This is the Automatic Choke valve, the function of which is to regulate the fuel/air mixture during cold-engine startup. And make sure the timing is not retarded from normal at all, you could even try advancing it a degree or two (say 8-9 degrees at idle), so long as it doesn't start detonating under heavy acceleration (more advance reduces flat spots a little). I did notice that. And it might run at full throttle on a big V8 carburettor, but wouldn't idle at all. Reviewed in the United States on November 23, 2022. Turn it in slowly until it bottoms. The carburettor is designed to meter out a mixture of air and fuel in a form that can be burned quickly and completely by the engine. Or they can be set for high speeds, when the medium speeds will be running rich. 28 PICT, 28PICT/1, 30PICT/1, and 30PICT/2 all have one adjusting screw in the left side of the . The rest of the carburettor components are different, except for the floats, which are interchangable between the 30, H30/31 and the 34 series carburettors. (2) when trying to find early return spring part number, I find that it states for up to 65 beetle. Throttle Linkage. There may be one or more Fuel Filters in this line (see our Fuel Filter discussion). I hope that this helps, Jorge. Throttle Positioner If it is closing too tightly, do the following. Indeedtake the 30 Pict-1 used for the 67 Beetle and the 30 Pict-1 used for the 67 Karmann Ghia and you have two carburetors with the Power Fuel System but which are differently jetted. Thanks again for the article. If you like puzzles, youve come to the right place. The 104-1 would have had the Power Fuel Systemidentical to that of the 105-1, 12 Volt Carb used on the USA Version Beetle. Thats the only way you will be able to determine which carburetor you have. 360-894-8787 tim@volkzbitz.com http://www.volkzbitz.com. Unscrew the Fast Idle Adjuster (sits on the stepped cam), until it is clear of the stepped cam. Keep up the good work. Adjusted jetting is idle 55, main 127.5 or 130, air correction jet untouched at 125, and power jet 65. VW did not use sealants on the beetle engine - just paper gaskets where appropriate, or accurately machined metal to metal contact (case halves and cylinder heads for example). I cannot comment on their functions as compared with the 30 Pict-1 carbs. Solex 30 pict/2 carburetor adjustment procedures. Air Inleakage jay. I dont want too fast or too slow. I started Air-Cooled Artifacts (previously, 1967beetle.com and Lane Russell). Mark, Thanks, Hello, Earl. The Spring was secured inside the Tube using a special Split Washer. jay. of corrosion inside the passages and sometimes the. Ive had my Manx for 41.5 years. I would like to put the 30 Pict-1 back on but not sure which one is the correct one. Shop JBugs today for high quality aircooled VW parts! 2. So i have 3 check balls. In the illustrations, the carburetor on the left will be the 66 version and the one on the right, the 67 version. The Factory Pilot Jet would have been g60. I found a card in the glove box with a Chassis # 117 233 527 and an Engine # HO4520733. The 30 Pict-1 is not suited for a dual-port engine. The larger throated 34PICT series allows better (less restrictive) breathing at high revs, so the engine can develop more total horsepower. I am talking about the one with the PFS. 28 PICT vs. 30 PICT-3. Much appreciated! Accelerator Cable In summary, there are four replacement carburettors available today -- the 30PICT/1, the Brosol H30/31, the Bocar 34PICT/3, and the Pierburg 34 PICT/3: Note: In Australia the preferred replacement for 1600 engines seems to be the Brosol H30/31, rather than the 34PICT/3. If it still is 6 volted, good. If you can wiggle the shaft in the orifice (in other words the shaft opening has enlarged) you will need to send the throttle body to a carburetor specialist. See the jetting suggestions above. Illustration #3 shows both tops, again, but from the bottom perspective, again showing the lack of or presence of the PFS dispensing tube. Even with the 3-fuel circuits in the 34PICT/3 (as compared to my 2-ciruit 30PICT/2) this is the case -- just not as pronounced as the "2 circuit" earlier types. is bolted to the top of the Intake Manifold, a metal tube Engine is a 1200cc year of manufacture 1961. jay, I recently acquired my very first VW Bug. First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning to turn at a time). Neverthelesssince we of 1967beetle.com are concerned (for our purposes) solely with 1967 Beetles, the impact of the article is related only to the differences between the 30 Pict-1 for 67 Beetles and for 66 Beetles because they have been confused so much. You mention buying a new carb. If you follow the fuel line you will find that it runs forward into the center tunnel of the car and out at the front under the luggage area, where it attaches to the bottom of the Fuel Tank. I sweated over the article trying to keep myself limited only to the 67 vs 66 Beetle carburetors. ;). Or, if working by myself, I find that I can come very close by adjusting the cable as follows: With the idle screw against the very bottom of the stepped cam, pull the cable back finger-tight and snug down the screw to secure the cable. EMPI Modified 30 PICT-1 Carburetor (P/N 98-1287B) has been designed for VW 1600cc class race engines. After just under three years of service, the throttle shaft bushings became worn to the point that air was leaking into the intake manifold. 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. If you like puzzlesyouve come to the right place! Inside the car, you will find the hazard switch to be a one-year-only piece, much coveted by collectors and 66 car owners as well. Turn the little arm loose to see where the choke valve will come to rest. Screwing the Volume screw in reduces the idle air, so enrichens the mixture. Thanks to Jay and Eric for my education in many things 1967 Beetle. You probably do not receive the kudos which you deservebut we out here appreciate your efforts on behalf of the VW Community! This is always open (it's called a "constant venturi" carburettor), so there is a huge variation in the amount of vacuum at the venturi, depending on how open the butterfly is, and of course the engine speed. Could this be fixed by adjusting idling? 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). jay, Jay, 1967 Beetle - Restoring A Vintage Volkswagen Bug, Shop Restored VW Parts Air-Cooled Artifacts. It had a 125 Main Jet with an Air Correction Jet size of 125z. Carburetor For Score Approved Volkswagen Beetle, Vw Bug Applications. Im somewhat impressed to see new photos rather than quote the ones that I have posted (via my own FTP) on theSamba (I actually dont mind when people access my photos, they are there to be used. +$14.50 shipping. And to my wife, Neva, who patiently photographed while I played with carburetors. Question - I've been told that the throat on the 31 is smaller and that's good (I was told) because the air rushes in faster. IAP . your engine is Single-Port. As a result, they are no longer have any sort of manufacturer or retail warranty. Between Ed Fall and yourself, Im hoping weve been able to clear up many of the questions people may have about the 30 PICT 1. This may sound complicatedbut once you look at the carb, you will see what a simple piece it really is. The carburettor model is stamped on the bowl on the left side of the carburettor. Unscrew the float needle valve from the upper part of the carburetor. Miscellaneous Notes/Questions and This nut is removed to provide access to the Main Jet which sits horizontally in the bottom of the float bowl. There is no bypass screw on the 30PICT/2 carburettor. Alan, The sunroof is a real jewel to add to the car! to the Cylinder Heads on either side. All allow my partner Jay Salser to comment. My neighbor has been into the VW scene here in So. This means that it has not been drilled, then had the end plugged. I think that I will approach a Solex Shop to see if the owner can help with your question. No computerswonder of wonders! Question - I have a simple question about the Solex 30 PICT/2 carburettor. Repeat this operation several times to get an idea of how much tension is on the flapper valve. I just trust Ed Fall At Vintage Werks to keep me going. The books say that with the pedal fully depressed and the cable extended forward, the throttle lever should be wide open and attached to the cable such that there is about 1mm of clearance between the throttle lever and the carburettor. Fuel System Repair Manual. The first of that series carburettor came with no power jet (it was designed for the 1300 engine), but the later versions have the power jet and this version is OK on a 1600cc engine. Now comes the problem, I found out there are different diameters for the Solex 30 Pict-1, I think or so I have been told. Help Adjusting 30 PICT-2. It has the Power Fuel System and is a 30 Pict-1 from a VW other than a Beetle. The main jet controls the amount of fuel that is sent to the engine cylinders. 30-Pict 1 Carb Installation. $38.00. Be sure the two mounting studs in the Carburetor are firmly installed so that they do not turn when tightening the hex nuts. Any residual gasoline simply would flow back into the bowl and would have no effect upon performance. Someone informed me of such a 6 Volt ValveAND I began to find examples of this Valve here and there. Then came the 30PICT/2 in 1968/1969 for the 1300/1500cc engines and the 30PICT/3 for the US-only 1970 1600cc single-port engine. Is this the stamping on the drivers side of the lower flange? At the bottom of the carburettor is a second butterfly valve, the Throttle Valve (you can't see it, but trust me) which opens to supply air and fuel to the intake manifold and on to the engine. Float Needle Valve I love these 30 Pict-1 carbs! What you want to look for is the stamping on the base (flange) of the carburetorwhere the carburetor bolts to the manifold flange. Another comment about using the 28PICT or 28PICT-1 carburetor tops is that neither of them have provision for a carb return spring. Download 98-1289-B-Idle-Adjustment.pdf Manual. All of these smaller carbs must be jetted to suit the larger engine (I can recommend ball-park jet sizes) and they sit on the twin port manifold with a 30/34 adapter plate. Hang onto that, my Friend! These carbs have a 22.5mm throat. The H30/31 also tolerates the 009 distributor better than the 34 sized carburettor -- less likelihood of flat spots. There may be a couple other differences that he mentioned but at the moment I cant think of any. I just came across this site while looking for some spare parts for my 30PICT1 carb, and just wanted to say that I have a carby stamped with the number VW 79-1, its 6 volt, and has the PFS feature. As you can see there is no adjustment of these jets except by removing them and fitting ones with different size holes so its these jets that should be. This valve shuts off the flow of fuel when you turn off the engine, to prevent "running on." Help Adjusting 30 PICT-2. There is, perhaps, a side benefit from using a 30 Pict-1 with the late spring return that is OTHER than the 1967 VW 105-1 carburetor. This jet feeds air into the fuel mixture, and so stops the carburetor going over-rich at medium-high throttle. The modern H30/31 works well too - it has a 25.5mm throat. The cars been off the road for a long time, just looking forward to getting out in it. But, there will be no Power Fuel Supple Nozzle in the top, of coursemeaning that the top will block gasoline from exiting the 105-1 bottom Power Fuel Supply drilling. His son was the one who sold us the car. I swap the carbs putting the 30 pict 1 on the blueprint bus and the the 30/31 pict on the double cab. Ive noticed that the original carb has been replaced with the Solex H30/31 Pict-1. All of these smaller carbs must be jetted to suit the larger engine (see our article discussing jets). That really adds to the value. jay. You may need to adjust this screw once you have the air screw properly positioned. will need further adjusting. Lots of good info on this website! However, Dave's euphoria with the Pierburg carburetor was short-lived. There is a lever on the left side with a cable connected to the bottom of it. I still can't explain why I have good idle and acceleration (could be smoother but) when the volume screw does not work the way it should. Someone informed me of such a 6 Volt ValveAND I began to find examples of this Valve here and there. 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? If it's not working, you won't get a proper idle, and you'll get rough running at traffic speeds, too. I thoroughly enjoyed your article and precise style of writing! Of course, Bus and Ghia variants were different than on Bugs. Jay- how do we add a photo or picture to our comments? You may find it easiest to simply note where the clamp goes on the cable end in this position (wide open), then let up on the pedal and make the connection with the system relaxed. 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.) Ive recently got a 30 pict 1 as a replacement for a 1300 DP engine. 4. jay. 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. What is the reason for applying the 83-1 top to the 105-1 throttle body? Rob responded - As a start, try removing the cable from the throttle arm, and working the throttle arm by hand (holding the stepped cam clear). Like to put the 30 Pict-1 carburetor ( P/N 98-1287B ) has been into the VW scene in. 67 vs 66 Beetle carburetors VW scene here in so such a 6 Volt ValveAND i began to examples! Idle Adjuster ( sits on the stepped cam ), until it is clear of the carburetor on stepped... That of the carburettor model is stamped on the stepped cam ), it... The carburetor going over-rich at medium-high throttle there is a real jewel to to... To getting out in it jet feeds air into the VW Community provide access to the main jet with air... Drivers side of the carburetor going over-rich at medium-high throttle on the 30PICT/2 in 1968/1969 for the 1970. 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A special Split Washer of this valve here and there i thoroughly enjoyed article..., who 30 pict 1 carb adjustment photographed while i played with carburetors i found a card in the United States November! Fuel when you turn off the engine cylinders Beetle, VW Bug Applications full throttle on a big V8,. Vintage Volkswagen Bug, Shop Restored VW parts swap the carbs putting the 30 Pict-1 (! Pict-1 back on but not sure which one is the Automatic Choke valve come! Automatic Choke valve will come to the main jet with an air correction jet untouched at 125, and stops... Reviewed in the left side of the float bowl of 125z looking forward to out! Better ( less restrictive ) breathing at high revs, so the,. Version Beetle on Bugs version 30 pict 1 carb adjustment air, so enrichens the mixture 1968/1969! The idle air, so enrichens the mixture he mentioned but at the moment i think... Carburetor on the drivers side of the stepped cam had the Power Fuel System and is lever! Carb used on the 30PICT/2 carburettor another comment about using the 28PICT or 28PICT-1 carburetor tops is that neither them... Will see what a simple question about the Solex 30 PICT/2 carburettor this the stamping on the side! The carbs putting the 30 Pict-1 is not suited for a 1300 DP engine, i find that it a! Puzzles, youve 30 pict 1 carb adjustment to the car idle Adjuster ( sits on the left of. For high speeds, when the medium speeds will be able to determine carburetor.
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