jay, Can someone tell me if you install a vw 83-1 top on a 105-1 carb will your engine run normal . And one little tiny one on the passenger side of the carb. Thanks for commenting. Step 1: Check and Adjust Fuel Pressure. We own a '67 Beetle and a '68 Karmann Ghia. The /2 of older carburettors has only one adjusting screw in the left side, and has only two internal fuel circuits. My series of photographs will illustrate the Power Fuel System (or PFS as I denote it). As you said in one of your notes, if the throttle valve is not seating properly (i.e., 0.004 inch open) it will interfere greatly with the normal IDLE flow -- i.e., fuel will be flowing through the transition ports under the idle port -- which I assume would make the engine run faster. 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. Illustration #6 shows the drivers side of the bottom halves of both versions. Thank you Jay for the time and knowledge! So the modern H30/31 is in fact really a copy of the 31PICT carburettor -- they have included the "30" in the model number (H30/31) to show that it replaces both the 30 and 31 series carburettors. Brosol H30/31 Carburettors Rob responded - The carburettor metal is fairly soft and it wouldn't take much pressure on the screw to force the bottom of the hole larger, but you couldn?t see it with a flashlight down that tiny hole anyway. On the twin port engines, it has to be used with a 30/34 adaptor, since the twin port manifold has a larger diameter than the single port manifold. 46-1 (Ghia) and 47-1 (Bug) use the Early Return Spring System. Fits your vehicle This product was made to fit the stock . JimIt is difficult to know which carburetor you have until you find the stamping on the flange. I actually screen shot this entire article for fast reference once Im home to start rummaging through my stash. 65). Dual Carburettors Whoa.more information than I can handle. They can all be tuned using our procedure for the Adjustment of "Single-Screw" carburettors. 1 Dual Fuel Carburetor Kit. Product Update as of 2/14/2022 * BROSOL has stopped manufacturing these carbs. Most stuff prob. DO NOT OVER-TIGHTEN! So my 1600 with smaller 30PICT/2 carburettor makes about 55-56 hp, where your 1600 with larger 34PICT/3 should make about 60hp. 4. To answer your question about the check ball beneath the brass plug in the bowl of the carburetoryes..that ball is essential. No difference in the choke heaters. The 66 was the first year to have the black steering wheel, knobs, etc. Empi 30 Pict-1 Carburetor, 12 Volt Electric Choke, Score Approved Classes 1-2/1600, 5/1600, 9, 11. Question - I replaced the volume screw when I rebuilt the carburettor a few weeks ago? You may need to adjust this screw once you have the air screw properly positioned. Perhaps that would not make a great differencemight help when that added surge is needed (going up a hill, passing, etc.). I dont want too fast or too slow. Hello, again, markYou must live other than in the USA. The carb will still run but the advantage of closing the drilling to thwart dieseling, when the engine is shut off, is lost. The mechanics Rob has talked to say they have less trouble with the H30/31, and although it's just a little small for the 1600cc engine, it only loses a fraction at the top end, which doesn't bother most folks for general running about. Bypass screw which adjusts the idle speed. Make sure the air cleaner is seated firmly on the top of the carburettor before beginning the adjustment -- the engine expects it to be there. 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. Alan, The choke assembly has been removed and plugged. Turn clockwise VERY slowly in until you hear the engine begin to slow. 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). Rob wrote - The normal VW carburettors have just one throat (venturi). Intake Manifold Someone asked - how do I set up an H30/31 which I have on my 67 bug? I noticed that to carb tops you used for examples are the small choke housings like mine. But this smaller throat runs out of puff at higher speeds, the cylinders don't get time to fill completely before the inlet valve closes, as the air/fuel mix cannot get through the restricted throat fast enough. No computerswonder of wonders! Of course, maybe it's the other way around -- maybe the throttle valve is sticking open, which would make the throttle lever open, too. Illustration #7 shows the end of the horizontal casting in the 66 version (drivers side)the end has not been plugged. Fits: The Carburetor Fits for VW Beetle VW 30/31 PICT-3 engine 1975-1982. 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). I have e-mailed Eric Shoemaker regarding rebuilt carbs. Hello, AndyWorking with Eric has caused me to rethink most everything I thought that I knew about the 1967 Beetles! The first dual port 1600s came in 1971, and have a double letter in front of the engine number, AF or AD for that year. Thank you for reading the article. 640867 BTWtell me about the stamping which you see on the flange (drivers side)the flange that sits on the manifold. I have a few of the 30 Pict-1 and now I can see and understand why the difference if there are any. Hi Jay. I do have the PFS dispensing tube on the tope have of the carb and that tells me it is a 67. In my opinion the 30PICT/2 is one of the most reliable carbs Solex ever made (some folks dont like them), and it matches the 1500/1600cc single-port engines very well. 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. Move the ceramic choke heater slightly clock-wiseto loosen the tension. Before you begin to adjust the carburettor, the valves, points, and timing should be set. manifold itself before it attaches to the cylinder head.). Hello, BruceWhoopsyes, author error. I understood the 34 picts fit the wider throated 1600 twin ports. If you really do need to get a new carburettor, the readily-available replacements 30PICT/1 and H30/31 carburettor will fit straight on your manifold. All these 30 and 31 series carburettors ( 1200cc, 1300cc, 1500cc, and 1600cc engines) If so what is the part number, and where can I find it. Thanks for jumping in on that one. Essentially you will have a 30 Pict-1 1300cc carb which would have been for a 66 Beetle. Thank you for signing up! Now there is a quality guy with a ton of integrity. On the throttle lever (back at the carburettor) there is a return spring that returns the Throttle Lever Screw (also called a Fast Idle Screw) to rest on the Stepped Cam on the left side of the carburettor. Replace the solenoid if necessary. Here is my question. Great article, Jay. Float Needle Valve Miscellaneous Notes/Questions and jay. The following note is from a respected contact who overhauls carburetors and replaces the throttle shaft bushings -. 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. Additional thanks to several who made contributions to: It has been stored, unused for a long period. The gasket will be squeezed when you firmly tighten the nuts equally. The VW 83-1 Carburetor was an unusual carburetor (from my perspective). All: I'm looking for the correct procedure for adjusting my 30 PICT-2 carb on my 68 AS. There are 3 screws securing the choke ringwhich keeps the choke element in its intended position. ~~~. 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. 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 Spring was secured inside the Tube using a special Split Washer. Pull the cable through firmlydo not try to hoss on ityou dont want to pull the accelerator pedal. And since the 28 series carburettors don't have a power jet they run the engine lean at high airspeeds through the carburettor. If it is closing too tightly, do the following. A huge thanks to Jay Salser for all he does for1967beetle.com. Area 2 - Carburetor Installation & Adjustment. Under the horizontal part of the intake manifold in the center is attached a smaller tube, the Heat Riser Tube, which brings up exhaust gas to heat the fuel/air mixture inside the intake manifold before it goes to the cylinder heads. Problems tuning a 30 PICT 1 carburetor. The Pilot Jet Valve (idle jet) would be the g55. Also, some of the 28 series carburetors, with the PFS, had larger-orifice-dispensing tubes. Turn on the ignition (don't start the car), and pull the wire off that solenoid. It had been sitting for over 5 years collecting dust. There are numerous 30 Pict-1 carbs, but of them, only the one stamped VW 105-1 is the factory designated one for the USA Deluxe Model 67 Beetle. Thanks so much for taking the time to carefully describe and illustrate the differences between the carbs. The jets in all Solex carburettors are interchangable - they all have the same thread etc. jay. Thank you for your patience! Stock vent tube is also removed, and float bowl fitting has been added to prevent fuel slosh in rough terrain. You are talking about the brass plug in the rim of the carburetor on the drivers side of the carb. 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). If you can do it easily and, of course on your own schedule, it might be beneficial to the whole 67 VW community. of corrosion inside the passages and sometimes the. Firstthe carb will operate as is (of course, given that it isnt damaged so that it cant be rebuilt). This is the "idle adjustment screw" on the 28 and 30 series carburettors, and called the "fast idle adjuster" on the 30PICT/3, 34PICT/3, 31PICT and Brosol H30/31. Stay tuned to 1967beetle.com! Lets see if we can unearth the relevant information. Find the automatic choke. There are two numbers on my carburetor. Hi Jay, My wife, Neva, and I have been driving and working on VWs since 1976. The are alignment marks on the ring and canister body so you can see how much it's moved. The idle adjustment screw rests on a strange-looking flat piece of metal with steps cut into it. I recognize you as one of the knowledgeable persons on the Samba Forums who passes his knowledge to the rest of us! Accelerator Cable Theres a good supply of most 6 volt parts. There are numbers referring to 30 Pict-1 versions for T-2s and for Karmann Ghias, which follow the same differential regarding the Power Fuel System (to be discussed further in this paper). The choke position is adjusted by loosening (not removing) the three screws on the retaining ring of the choke canister and rotating it under the ring. is okay. You could always replace the choke to 6V. EMPI Modified 30 PICT-1 Carburetor (P/N 98-1287B) has been designed for VW 1600cc class race engines. One is VW 47-1 and above this number it is 9547_0 Kentucky. jay. The carb tops are not marked to match the bottom halves. As time has passed, fewer of us possess significant technical knowledge. Thanks to Jay and Eric for my education in many things 1967 Beetle. I dont advise doing that. 1.0 out of 5 stars Will not allow air/ fuel adjustment,very disappointing. 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. This nut is removed to provide access to the Main Jet which sits horizontally in the bottom of the float bowl. You pose an interesting question. Now, you can adjust the screw mentioned above. Buy Carburetor for VW Beetle 30/31 PICT-3 Engine Single Port Manifold Automatic Choke Carb with Gasket 113129029A 027H117510E: Carburetors . If you have a VW 105-1 carburetor which has not been altered, you should have no problem. Make sure that the idle cutoff valve is screwed into the carburettor snuggly, and not rattling loose. Help Adjusting 30 PICT-2. The H30/31 Brosol carburettor can run the 1600cc engine OK, but it MUST be jetted correctly. I just trust Ed Fall At Vintage Werks to keep me going. CARBURETOR KIT CARBURETOR Kit Propane Switch Handle 170F Adjustment Fuel - EUR 54,32. My pic 30 saids vw-75 on the flange. It's important to set the valves, points, timing and to check the choke before setting the carburettor, as they all work together for a smooth running engine. jay. If it is loose, air will be sucked into the carb around the threads and it will be impossible to correctly adjust the carb. Later Dave replaced the Pierburg carburetor with a rebuilt German 427-1 model in which brass throttle shaft bushings had been installed. The main problem is that the venturi HAS to be big enough to allow airflow at full throttle, but this means there are problems at idle and low speed because the airflow is too low for good vacuum/fuel metering. The /4 designation means it's been set up as a lean running to control emissions -- more commonly found in California than in other parts of the world. I went through my charts and could not find a reference to your R 6 157 Carburetor. My chart shows that the 83-1 did not have the PFS. Next, pull the accelerator cable through the securing barrel to attach the cable to the throttle lever (drivers side). There is another connection point on the fuel pump with a metal or rubber line attached to it. Interesting side note, my father in law who lives in Hawaii restores Haflingers and is part of a community just like the 1967 one. Ha I knew Id be needing this info. If it is set too tightly (closes hard against the carb throat), it will take the choke too long to heat and to open the valve for proper running of the engine. VW Solex Carburetor Idle Cut Off Valve 30/31 Pict 12 Volt Part # 056 129 412. 4. jay, For those reading this Threadheres more on the subject which occurred on separate e-messaging: Will not allow air/ fuel Adjustment, VERY disappointing the small choke like! Idle cutoff Valve is screwed into the carburettor snuggly, and has two! Cable Theres a good supply of most 6 Volt parts set up an H30/31 which I have a few ago! 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Rebuilt the carburettor a few of the carb steps cut into it later Dave replaced the volume screw when rebuilt... This nut is removed to provide access to the throttle shaft bushings - that I knew about the plug! The manifold went through my charts and could not find a reference to your R 6 Carburetor! Pict-1 and now I can see and understand why the difference if there are.!