The Power Fuel System Dispensing Nozzle for the VW 105-1 would be 0.50 with no check ball. At that point turn the screw out (counterclockwise) VERY slowly until you find the sweet spot where the engine wont run faster. Hello, MarkFirst lets talk a minute about your carburetor. 30/31 PICT-3 Type 1 & 2 Bug Bus Ghia. Throat size is always a compromise because you have to have an airspeed high enough to create a partial vacuum at low speeds (needs a small throat) but not too small to be restrictive at high engine speeds (needs a bigger throat). The carburettor is equipped with a set of jets to "correct" it this situation, and one more set to correct the correction! 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. of corrosion inside the passages and sometimes the. You will come to Get E-Mail Updatesenter your information and click on Subscribe. This stepped cam is moved by the automatic choke so that the screw on the throttle lever rests at lower and lower levels as the engine warms up. Shop JBugs today for high quality aircooled VW parts! 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. So, besides metering how much fuel the engine gets, the carburettor also atomizes the fuel and mixes it with the air entering the engine. Thanks for commenting. Fit also on my manifold without problem. Jay, Or should find a 75-1 instead? If it is the 1500cc, 6 volt Beetle which was destined for a market other than the USA, it might have had the VW 104-1 Carburetor with the 6 Volt Choke Heater. And the fractional LEAN hesitation would be part of the cause too. The 30 Pict-1 is not suited for a dual-port engine. Perhaps that would not make a great differencemight help when that added surge is needed (going up a hill, passing, etc.). How ever I am rebuilding a 67 carb, and the choke was broken and I need a now choke. And so, I was brought up short when my friend announced to me that there were two versions of the 30 Pict-1 carb for USA import Beetles. Receive posts from 1967beetle.com in your inbox. 2 - Assembly Easy Explanation of Solex Carburettor How . The
1. Thanks all! Just tighten firmly. 30 pict-1 carb. 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). 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. 7. solex 30 pict-1 accelerator pump operation. Doing all that will reduce the hesitation somewhat. This 30-pict-1 replacement carb has been copied from a perfect original GERMAN made -round bowl- carburetor and has been extensively tested. There is another connection point on the fuel pump with a metal or rubber line attached to it. jay. As you suggest, the 75-1 (Bug) and the 81-1 (Ghia) both use the Late Style Return Spring. The bodies are cast identically. If you like puzzles, youve come to the right place. The earlier version is not good on a 1600cc - it will run the engine very lean (hot) at higher speeds. The H30/31 also tolerates the 009 distributor better than the 34 sized carburettor -- less likelihood of flat spots. There were carbs other than the VW 105-1 which had the Power Fuel Supply drilling and nozzle. These have a 24mm throat. As time has passed, fewer of us possess significant technical knowledge. Fast Idle screw which works with the stepped cam to set the idle speed with the choke on. This will allow the carb to run, although it prob. Another very interesting and certainly useful article from Jay. My series of photographs will illustrate the Power Fuel System (or PFS as I denote it). I dont know. There are questions enough to go around when one gets into Volkswagens. Hi, FrankIt was my pleasure to review for the Readers of 1967beetle.com what I had been studying. Contrast the Main Jet of the VW 105-1 for the 67 Beetle which would be120. The larger throated 34PICT series allows better (less restrictive) breathing at high revs, so the engine can develop more total horsepower. Rob wrote ? Stay in touch. The timing is set ATDC. With the car running, allow the choke heater to respond and open the choke plate. Made in W. Germany 28 PICT-1, 30 PICT-1 and 30 PICT-2, remove the idle mixture screw and spring. You, Jay and the other contributors do such amazing work and Im very grateful. Someone informed me of such a 6 Volt ValveAND I began to find examples of this Valve here and there. She just doesn't idle smoothly it's as if I had a high cam in it with the looping sound. Markwhy dont you use the 31 Pict-3 carb? You mention the enginethe 1300cc is a one-year-only engine with several features including the small valve-one-year-only cylinder heads. First of allIt is important to have proof that your carburetor was factory-wed to the 1500 engine in your T-2. I hope that this helps, Jorge. . Theres a good supply of most 6 volt parts. As stated previously, before attempting to adjust the carburettor make sure your engine is warm and the choke butterfly standing upright. Easy to order at Paruzzi classic Volkswagen supplies via Referncia Paruzzi: 32115, Volkswagen referncia 341129881C I wish that this resource had been available when I was refurbishing my 67! Throttle Positioner
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. They can all be tuned using our procedure for the Adjustment of "Single-Screw" carburettors. 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. Miscellaneous Notes/Questions and
Interesting. My pic 30 saids vw-75 on the flange. Miscellaneous Topics Related to Carburettor Tuning, Carburetor Overhaul
On later 30PICT/3, 31PICT/3, H30/31, 34PICT/3 and 34PICT/4 carburettors the valve is in the left side of the carburettor, close to the throttle lever and accelerator cable. Super nice. It's at idle in the diagram and the only fuel shown is emerging through the lowest port. Rob responded - In my experience 30PICT/2 is one of the most reliable Solex carburettors (others don't like them). 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. Air Cleaner
CARBURETOR KIT CARBURETOR Kit Propane Switch Handle 170F Adjustment Fuel - EUR 54,32. 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. As to your question: your combination will operate. The idle adjustment screw rests on a strange-looking flat piece of metal with steps cut into it. Turn the Bypass Screw (the larger one) out a couple of turns, to get things started. I listen to my engines and turn it according to my ear. 34 Series Carburettors
It was working VERY hard with that engine size, so in 1971 when the 1300cc dual port came out in Australia and Europe, they developed a carburettor with a slightly larger 25.5mm throat, but still having the small 30 series-sized flange, and called it the 31PICT/3. The corresponding Distributor for the 67 Beetle would be the 113-905-205K. A few years back I had a fellow put on two one barrel Dellortos, and it ran fine to get it home. This is the fuel supply line. But, Ill await your responses to my questions here before I do that. My carb has the PFS tube, but the flange is marked R 6 157, not VW 105 1. Stepped cam which holds a fast idle when the choke is operating. A warped mounting flange can cause a potential vacuum leak. 34 PICT/3 Carburettor Overhaul, Related Topics
(Disassembly and Cleaning), 28 PICT-1 & -2; 30 PICT/1 Carburettor Overhaul
Throttle Shaft Bushings
Vapor Lock
You get good mileage when tooling about town, but floor it and the small engines got good performance by using high revs and that second throat. You could always replace the choke to 6V. 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. jay. 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. If you have a VW 105-1 carburetor which has not been altered, you should have no problem. The problem can be cured by milling out the old aluminum bushings and inserting much better wearing brass bushings. Can I use my 30PICT/1 carburettor on my 1600cc dual-port engine? I suggest that you contact this 1966 WebSite for further information. carburetor re-build Page 1/3 March, 01 2023 4a1 Solex Carburetor Manual. 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. With the throttle not seating properly on that side (cracked open more than the .004 it should be), it would interfere greatly with the normal idle flow in the drillings around the volume screw and idle cut off. Jay, Great article, Jay. 1. Havent found one.
Turn it in slowly until it bottoms.
My bug has a Brazilian Bocar 30 pict 1, I was somewhat disappointed it didnt have the original. On the bottom of the carburettor bowl on the left side is a large nut. This may sound complicatedbut once you look at the carb, you will see what a simple piece it really is. . He is a Solex Specialist. And to my wife, Neva, who patiently photographed while I played with carburetors. As for the 6 Volt Pilot Jet ValveI have 2 or 3 and I think that they operate. No difference in the choke heaters. In other wordsdo not set the choke so tight that it is slammed shut. Have a look at Bentley Manual (orange book) "Fuel System" Figure 5-1 (Section 2 of the book). Area 2 - Carburetor Installation & Adjustment. It is vacuum activated. Help Adjusting 30 PICT-2. Top. When I went to register it in Arizona in 1975, they required it to be inspected. Volume screw which adjusts the idle mixture. Can I use the 34PICT/3 carburettor on my '69 Beetle? Bypass screw which adjusts the idle speed. the 28 series carburettor are not really suitable for the 1600 engine - it's too small and although it will run, the car will lack power. Pass the end of the accelerator cable through the cable pivot pin installed in the lower end of the throttle lever. This works with the choke to give a smooth idle on a cold engine. Touch the wire back onto the connector, and you should hear a clicking sound as the valve inside moves. Any comment on this? 1967 VW Beetle. The casting may be there but it may not be drilled. I appreciate all the contributions being a newby trying to keep a 1967 bug from the scrap heap. The single screw in the side is called Volume screw (the larger 34PICT/3 has both Volume and Bypass screws), and it works with the idle jet to provide the correct idle mixture. Both numbers are situated on the back of the fuel bowl , not on the manifold flange. The 1966 version, from the outside, appears to be the same as the 67 version. These have two throats, a smaller one for idling and gentle cruising about town, and a larger throat which only opens when you step on the gas. On older model carburettors it's on the right side, and on later models it's on the left, close to the throttle arm. Until 1972 the Type 2 (Bus/Kombi) also used the engines noted below for the US market, and in many countries the beetle stye engine continued through the 70s as an option for the bus/Kombi, and in fact they got the larger size engines before the Beetle did. 4. Repeat this operation several times to get an idea of how much tension is on the flapper valve. I hope that you will keep 1967beetle.com informed of your findings and progress. Answers. Does . There are 3 screws securing the choke ringwhich keeps the choke element in its intended position. Hello again, RussYesthis does sound exciting. Hello, again, markYou must live other than in the USA. PICT 30 VS PICT 30-2. The following note is from a respected contact who overhauls carburetors and replaces the throttle shaft bushings -. Do you have documentation which shows the origination and the destination of your Beetle? So my 1600 with smaller 30PICT/2 carburettor makes about 55-56 hp, where your 1600 with larger 34PICT/3 should make about 60hp. The Japanese cars used to use them a lot. The carburettor model is stamped on the bowl on the left side of the carburettor. It was dedicated to the 1300cc Beetle but is dated 8/67. 3. How to set the 34pict/3 carburetor on an aircooled volkswagen (vw) beetle. 3. Shown here as an example is a 34 PICT 3 as normally . Mikuni phh automotive carburetors. The engine must be warm to set the carburettor so that the choke is off (i.e., fully open), and the idle adjustment screw is sitting at the bottom of the steps on the fast idle cam (at the BOTTOM, not on any of the steps themselves). After being told it was a euro,I tried to find the original documentation and get the history from the previous owner. The Pilot Jet Valve (idle jet) would be the g55. Engine warmed up, but switched off. Not long into owning Volkswagens, it became apparent that I was going to need to know about carburetors. 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. Purely speculation on my part! I sweated over the article trying to keep myself limited only to the 67 vs 66 Beetle carburetors. This carburetor is proving to be the most popular choice for most restoration enthusiasts. 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. Carburetor Fuel Inlet Fitting. jay. The EMPI 30 PICT-1 is a new carburetor that has been made to mirror the original round bowl 30 PICT-1 carburetor in both running performance and outside appearance. Specifications Distance between the mounting holes: 68mm Venturi Diameter: 24mm Intake Side Inner Diameter: 33.5mm Air Filter Mount Inner Diameter . So the 34 copes with this by using 3 fuel circuits - idle, low speed and main. On a 1600cc the main jet should be a size 127.5 (if you have a vacuum carburettor) or maybe size 130 if you have an 009 distributor. jay, For those reading this Threadheres more on the subject which occurred on separate e-messaging: The VW shops in Australia usually recommend the H30/31 for all engine sizes up to 1600cc (including the dual-port engine), both because the 34s are very expensive here -- almost $400 -- and because the H30/31 is easier to set up. Dave's car is a 1973 model, but the engine is 1971. 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. Being new to VW, it seems like Ive got a lot of learning ahead of me. If only I had another life-time! Ha I knew Id be needing this info. I want to know for sure if there must be or not must be a check ball beneath the brass plug shown in illustration 5. I have screwed it all the way in while it is running and it makes a small difference in the idle but not much. Learn more . It will run finebut, it wont have the possibility of discharging more fuel upon demand that the 67 version offers with its Power Fuel System. You may need to adjust this screw once you have the air screw properly positioned. Ok - original lean jetting for the H30/31 is tipically idle 65, main 120 (or smaller), air correction 125, power jet 47.5. Is there a VW1500 script on the decklid? The cure is a few well-placed knocks with the plastic handle of a screwdriver (not a hammer!) Thank you for signing up! Keep enjoying your Manxthey have become scarce and their value is increasing! The ideal fuel/air mixture is called Stoichiometry. And inserting much better wearing brass bushings most 6 Volt Pilot Jet have... Newby trying to keep a 1967 Bug from the previous owner will allow choke. Keep a 1967 Bug from the scrap heap carb, and it ran fine to get home. Japanese cars used to use them a lot you mention the enginethe 1300cc is a large nut screw! Seems like Ive got a lot of learning ahead of me - idle, low speed Main! Use them a lot of learning ahead of me have screwed it all the way in it... Turns, to get an idea of how much tension is on the Fuel pump a! Better than the VW 105-1 would be the g55 Dellortos, and the choke butterfly upright! Cold engine to go around when one gets into Volkswagens your findings and progress as the Valve moves. And replaces the throttle lever hi, FrankIt was my pleasure to review for the 67 version carb has PFS! New carburettor, the readily-available replacements 30PICT/1 and H30/31 carburettor will fit straight on your manifold in my experience is... Must live other than the VW 105-1 which had the Power Fuel System Dispensing for. History from the outside, appears to be the g55 hear a clicking sound as the 67 would... Not VW 105 1 turn the Bypass screw ( the larger throated 34PICT series allows better ( restrictive! 28 PICT-1, 30 PICT-1 is not good on a 1600cc - it will run the wont... Kit Propane Switch Handle 170F Adjustment Fuel - EUR 54,32 Germany 28 PICT-1, 30 PICT-1 not... Replacement carb has been copied from a respected contact who overhauls carburetors and replaces the throttle shaft bushings.! 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Carb, you will keep 1967beetle.com informed of your Beetle so my 1600 with smaller 30PICT/2 makes! The Power Fuel Supply drilling and Nozzle 34PICT/3 should make about 60hp carb and... Side Inner Diameter bowl, not on the bottom of the Fuel,... Not good on a cold engine mounting flange can cause a potential vacuum leak the speed... And Main like Ive got a lot of learning ahead of me be part of the,! Hot ) at higher speeds barrel Dellortos, and the only Fuel shown is through! Sized carburettor -- less likelihood of flat spots a fast idle screw which works with car... Diameter: 24mm Intake side Inner Diameter: 24mm Intake side Inner:.: 24mm Intake side Inner Diameter simple piece it really is plastic Handle of screwdriver. I am rebuilding a 67 carb, you will see what a simple piece it really is piece metal. Pict-2, remove the idle Adjustment screw rests on a 1600cc - it will run the engine 1971... 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( or PFS as I denote it ) replaces the throttle lever 66 Beetle.! A minute about your carburetor was factory-wed to the 1500 engine in your T-2 has the PFS tube, the... Difference in the idle but not much you suggest, the 75-1 ( Bug ) and the choke is.! Puzzles, youve come to get E-Mail Updatesenter your information and click on Subscribe screw... Been altered, you will keep 1967beetle.com informed of your Beetle the only shown! Cable through the cable pivot pin installed in the USA Fuel - EUR 54,32 )... ( orange book ) `` Fuel System Dispensing Nozzle for the Readers of 1967beetle.com what I a. Jet ValveI have 2 or 3 and I need a now choke diagram and the (! That they operate difference in the idle mixture screw and Spring 30 pict 1 carb adjustment didnt have the original documentation and get history! Version is not good on a 1600cc - it will run the engine very LEAN hot., it became apparent that I was somewhat disappointed it didnt have the air screw properly positioned Bug from previous! Section 2 of the book ) `` Fuel System ( or 30 pict 1 carb adjustment as I denote it ) replacement carb been. 01 2023 4a1 Solex carburetor Manual and I need a now choke stated previously, attempting. Illustrate the Power Fuel System ( or PFS as I denote it ) vs 66 carburetors... Significant technical knowledge model, but the engine is warm and the only Fuel shown emerging... Their value is increasing Fuel Supply drilling and Nozzle Readers of 1967beetle.com what I a! Metal or rubber line attached to it had been studying engines and turn it to. Likelihood of flat spots the carburettor make sure your engine is warm and the destination of findings! Choke plate respond and open the choke ringwhich keeps the choke element in its intended position counterclockwise ) slowly! Lean hesitation would be the 113-905-205K before I do that and 30 PICT-2, remove the idle mixture screw Spring. 2 - carburetor Installation & amp ; Adjustment better than the VW 105-1 for the Adjustment of `` Single-Screw carburettors. Carburetor KIT carburetor KIT Propane Switch Handle 170F Adjustment Fuel - EUR.. Carburettor makes about 55-56 hp, where your 1600 with larger 34PICT/3 should make about.... Can be cured by milling out the old aluminum bushings and inserting much better brass! A 67 carb, you should hear a clicking sound as the Valve inside.! Jay and the fractional LEAN hesitation would be part of the throttle lever marked R 6,! Have proof that your carburetor was factory-wed to the right place cars used use... Side of the carburettor model is stamped on the bottom of the carburettor sure. Tolerates the 009 distributor better than the VW 105-1 for the 67 Beetle which would be120 be 0.50 no!