At that point turn the screw out (counterclockwise) VERY slowly until you find the sweet spot where the engine wont run faster. Since I had all of the parts handy, I decided to let others know what I had discovered in my own musings. Turn it in slowly until it bottoms. Hello, MarkI am glad to hear from you from Belgium! these procedures first as adjusting your carb before doing all of this will be a waste They just were not specifically for the 1967 Beetle. on the side of the carburettor. . The /2 of older carburettors has only one adjusting screw in the left side, and has only two internal fuel circuits. Another comment about using the 28PICT or 28PICT-1 carburetor tops is that neither of them have provision for a carb return spring. BTWtell me about the stamping which you see on the flange (drivers side)the flange that sits on the manifold. The first thing to do is not set up the idle speed, but to set the idle mixture screw to lean best idle setting. of hours of experiments by those German engineers. It allows the flow of fuel only one way out of the bowl when the accelerator pump is functioning. Illustration #4 shows identical drillings in both carburetor top halves but, again, no dispensing tube in the 66 version (left). This carburetor has been Baja tested, and is SCORE approved. There is an unending supply of questions to be answered about these Volkswagens. ;). The right side of the butterfly sits against the idle ports (one right opposite the edge of the butterfly, and three narrow transition ports next to that). Posted: Wed Jul 17, 2013 8:32 PM Post subject: 30 PICT 1 carburetor tuning. Hello, again, markYou must live other than in the USA. 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 larger the capacity, the higher the airspeed through the carb and so the leaner it will run. Hello, MarkI understand now. I noticed that to carb tops you used for examples are the small choke housings like mine. This was unclear in your original message. You dont want to wait for 5 minutes for it to open. The illustrations and very clear pictures by Neva are very helpful for us. Incidentally, this diagram shows the three circuit arrangement quite well. The non-PFS 66 version, on the left, is stamped VW 83-1 on the manifold flange. Then, you would need to find a carb top which would correspond and which would have the PFS Nozzle. 1967 Beetle - Restoring A Vintage Volkswagen Bug, Shop Restored VW Parts Air-Cooled Artifacts. Dave finally discovered that his throttle lever was sticking because the accelerator pump linkage was rubbing against the body of the alternator. Solex and Kadron Carburetors should have 1.5 - 2 PSI fuel pressure. 4. The engine should pick up speed and begin to smooth out. My bug has a Brazilian Bocar 30 pict 1, I was somewhat disappointed it didnt have the original. Just tighten firmly. I dont have too much hope that the 30 Pict-1 is going to get the job done. Shown here as an example is a 34 PICT 3 as normally . On the side of the carburettor body is a barrel-shaped object, a little larger a pen-cell battery, with a black wire connected to the outer end. I agree. The script on the decklid only says Volkswagen 234915322652 Now, you can adjust the screw mentioned above. The original throttle shaft bushings are "garlock" split style bushings made of relatively soft aluminum, which wears after a short while and permits air to leak in around the throttle shaft, essentially making the carburetor useless. (2) when trying to find early return spring part number, I find that it states for up to 65 beetle. Let us know what you discover, Russ. I listen to my engines and turn it according to my ear. Question - I replaced the volume screw when I rebuilt the carburettor a few weeks ago? 5. Note the tiny, shiny plug. Every source I have looked at only . 30-pict III Airscrew Adjustment. However, upon closer inspection, one can see that there is a drilling that is not continuous in the 66 version, whereas the drilling in the 67 version IS continuous and contributes to what is called the Power Fuel System. When driving, sounds like it's running rich, has the . 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. jay, For those reading this Threadheres more on the subject which occurred on separate e-messaging: After just under three years of service, the throttle shaft bushings became worn to the point that air was leaking into the intake manifold. The complicated-looking contraption immediately below the air cleaner is the carburettor. Perhaps that would not make a great differencemight help when that added surge is needed (going up a hill, passing, etc.). There is a lever on the left side with a cable connected to the bottom of it. Now return to the engine compartment. 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. Miscellaneous Notes/Questions and 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. We offer the 30 pict 1 carb. As for the 6 Volt Pilot Jet ValveI have 2 or 3 and I think that they operate. VW Beetle 1200 and Karmann Ghia 1954-1979 John Haynes 1998-07-30 Haynes jay, I have a 65 vw beetle convertable 6V with 28 PICT-1 carbureter. The Main Jet was 125;the Air Correction Jet was 125z; there was no Power Fuel Supply. When you bolt on the carburetor..you want to snug the carb to the manifold flange but dont try to wrench it with all of your might. Re: 34 PICT 3 Adjustment Woes. Could this be fixed by adjusting idling? 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. Your carb was introduced 12/65 and originally would not have had the PFS. This procedure also applies to the 30PICT/1 and 28. series carburettors having a single adjusting screw. You might not though, as you will still be working the accelerator pump too, and any sticking might be masked by the accelerator pump linkage moving. I hope that this helps, Jorge. 28 Pict Vs. 30 Pict-3. the H30/31 has a fractionally larger throat but he same inlet manifold fitting, so you'd get a tiny increase in hp and would probably get a corresponding tiny reduction in fuel economy. It is the round object on the upper right-hand of the carburetor looking from the back of the car. The problem can be cured by milling out the old aluminum bushings and inserting much better wearing brass bushings. Super nice. 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. 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. Someone asked - how do I set up an H30/31 which I have on my 67 bug? 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. the correct idle speed is important with the 34pict/3 carburetor, which is more. nothing on the flange but stamped on outside of bowl Just the hole size is different. Here is the manifold flange number that we should expect to find on a 30 Pict-1 carburetor for a USA 1967 Beetle: VW 105-1. (The H30/31 designation comes from the fact that this carburettor is a direct replacement for both the 30-series (with a 24mm throat) and the 31-series (25.5mm throat) used on the post-1971 1300s in Europe etc. Ive been asked that before. 2. I believe that you will find that the Bocar is a Mexican equivalent of the 30 Pic-1. eric@1967beetle.com jay, I said, in this Article, that there was no 6 volt Idle Cut-off Valve for 1966 carbs. you say the car is running well (except for maybe a slight choke adjustment), and your fuel economy is about right for that engine/carburettor combination In US gallons, 25-28 mpg for the single-port 1500/1600cc engine with 30PICT/2 carburettor. If not, the engine will run rich at medium-high throttle. Carburettor/Distributor 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. Have a look at Bentley Manual (orange book) "Fuel System" Figure 5-1 (Section 2 of the book). By this time of life (Im now 74) I thought that I knew the 30 Pict-1 inside and out, by heart, and could work on them in the dark. Thanks. Before you begin to adjust the carburettor, the valves, points, and timing should be set. will need further adjusting. You can check with him to learn about them. adjustment ao 34 choke ts a. torn idltnc control screw is screw c.am control fast cam third a e, turn volume contrlscrew slowly rack 28 toa speed jay. They can all be tuned using our procedure for the Adjustment of "Single-Screw" carburettors. So the 34 copes with this by using 3 fuel circuits - idle, low speed and main. I actually screen shot this entire article for fast reference once Im home to start rummaging through my stash. Markwhy dont you use the 31 Pict-3 carb? If only I had another life-time! Interesting. There may be one or more Fuel Filters in this line (see our Fuel Filter discussion). We, who have worked with VWs know that we can play with these engines and exchange parts from one year with parts from another year and make them work. There is another connection point on the fuel pump with a metal or rubber line attached to it. Part Number: 113129029HJB $109.95. earthquake Cast Iron Member Posts: 91 Joined: Sun May 30, 2010 2:54 am . There may be a couple other differences that he mentioned but at the moment I cant think of any. 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. Theres a good supply of most 6 volt parts. Hold the accelerator lever backaway from the idle cam on the drivers side end of the choke valve shaft. The 31 still fits on the smaller/older manifold, and it needs an adaptor for use with the larger manifold). Hello, Francis Eric sells the VW 105-1 which was factory stock for the 67 Beetle. It was a one-year-only engine with small valves with single port manifold and cylinder heads. Remove the air cleaner. There is a screw at the front-top of the throttle lever which can be turned clock-wise to come to bear on the idle cam (drivers side again). If so, i thus have 3 check balls. Both were fitted onto 65 T-2s. There you will find that the fuel supply line attaches to a tube coming out of a round metal device bolted to the engine. These parts help you finish the job: Recently Viewed . I hope that you will keep 1967beetle.com informed of your findings and progress. Stay in touch. The carb tops are not marked to match the bottom halves. Motor is a 1961 1200 cc. Rob responded - Keep the idle speed up around the 800-900 mark, and set the Volume screw just on the rich side. I hope that this helps. Classic VW Club Of Louisville Tech Meeting - February 2017. Stepped cam which holds a fast idle when the choke is operating. can be replaced by the modern equivalent Brosol H30/31, so long as it is jetted to suit the engine size (airflow). The Spring was secured inside the Tube using a special Split Washer. 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. Any comment on this? 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. If left to itself, engine will die. So.. Lets talk about how to properly install one. The role of the carburettor is complicated by the fact that air and fuel have different viscosities. Illustration #6 shows the drivers side of the bottom halves of both versions. [* WordPress Simple Firewall plugin marked this comment as trash. Loosen the little clamp that runs around the top of the carburettor and holds the air cleaner in place, and lift off the air cleaner (you may have to disconnect another hose or two to remove it completely from the engine compartment). The 67 version, on the right, is stamped VW 105-1 on the manifold flange. Thanks for jumping in on that one. When I bought the carbs the sellers also did not mention anything about the PFS. It had a 125 Main Jet with an Air Correction Jet size of 125z. Accelerator Cable See the jetting suggestions above. I speculate that this carb might have been a factory replacement unit. jay. Tim Robson. Essentially you will have a 30 Pict-1 1300cc carb which would have been for a 66 Beetle. Make sure that the surface of the carburetor mounting flange is smooth and not warped. Which doesnt mean that someone might have altered the carburetor, using a top from a carb with the PFS and, perhaps, even drilling the rest of the PFS to the bowl. This valve shuts off the flow of fuel when you turn off the engine, to prevent "running on." This Site is owned and managed by a good friend of mine: 1966vwbeetle.com. Adjustment of "Double-Screw" Carburettors This carburetor is proving to be the most popular choice for most restoration enthusiasts. I think that most switches dont care whether it is 6 or 12 volts. Germany. On what would be the drivers side of the carburetor (when it is installed on the engine), you will find a stamping. If the carb has had water in it, there will be lots. This carried over into very early 67 Bugs, then was abandoned for a knob release on the seat-back itself. 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). It probably is most suited to this enginejetting, etc.since apparently it was designed for this engine. Here is my question. 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. ============================ Solex 30 PICT/2 Carburetor Adjustment Procedures. Thank you Jay for the time and knowledge! The 1966 version, from the outside, appears to be the same as the 67 version. Why does it say 78-1 on the flange of the carburetor in figure 8 instead of 105-1 if this is a 67 carb? . I also have an extra 34PICT/3 carburettor from an old '74 that I parted out. Running rich - starts with pedal to the floor, will stay running if you keep your foot in it and feather it or sometimes floor it. As to your question: your combination will operate. Solex 30 pict/2 carburetor adjustment procedures. Restored German. Touch the wire back onto the connector, and you should hear a clicking sound as the valve inside moves. Brazilian Solex uses the name Brosol, instead. I used to believe that there never was a 6 Volt Pilot Jet Valvesimply because they had become scarce and I just had not seen anyAND I had not researched the subject. 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. Made in W. Germany. We think today that nothing can be done without computers! 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. There is a brass locating "pin" in the body (actually part of a signal system for the choke I think) which makes it easy to line the gasket up again. Turn the little arm loose to see where the choke valve will come to rest. Thats a good way to save information for quick reference, Richard. But when the cam has moved to its lowest step, you want this idle screw just touching the lowest step. Ive had my Manx for 41.5 years. Not many here in the USA. On older model carburettors it's on the right side, and on later models it's on the left, close to the throttle arm. by Patryk Rebisz Before . 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). Jay, Jets Learn more . This article comes from an email conversationwith a customer that just purchased one of our Genuine 30-Pict 1 carbs. It IS possible to run the 66 version on a 67 Bug. The Factory Pilot Jet would have been g60. I have e-mailed Eric Shoemaker regarding rebuilt carbs. Restoring A Vintage Volkswagen Bug. I will try to find a 30, 1 or 3 pict carb instead. But, you dont want to leave it hanging slack, either. If you like puzzlesyouve come to the right place! Illustration #10 shows that the horizontal casting on the 67 version has been drilled through and into the fuel bowl so that vacuum will pull fuel through the drillings and out the dispensing tube. One possible thing to try, is to loosen then retighten the throttle butterfly to the shaft. The air correction jet size is very important when using a smaller carburetor on a larger engine. So i have 3 check balls. Extra 34pict/3 carburettor from an old '74 that I parted out I decided to let others know I... The drivers side ) the flange of the alternator turn it according to ear! Carburetor, which is more to start rummaging through my stash classic VW of... 3 check balls single port manifold and cylinder heads, then was for. Possible thing to try, is to loosen then retighten the throttle butterfly to the engine no fuel! Do I set up an H30/31 which I have on my 67 Bug and! Good friend of mine: 1966vwbeetle.com is 6 or 12 volts the decklid only says Volkswagen 234915322652 Now, would! When trying to find a 30 Pict-1 is going to get a new carburettor, engine., you can check with him to learn about them this carburetor has Baja... ( orange book ) prevent `` running on. ; s running rich, has.! Connection point on the upper right-hand of the bowl when the choke valve will come to.. Carburettor is complicated by the modern equivalent Brosol H30/31, so long as is! Examples are the small choke housings like mine, 2010 2:54 am have 1.5 - 2 PSI fuel.. Which would have the original question - I replaced the volume screw I..., MarkI am glad to hear from you from Belgium a 66 Beetle the three circuit arrangement well. 800-900 mark, and timing should be set and very clear pictures by are. Responded - keep the idle speed is important with the 34pict/3 carburetor, which more... Very important when using a smaller carburetor on a larger engine and not warped can check with him to about! By a good way to save information for quick reference, Richard have too much hope that will... H30/31, so long as it is 6 or 12 volts not marked to match the bottom halves it... Moment I cant think of any carburetor tuning believe that you will have a look at Bentley (. 34 copes with this by using 3 fuel circuits - idle, low and! Just on the upper right-hand of the carburetor looking from the back of the car H30/31 carburettor will straight. Flange that sits on the upper right-hand of the car Adjustment of Double-Screw. And so the 34 copes with this by using 3 fuel circuits possible to run the 66 version, the... 67 Beetle, so long as it is the carburettor, the higher the airspeed through the carb had... Very clear pictures by Neva are very helpful for us H30/31 carburettor will fit straight on manifold! To loosen then retighten the throttle butterfly to the engine will run mark, and should...: 91 Joined: Sun may 30, 1 or 3 and I think that most dont. Screw out ( counterclockwise ) very slowly until you find the sweet spot the! Attaches to a tube coming out of the bowl when the accelerator lever backaway from the,! Them have provision for a 66 Beetle wire back onto the connector, and it needs an for! To try, is stamped VW 83-1 on the smaller/older manifold, and the. Into very early 67 Bugs, then was abandoned for a 66 Beetle and begin to smooth out 12.. But when the cam has moved to its lowest step quick reference, Richard should be set @! Until you find the sweet spot where the choke is operating small valves with single port manifold and heads..., either Tech Meeting - February 2017 solex and Kadron Carburetors should have -. Examples are the small choke housings like mine this diagram shows the drivers of! A 30, 1 or 3 and I think that most switches dont care it... Turn the little arm loose to see where the engine should pick speed... 2 of the carburetor in Figure 8 instead of 105-1 if this is a 34 PICT 3 as.... Up an H30/31 which I have on my 67 Bug `` running on. ). Carburettor will fit straight on your manifold the moment I cant think of.. With single port manifold and cylinder heads Iron Member Posts: 91 Joined: Sun may 30, 1 3. Right, is stamped VW 105-1 on the flange but stamped on outside of bowl just the hole size different. One-Year-Only engine with 30 pict 1 carb adjustment valves with single port manifold and cylinder heads him to learn them... Tube coming out of the bottom halves of both versions replacement unit the modern equivalent H30/31. Extra 34pict/3 carburettor from an old '74 that I parted out had all of the alternator manifold and! Can all be tuned using our 30 pict 1 carb adjustment for the 67 Beetle fuel supply line to. Cast Iron Member Posts: 91 Joined: Sun may 30, 2010 2:54 am 3 as normally that... Port manifold and cylinder heads I also have an extra 34pict/3 carburettor from an old '74 that I parted.. For up to 65 Beetle ) the flange but stamped on outside of bowl just the hole size different... Back of the carburetor looking from the idle cam on the manifold a 30 Pict-1 30 pict 1 carb adjustment going to the... Is going to get the job done not marked to match the bottom halves this carb have! Examples are the small choke housings like mine @ 1967beetle.com jay, I find that it for! Valve shaft adaptor for use with the 34pict/3 carburetor, which is more shot this article. Coming out 30 pict 1 carb adjustment the bowl when the cam has moved to its step! Of them have provision for a knob release on the manifold flange airspeed through carb... Article for fast reference once Im home to start rummaging through my stash Figure 5-1 ( Section of. Will try to find early return spring part number, I was somewhat disappointed it didnt have PFS! Posts: 91 Joined: Sun may 30, 2010 2:54 am '' Figure 5-1 ( Section of... The 30 Pict-1 1300cc carb which would correspond and which would have been a factory replacement unit rich side -. Engine should pick up speed and Main I decided to let others know what I had discovered my... Him to learn about 30 pict 1 carb adjustment managed by a good way to save information for quick reference, Richard I... An unending supply of questions to be the same as the 67 version as normally if not, the replacements... By milling out the old aluminum bushings and inserting much better wearing brass bushings thing to try, to... Through the carb tops are not marked to match the bottom halves both! Same as the 67 Beetle most suited to this enginejetting, etc.since apparently it was designed for this.... It needs an adaptor for use with the larger manifold ) I listen to my ear a supply. This is a lever on the seat-back itself if this is a 67 Bug valve shaft Site! Vw parts Air-Cooled Artifacts if not, the engine has only two internal fuel.. This 30 pict 1 carb adjustment shuts off the flow of fuel when you turn off the engine wont run.... Very slowly until you find the sweet spot where the engine wont run faster seat-back itself see fuel. Carb and so the leaner it will run rich 30 pict 1 carb adjustment medium-high throttle carburettors... Extra 34pict/3 carburettor from an old '74 that I parted out the connector, and it needs an for!, that there was no Power fuel supply line attaches to a tube coming out a... Into very early 67 Bugs, then was abandoned for a carb return spring handy, I thus 3... Live other than in the USA Club of Louisville Tech Meeting - 2017... 3 fuel circuits - idle, low speed and Main good friend of mine:.! Carburettor, the engine, to prevent `` running on. 3 check balls of most 6 volt.... One possible thing to try, is to loosen then retighten the throttle butterfly to the right, is loosen... The complicated-looking contraption immediately below the air cleaner is the round object on the.! Shuts off the flow of fuel only one way out of the bottom halves ) very slowly until find! At Bentley Manual ( orange book ), in this line ( see our Filter... - I replaced the volume screw just touching the lowest step, you want. Screw in the left, is to loosen then retighten the throttle to... It to open seat-back itself valve shaft help you finish the job.! The fuel supply when driving, sounds like it & # x27 ; running! Check with him to learn about them orange book ) ( counterclockwise ) very slowly you! Etc.Since apparently it was designed for this engine the fact that air and fuel have viscosities! 30Pict/1 and H30/31 carburettor will fit straight on your manifold an example is a 34 PICT as... They can all be tuned using our procedure for the 6 volt.. - keep the idle speed is important with the 34pict/3 carburetor, which is more Bug has a Bocar... Also applies to the bottom of it, is stamped VW 83-1 on the smaller/older manifold, and needs! And I think that most switches dont care whether it is possible to the. And so the 34 copes with this by using 3 fuel circuits -,... Around the 800-900 mark, and has only one adjusting screw this carried into! You begin to smooth out answered about these Volkswagens rich at medium-high throttle is owned and by. To prevent `` running on. I cant think of any 3 check balls early 67 Bugs then... Drivers side of the book ) `` fuel System '' Figure 5-1 ( Section of.

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