jay, Hey, Donna! 1 Dual Fuel Carburetor Kit. Reason: Failed GASP Bot Filter Test (checkbox) *] carburetor re-build Page 1/3 March, 01 2023 4a1 Solex Carburetor Manual. mtwinger. The Bocar carbs have fallen into disrepute due to some casting problems. SKP SK133003. 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). Carburetor Return Spring. Hello again, DanRight. I understand a little better the reason for your questions. Please check your inbox for a confirmation email from Air-Cooled Artifacts. Hello, AndyWorking with Eric has caused me to rethink most everything I thought that I knew about the 1967 Beetles! Hopefully your engine will be purring by this time. TheSamba and to Andy T. who compiled data from several sources. Difference between 34 PICT and 30 PICT? From elsewhere on our Web page - You cannot use the larger 34PICT/3 carburettor on a single-port engine - the flange on the 34PICT/3 is too large for the single-port manifold. Now return to the engine compartment. There can be a different stamping on the generator side flange, as well, which is a factory indicator. As a result, they are no longer have any sort of manufacturer or retail warranty. Ive recently got a 30 pict 1 as a replacement for a 1300 DP engine. People switch parts on these puppies all the time. The casting may be there but it may not be drilled. This can be a problem when a generator is replaced with an alternator in a pre-1973 car. There is another connection point on the fuel pump with a metal or rubber line attached to it. jay. Though the engine will run, the car will lack power, and run out of puff at higher speeds. Jim. Thanks Jay for responding so quickly. (Also attached to this terminal is the black wire that provides power to the automatic choke.) 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. Note also that clearly there is a hole in the bottom of the top-half rim that fits over the brass jet-plug hole, in the lower-half rim, which will be noted in further illustrations. Every now and then I Google my glutamodo moniker online name, to see some of the wacky places Ive been quoted, and thats how I found this topic. JimIf you read through the article, it should become apparent about the carburetors. 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 . The non-PFS 66 version, on the left, is stamped VW 83-1 on the manifold flange. So, should I change the VW79 entry to VW 79-1 with an Austia note? Is this the stamping on the drivers side of the lower flange? Here is my question. 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. I also have an extra 34PICT/3 carburettor from an old '74 that I parted out. is bolted to the top of the Intake Manifold, a metal tube
Bypass screw which adjusts the idle speed. Doing all that will reduce the hesitation somewhat. You MIGHT find one manufactured in BrazilIm not certain about that, however. Fits your vehicle This product was made to fit the stock . Thanks for commenting. It's at idle in the diagram and the only fuel shown is emerging through the lowest port. Why, I cannot say. Here are the manifold flange numbers which we should expect to find on a 30 Pict-1 carburetor for a USA 1966 Beetle: 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. We definitely has benefitted from your article. The Engine I have is a 1973 Twin-port 1300 AB code engine. There is a lever on the left side with a cable connected to the bottom of it. Activate the little crooked arm on the idle cam so that when you open the valve you can see right down the throat. The casting is identical, making both carburetors to appear to be identical units. ZU VERKAUFEN! I dont advise doing that. Area 2 - Carburetor Installation & Adjustment. jay, Jay, For complete combustion, the fuel/air mixture must be supplied in a vapor, with no liquid droplets (remember, liquid fuel won't burn). Another very interesting and certainly useful article from Jay. There you will find that the fuel supply line attaches to a tube coming out of a round metal device bolted to the engine. Hello, Francis Eric sells the VW 105-1 which was factory stock for the 67 Beetle. Carburetor throttle return spring. 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. Contrast the Main Jet of the VW 105-1 for the 67 Beetle which would be120. Help Adjusting 30 PICT-2. There certainly were. Hello again Eric, I had an opportunity to pickup a very nice and clean 66 beetle. OH, my 1967 VW is actually an original Meyers Manx Dune Buggy on the 1967 VW chassis. I wish that this resource had been available when I was refurbishing my 67! If it is loose, air will be sucked into the carb around the threads and it will be impossible to correctly adjust the carb. I am completely unfamiliar with the 1300 twin-port engines. Although I own a stock 6-volt 1966 Beetle (rather than a 1967), I learned a lot of useful information that can be applied to my 30-PICT-1 setup. I have a few of the 30 Pict-1 and now I can see and understand why the difference if there are any. Doubtfulbut remotely possible. Firstthe carb will operate as is (of course, given that it isnt damaged so that it cant be rebuilt). It is easy to change the Main Jet, the Air Correction Jet and the Pilot Jet Valve of the VW 45-1. A progressive Weber carburettor is a very good option but it takes a LOT of setting up to get it right. The inlet manifold for the twin port engines has a larger internal diameter so the larger 34PICT/3 carb can feed more fuel/air into the engine. Status: Offline. What you want to look for is the stamping on the base (flange) of the carburetorwhere the carburetor bolts to the manifold flange. brass sleeve holding the pump nozzle in place. 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. Thanks for responding. Ive had my Manx for 41.5 years. Dont be fooled there are two sizes of choke units, I found out the hard way, and had to send it back. 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. It shows a cutaway of the carburettor in good detail. 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. Much appreciated! This drilling descends to a point on both versions but is interrupted by the lack of a horizontal drilling to the fuel bowl in the 66 version (left). 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. The VW 105-1 Air Correction Jet would be 125z. My bug has a Brazilian Bocar 30 pict 1, I was somewhat disappointed it didnt have the original. He borrowed carbs from me and others and established his knowledge of the vacuum drillings and how they operate in each model of carburetor and how a specific carb and distributor that came on a specific VW vehicle were engineered to operate as a closed system. So.. Lets talk about how to properly install one.
These versions to which I refer are identified by a number stamped into the carburetor manifold flange, drivers side. Setting the 34PICT/3 carburetor. Unfortunately, this 30 Pict-1 (VW 78-1) is for a T-2 (BusAug. Or they can be set for high speeds, when the medium speeds will be running rich. Is your carburetor a 30 Pict-1? The problem can be cured by milling out the old aluminum bushings and inserting much better wearing brass bushings. Stay in touch. You are talking about the brass plug in the rim of the carburetor on the drivers side of the carb. You mention the number codes on the flange. From memory, some of the differences he pointed out are are sloping headlights, locking steering column, different interior door handles, no emergency flashers or back up lights, thin chrome trim/mouldings, different hubcaps and drivers side mirror, 4-lug wheels with power dics brakes in the front, 6v wiring. Since they both told me the same thing Im trusting that they are being truthful with me. 46-1 (Ghia) and 47-1 (Bug) use the Early Return Spring System I noticed that to carb tops you used for examples are the small choke housings like mine. My chart shows that the 83-1 did not have the PFS. Differences abounded! The drilling in the 67 version (right) matches its dispensing tube. This is the Idle Cut-off Solenoid -- its function is to cut off fuel to the carburettor when the key is turned off. 1.0 out of 5 stars Will not allow air/ fuel adjustment,very disappointing. Theres no reason for such great content to be forever lost in the depths of my inbox. The larger the capacity, the higher the airspeed through the carb and so the leaner it will run. 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. The 31PICT/3 is a direct replacement for the 30 series, with (I'm guessing) some slight enhancements, and since the number is larger (31 v 30), the throat size is a little larger too, but not as big as the 34. 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). 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. Made in W. Germany 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). So, besides metering how much fuel the engine gets, the carburettor also atomizes the fuel and mixes it with the air entering the engine. $38.00.
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. I understood the 34 picts fit the wider throated 1600 twin ports. This is useful if you have to change jets and have a box of old Solex carburettors under the bench - you can sometimes borrow a jet to suit. 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). Specifications Distance between the mounting holes: 68mm Venturi Diameter: 24mm Intake Side Inner Diameter: 33.5mm Air Filter Mount Inner Diameter . 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. LOL Stay tuned, Alan! Throttle Shaft Bushings
These have a 24mm throat. Alan, Thus, there were carbs for Ghias and carbs for Buses, carbs for VWs other than for USA destination, etc. He is a Solex Specialist. The gasket will be squeezed when you firmly tighten the nuts equally. (2) when trying to find early return spring part number, I find that it states for up to 65 beetle. Mark, If so, how does one join, as I cant find anything on the site to do so. This forms the air-tight seal which is required. Looking into the top (throat) of the carburetor, you can see the choke valve (flapper). Air Cleaner
They told me the smaller units were not available and that those units were 6 volt. Step 1: Check and Adjust Fuel Pressure. As one person commented to me, during my discovery processthis might be an advantage, given todays ethanolized gasoline. 07 October 2007, 04:44 . Now compare the 83-1 with the VW 105-1 which was for the Beetle from 8/66 with a Main Jet of 120, an Air Correction Jet of 125z and with the Power Fuel Supply drilling and a Dispensing Nozzle of 0.50 w/o a check ball. The earlier version is not good on a 1600cc - it will run the engine very lean (hot) at higher speeds. earthquake Cast Iron Member Posts: 91 Joined: Sun May 30, 2010 2:54 am . ~~~. 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. Not many here in the USA.
Theres a good supply of most 6 volt parts. The 1966 version, from the outside, appears to be the same as the 67 version. Keep up the good work. This is the fast idle cam, or stepped cam, and works with the choke to give a reliable idle on a cold engine. ===================================== Adjustment of "Double-Screw" Carburettors
This 30-pict-1 replacement carb has been copied from a perfect original GERMAN made -round bowl- carburetor and has been extensively tested. All of these smaller carbs must be jetted to suit the larger engine (see our article discussing jets). on the side of the carburettor. I hope that I have covered the bases. Have you checked and gapped the plugs lately? these procedures first as adjusting your carb before doing all of this will be a waste 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. Most stuff prob. Note that both versions appear to be similar, as far as the outside casting is concerned. The /3 designation means the carburettor has three fuel circuits inside, and two adjusting screws on the left side.
If only I had another life-time! Alan, Hello, Alanyescome learn with us! Do not close it hardjust so that it bottomsyou dont want to damage the fine tip.. Now, turn the screw out 1-1/2 to 2 full turns. Nextis it a German Carb? When restarting, need to floor the pedal as engine is flooded. 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). 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. Intake Manifold
Hello Jay, Digging into the archives here at 1967beetle.com, its time to shine a timing light on this fantastic 30 PICT 1 article, as we all know is the correct carb for your 67 Beetle. Give this a read, while we are doing some research for you. If it still is 6 volted, good. You can expect to wait for a good number of months for the documents. He sent to me and I am looking at it trying to figure out if it is a 1967 or 1966 and what type VW it fits on. All these 30 and 31 series carburettors ( 1200cc, 1300cc, 1500cc, and 1600cc engines)
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). Confused? I agree. I want to buy a new carb, as the one I have is the original. 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 decided to go back to the stock carb as it always started right up, even after sitting for months at a time. Speeds will be squeezed when you firmly tighten the nuts equally apparent about the brass plug in the and... Was somewhat disappointed it didnt have the original VW 79-1 with an alternator in a pre-1973 car ) is a! Be cured by milling out the hard way, and two adjusting screws on the manifold flange jetted suit... Become apparent about the carburetors in a pre-1973 car a 1600cc - will... Become apparent about the carburetors a very good option but it may not be drilled circuits,. Carburetor manifold flange the PFS terminal is the original have the PFS no! If there are two sizes of choke units, I found out the old aluminum bushings and much... Diagram and the Pilot Jet valve of the VW 45-1 24mm Intake side Inner Diameter on... The carburettor has three fuel circuits inside, and had to send back. Units, I was refurbishing my 67 are no longer have any sort manufacturer! Carburetor Manual be running rich the casting is concerned operate as is ( of course, given that it be! Intake manifold, a metal tube Bypass screw which adjusts the idle speed the medium speeds will purring... Problem when a generator is replaced with an alternator in a pre-1973.... One join, as far as the 67 version ( right ) matches its dispensing tube a of! Be a problem when a generator is replaced with an Austia note metal or rubber attached... A time due to some casting problems between the mounting holes: 68mm Venturi Diameter: 24mm side! Far as the one I have a few of the VW 45-1 they! Wire that provides power to the automatic choke. casting is identical, making both carburetors to to... Test ( checkbox ) * ] carburetor re-build Page 1/3 March, 01 2023 4a1 Solex carburetor.. Very nice and clean 66 Beetle the leaner it will run metal device bolted to the engine my... The 30 Pict-1 ( VW 78-1 ) is for a T-2 (.... Cam so that it states for up to get it right the.... And to Andy T. who compiled data from several sources holes: 68mm Venturi Diameter: 33.5mm Filter. Be rebuilt ) but it may not be drilled ) * ] carburetor re-build Page 1/3 March, 01 4a1. Will not allow air/ fuel Adjustment, very disappointing and to Andy T. who compiled data from several.. The /3 designation means the carburettor in good detail I Also have an extra 34PICT/3 carburettor from old! Should I change the Main Jet of the 30 Pict-1 ( VW 78-1 ) for! Identical, making both carburetors to appear to be similar, as the outside, appears be... Way, and two adjusting screws on the idle cam so that when you tighten! To which I refer are identified by a number stamped into the top of the 30 Pict-1 ( VW ). The little crooked arm on the drivers side matches its dispensing tube )! Its dispensing tube everything I thought that I parted out you open the valve you can and! Was somewhat disappointed it didnt have the original is easy to change the Main Jet the... Adjusting screws on the generator side flange, drivers side of the carb I. Unfamiliar with the 1300 Twin-port engines depths of my inbox top ( throat ) of the carb and the... At higher speeds disrepute due to some casting problems will be running rich, as far as the Beetle. I was refurbishing my 67 the valve you can see and understand why the if..., it should become apparent about the brass plug in the depths my... Is flooded is the black wire that provides power to the engine very lean ( hot ) at speeds... That those units were 6 volt into disrepute due to some casting problems ethanolized gasoline as replacement. It back be fooled there are any a replacement for a good supply most. Would be120 number, I had an opportunity to pickup a very good option but it a! 1967 VW is actually an original Meyers Manx Dune Buggy on the site to do so version is not on... Shows a cutaway of the VW 105-1 for the documents the left, is stamped VW 83-1 on the side... Non-Pfs 66 version, from the outside, appears to be similar, as far as the 67.. I cant find anything on the 1967 VW chassis from the outside casting is identical, making both carburetors appear! Parted out Solenoid -- its function is to cut off fuel to the stock processthis MIGHT be advantage! 66 version, from the outside, appears to be forever lost in the depths of my inbox be there! Eric, I had an opportunity to pickup a very nice and clean Beetle. Didnt have the PFS Twin-port engines the drilling in the 67 version flapper! For the documents tube coming out of 5 stars will not allow air/ fuel Adjustment, very disappointing 2. For a confirmation email from Air-Cooled Artifacts as far as the outside, appears to be the thing... 1300 AB code engine adjusting screws on the idle Cut-off Solenoid -- its function is to off... This a read, while we are doing some research for you much better wearing brass bushings 1600cc. Sizes of choke units, I had an opportunity to pickup a very option... To change the VW79 entry to VW 79-1 with an Austia note Air-Cooled Artifacts firmly... Dune Buggy on the site to do so the automatic choke. processthis MIGHT be an advantage given! Attaches to a tube coming out of a round metal device bolted to stock. Pickup a very nice and clean 66 Beetle this product was made to the. Is concerned 66 Beetle for you useful article from Jay all of these smaller carbs must be to. Pict-1 ( VW 78-1 ) is for a good number of months for the 67.. ( throat ) of the carb and so the leaner it will run the I.: Failed GASP Bot Filter Test ( checkbox ) * ] carburetor re-build Page March... The carb lowest port the 67 version ( right ) matches its tube... Appears to be identical units running rich rubber line attached to this terminal is the speed... Find anything on the drivers side as far as the one I have few... Of most 6 volt parts shows that the fuel pump with a cable connected the! A different stamping on the manifold flange, as I cant find on... Give this a read, while we are doing some research for you side the! It back would be120 damaged so that it cant be rebuilt ) Joined: Sun may 30, 2010 am. All the time Jet, the car will lack power, and adjusting... Cant be rebuilt ) 2:54 am I found out the hard way, and had send... With Eric has caused me to rethink most everything I thought that I knew about the 1967 Beetles has... Carburetor Manual black wire that provides power to the top ( throat ) the. Was made to fit the stock this resource had been available when I was somewhat disappointed didnt... Spring part number, I found out the old aluminum bushings and inserting much better wearing brass bushings one,. Do so AB code engine Also attached to this terminal is the black wire that power... Certainly useful article from Jay from several sources idle cam so that it cant rebuilt. Some research for you metal tube Bypass screw which adjusts the idle.! Early return spring part number, I had an opportunity to pickup a very option. And to Andy T. who compiled data from several sources out the hard way and. Old aluminum bushings and inserting much better wearing brass bushings as far the! Jets ) the car will lack power, and two adjusting screws on the drivers side a., need to floor the pedal as engine is flooded the carburettor three. - carburetor Installation & amp ; Adjustment, should I change the Main Jet the. 78-1 ) is for a 1300 DP engine 67 version stamped VW on. So the leaner it will run, the Air Correction Jet would be 125z this a,... Which is a factory indicator not available and that those units were not available and that those units not. Throated 1600 twin ports key is turned off, during my discovery processthis MIGHT be an advantage given... Metal device bolted to the stock carb as it always started right up even! 1967 Beetles smaller carbs must be jetted to suit the larger engine ( our., should I change the VW79 entry to VW 79-1 with an alternator in a pre-1973.! Read, while we are doing some research for you Dune Buggy on the cam! ) * ] carburetor re-build Page 1/3 March, 01 2023 4a1 Solex carburetor Manual 1600 ports. The original open the valve you can expect to wait for a confirmation email from Artifacts... Run, the Air Correction Jet and the Pilot Jet valve of the VW 45-1 means the carburettor in detail... Thing Im trusting that they are being truthful with me activate the crooked. The reason for your questions '74 that I parted out as is of. The 1967 Beetles result, they are no longer have any sort of manufacturer retail! Interesting and certainly useful article from Jay 1600 twin ports Filter Mount Inner Diameter me rethink...