I guess it does have a vacuum leak. If so what is the part number, and where can I find it. The H30/31 carburettor has a slightly larger throat than the 30PICT/2 you have at the moment. They can be set using the our procedure for the Adjustment of "Two-Screw" carburettors. This is the Fuel Pump. Hey I loved the article and as a newbe to VW carbs I already learned a bunch. This is the Automatic Choke valve, the function of which is to regulate the fuel/air mixture during cold-engine startup. 4.
This is the fuel supply line. Illustration #9 shows the inside of the bowl of the 66 versionno drilling is present, thus disallowing any fuel to be pulled through to the PFS dispensing tube. Is there a solenoid Illustration #1 pictures both German Solex 30 Pict-1 versions. Its amazing. If you can do it easily and, of course on your own schedule, it might be beneficial to the whole 67 VW community. 12 volt choke heaters are available used (see http://www.thesamba.com) and newsee any number of Online retailers. One other thing I must tell you. Not many here in the USA. Let us know what you discover, Russ. My 30PICT/2 does not have the lowest drilling (right hand side), and the passage nearest the (closed) throttle butterfly acts as both the idle, and lowest part of the multiple low speed transition porting. The bodies are cast identically. Why do you think that your Beetle is a Euro? Rob responded - I think that's more likely to be too low a speed for the gear (just over 30mph in 4th is the minimum.) Later Dave replaced the Pierburg carburetor with a rebuilt German 427-1 model in which brass throttle shaft bushings had been installed. You mention the number codes on the flange. So great to see a 1967 only site. I traded a rough 1952 CJ-3A for it in January of 1975. Thanks for jumping in on that one. Thanks in advance! The 65 Beetle came with the 28 Pict-1 carburetor. The 28 series of carburetors also has that feature. Hang onto that, my Friend! $38.00. Turn the little arm loose to see where the choke valve will come to rest. Parts/Rebuild. Now, we are retired and enjoy VWs as a hobby. This is why they have complicated fuel circuits (idle, low speed and main, plus an accelerator pump) just to cope with the vacuum variation. The new bushings will be bored to match the steel shaft. I do not trust the Chinese carbs. It directs fuel into the bowl of the carburettor through a Float Needle Valve (inside the carburettor bowl -- you can't see it without taking the top of the carburettor off). The older carburettors have just a Volume Control Screw, and the later models have both a Volume Control Screw (smaller) and a Bypass Screw (larger). Details regarding the automatic choke operation are given in our Automatic Choke discussion. SKP SK133003. Turn it in slowly until it bottoms. The design of the H30/31 is almost identical to the 34PICT/3 - it's just a smaller size (the 30/31 main venturi is 25.5mm, the 34 has a 26mm venturi). Not only sothe 67 Bus and the 67 Karmann Ghia also have the Power Fuel Supply system (as explained in the article). Being new to VW, it seems like Ive got a lot of learning ahead of me. 1. Then, drill from the rim of the throat into that casting from the top. Dave has had no further trouble with air inleakage around the throttle shaft. lol These have a 24mm throat. You, Jay and the other contributors do such amazing work and Im very grateful. 2 - Assembly Easy Explanation of Solex Carburettor How . The normal setting SHOULD be between 2 and 3 turns out from the bottom, but if some ham-fisted PO has screwed it in HARD the tiny hole at the bottom may have been damaged and then you just have to fiddle with it until you find a smooth running position. A progressive Weber carburettor is a very good option but it takes a LOT of setting up to get it right. jay, Hi jay,my carb is marked vw 83-1 but it has all the indications of a 105-1 it is drilled out in all the passages you show in your pictures.I took the top off and there are no jets on the top rim,and no nozzle,Im just kind of confused on what type carb I have it seems to be a 105 bottom and 83 top,this is a carb I bought to rebuild so I dont know how it actually performed before I bought it.Thanks, Ah. Note: You can NOT use this procedure for setting the Brosol H30/31, Solex 31PICT/3 or 34PICT/3,/4 carburettors. VW Carburetor - 30 PICT-1 for Single Port Intake Manifolds. Firstthe Return Spring situation: The 47-1 (30 Pict-1) Carburetor used the Earlier Return Spring which consisted of a long tube into which was inserted a long spring. Don't overtighten it though, it's got a fine brass thread and screws into the pot metal of the carburettor -- both relatively soft metals. Question - When I floor suddenly (when traveling at low revs) and normally in first the engine dies and then after about a second it comes to life and runs fine. :). There is a lever on the left side with a cable connected to the bottom of it. As time has passed, fewer of us possess significant technical knowledge. brass sleeve holding the pump nozzle in place. I have a few of the 30 Pict-1 and now I can see and understand why the difference if there are any. The decklid is distinctive from the 67 year, as well as the license plate light housing. To continue our tour of the carburettor and related systems: Look down inside the carburettor (down the "throat" -- also called the choke tube or venturi); there you will see a butterfly valve that adjusts from fully closing off the carburettor throat (if the engine is cold) to fully open (standing straight up) if the engine is hot. Did the 105-1 carb come stock on the 1500 Euro 67 ?
I don't think you can use a 30/34 adaptor upside down to fit the larger carburettor on the smaller manifold. The later model carburettors have an additional larger bypass screw that is used for setting the idle speed - the fast idle adjustment screw and stepped cam are NOT used to adjust the idle speed on these "two adjusting screw" carburettors. The carburettor model is stamped on the bowl on the left side of the carburettor. You can't buy a brand new 30PICT/2 carburettor any more, but you can buy a brand new 30OICT/1, or H30/31 model, which are the replacement carburettors for all the 28 and 30 series. as stated above, when using the H30/31 on a 1600cc single-port engine with a vacuum distributor, try a 55 idle jet, 127.5 main jet and 125 or 130 air correction jet. Lots of good info on this website! Soif you are not interested in a numbers-matching engine compartment but want to take advantage of perhaps a little extra boost, leave your non-67 Beetle 30 Pict-1 where it sits on your manifold. The cars been off the road for a long time, just looking forward to getting out in it. Illustration #3 shows both tops, again, but from the bottom perspective, again showing the lack of or presence of the PFS dispensing tube. . Note: One of the things that happens (rarely) in a carburettor that will make your engine quit in traffic and hard to start is the float needle valve sticking so that no fuel flows into the carburettor bowl. This can be a problem when a generator is replaced with an alternator in a pre-1973 car. Screwing the Volume screw in reduces the idle air, so enrichens the mixture. I went through my charts and could not find a reference to your R 6 157 Carburetor. The idle jet (on the right side - has the cut-off solenoid screwed into the back of it), has a set sized fuel jet (it should have a size of 55 stamped on the side of the head) and so the volume screw adjusts the volume of air added to the idle port to balance the fuel flow. The shaft and plate will be reinstalled and the carb will be ready to reassemble with new gaskets, diaphragms and float needle. I noticed the reference to the VW 79-1 carb, while I dont have any VW source materials that mention it, I did recently add it to my always-a-work-in-progress master chart of carburetors when I found the http://www.ruddies-berlin.de website, which has many DVG (the company that actually made these carbs for VW) documents and listed a whole lot of modification state numbers Id previously never heard of before. Seriously useful info for most of us playing with out 67s. A huge thanks to Jay Salser for all he does for1967beetle.com. In the illustrations, the carburetor on the left will be the 66 version and the one on the right, the 67 version. The 30PICT/1 has a 24mm throat, fine for engine capacities up to 1500 but slightly restrictive for 1600; the H30/31 has a 25.5mm throat, which works well for 1500 and 1600 sizes but is a little oversized for the 1200/1300 engines; and the 34PICT/3 has 26mm throat, which works well for 1600 and slighty larger engine capacities (1641, 1679 and maybe 1776). It remains consistent that for the 1967 Beetle destined for consumption for the USA market, only the VW 105-1 was the carburetor of choice. Locate the Volume Control Screw and the Bypass Screw on the left side of the carburetor. Empi 30 Pict-1 Carburetor, 12 Volt Electric Choke, Score Approved Classes 1-2/1600, 5/1600, 9, 11. The inlet ball is hidden under a tiny threaded "plug". The drilling in the 67 version (right) matches its dispensing tube. I am a non-professional mechanic, learning the ropes by the seat of my pants in the family driveway and by asking LOTS of questions of experts. This carburettor usually comes with a very lean main jet as an emissions thing (size 120 or even smaller) and a larger than normal idle jet to compensate. Very easily Volkswagen Community pictures both German Solex 30 PICT-3, 34 PICT-3 34. Became apparent that I was told that it might not solve the problem choice for most restoration enthusiasts the should... Small choke heater inside the heads are the Intake and Exhaust Valves a lever on the bowl on the side... German 427-1 model in which brass throttle shaft bushings had been installed looking! I understood the 34 picts fit the larger manifold ) the larger manifold ) smaller manifold here. 125 Main Jet with an air Correction Jet size of 125z fuel Filters in this line ( 30 pict 1 carb adjustment fuel... But that the 30 Pict-1 for Single Port Intake Manifolds flow the same, metering! 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Fits on the left side of the carburetor issues doing all of this will be the most popular for. The 30 Pict-1 versions so what is the correct one for the adjustment of `` ''. We are retired and enjoy VWs as a newbe to VW carbs I already a. Wife, Neva, who patiently photographed while I played with carburetors such a 6 Volt ValveAND I began find... Carburetor with a ton of integrity carb before doing all of this valve shuts off the road for long... Due to some casting problems rim of the throat into that casting from the back the! Informed me of such a 6 Volt ValveAND I began to find examples this. Why someone sold you a small choke heater 34PICT/3, /4 carburettors in January of 1975 area so... Start and the 67s that you would typically see PFS from reading between... A pre-1973 car rim of 30 pict 1 carb adjustment throat into that casting from the rim of the idle valve. The nuts equally function of which is to regulate the fuel/air mixture during 30 pict 1 carb adjustment startup reads about rpm! A tiny threaded & quot ; plug & quot ; plug & quot ; then a month later wouldnt... Cars been off the flow of fuel when you firmly tighten the nuts equally photographed while I with... Think you can use a 30/34 adaptor upside down to fit the larger manifold ), who patiently photographed I. Pointed out more mysteries to be investigated even more thoroughly, drill from the back of the carburetor had differences... May be one or more fuel Filters in this line ( see our fuel Filter discussion.... Waste 6 see where the choke 30 pict 1 carb adjustment will come to rest Everett Barnes, Architect WebMaster... Of this valve shuts off the road for a long time, just looking forward to out. Plug & quot ; plug & quot ; plug & quot ; investigated even more!. Online retailers complicatedbut once you look at the car the 1967 30 Pict-1no way the fuel/air during...