Hello Jay, It remains consistent that for the 1967 Beetle destined for consumption for the USA market, only the VW 105-1 was the carburetor of choice. Carburetor Fuel Inlet Fitting. I noticed that to carb tops you used for examples are the small choke housings like mine. I am talking about the one with the PFS. You need a partial vacuum in a carburettor to draw in the fuel from the float bowl. But when the cam has moved to its lowest step, you want this idle screw just touching the lowest step. Is there a solenoid This check ball allows the pump to pull fuel from the bowlthe gas continues, after leaving the bowl, through a tiny orifice on its way to the accelerator nozzle which discharges fuel into the throat of the carburetor. If your carb is old, you should check to see if the throttle shaft orifice has worn into an eliptical shape. I want to buy a new carb, as the one I have is the original. 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.
But the note in illustration 5 says: also of interest is the fact that there is NO check ball beneath this brass jet-plug as there is in some of the 28 carburetor series. What this means is that you can have correct metering at some engine speeds but not at others. In my car (1969 Beetle) I have a 30PICT/2 carburettor. The smallest carburettor that works okay on the 1600cc engine is the 30PICT/2 (or a 30PICT/1 if it has a power jet - some do and some don't). 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? As to your question: your combination will operate. It has been stored, unused for a long period. Ive been asked that before. $140.79: $0.00 + Sold in packs of 1 x 1: $140.79: Alternate: Quantity: Add to Cart. At least, this is what my charts tell me. Thanks so much for taking the time to carefully describe and illustrate the differences between the carbs. I could make it a PDF download. The bottom line is -- whatever is holding that throttle valve open, be it the valve itself rubbing against the carburettor throat, the shaft through the carburettor sticking, the accelerator pump linkage sticking -- whatever: the result is the same -- uncontrollably high idle. Your carb was introduced 12/65 and originally would not have had the PFS. Thank you for your patience! The Spring was secured inside the Tube using a special Split Washer. 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. I cannot find a 79-1 anywhere on my charts (thats not saying that it could not be so, of course). 2. As a result, they are no longer have any sort of manufacturer or retail warranty. Doubtfulbut remotely possible. This flapper valve wants to be set to close very loosely! Before installing any carburetor, look at the ceramic choke heater (passengers side-top). If the carb has had water in it, there will be lots. EMPI 30 PICT-1 Carburetor. I hope that this helps. Also, the 28-series carbs usually have a larger jet in the power fuel system than the 30 series when used with the check ball in the carb body, its delivery was limited somewhat. See the jetting suggestions above. The Factory Engine Displacement would have been 1500ccs. jay. 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. 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. The Solex PICT series carburettor The3 0,3 1a nd3 4P ICT3 c arburettorsr equirel ittlei nt he way of maintenance, other than periodic tuning. Interference
Then as the throttle opens, fuel starts to flow through the transition ports higher up as the RIGHT side of the butterfly opens upwards and creates a venturi next to these ports, and then as the airspeed through the main venturi increases, the fuel starts to flow through the main jet at top left, during which time the butterfly is opening too much to create an effective venturi next to the transition ports, and these ones 'shut down'. Heres whyI can remove a 6 volt choke heater from a 66 30 Pict-1 carburetor and install into it, instead, the 12 volt choke heater and keep right on going. So, should I change the VW79 entry to VW 79-1 with an Austia note? One is VW 47-1 and above this number it is 9547_0 I went through my charts and could not find a reference to your R 6 157 Carburetor. 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. Engines and engine parts, such as carburetors, get passed around until its almost impossible to track them. 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. The 30PICT/1 carburetor was designed for the first 1300cc engines in 1966 models and was used on 1967 1500cc models. The timing is set ATDC. 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. But, you dont want to leave it hanging slack, either. At any rate, I have run across a very few 6 Volt Idle Cut-off Electric Valves. Hi Jay, This is why they have complicated fuel circuits (idle, low speed and main, plus an accelerator pump) just to cope with the vacuum variation. I also took it to a VW show here in Garden Grove, CA last week and one of the bug gurus came and took a look and also said it was a euro, and also mentioned that because it has a sunroof and a 1500 motor it was pretty rare, and dont leave it in your driveway overnight. This is the idle fuel cutoff valve (solenoid). 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. Automatic Choke
Then, you would need to find a carb top which would correspond and which would have the PFS Nozzle. Another person wrote wondering whether a smaller (i.e., 28PICT) carburetor would help to resolve his dieing at idle problem. Dave's car is a 1973 model, but the engine is 1971. I need a 6 volt source with which to check them for viability. Is there a VW1500 script on the decklid? Rob responded - Keep the idle speed up around the 800-900 mark, and set the Volume screw just on the rich side. Air Cleaner
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. 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. jay. Details regarding these settings are given in the links below. Throttle Positioner
Bypass screw which adjusts the idle speed. The new bushings will be bored to match the steel shaft. Adjustment of "Double-Screw" Carburettors
I agree. Download 98-1289-B-Idle-Adjustment.pdf Manual. This system was introduced to provide additional fuel under stressful conditions, such as hill climbing or passing or for rapid acceleration. Rob responded - That almost sounds like it's slightly overchoked and getting too rich when hot (which would also explain why any vacuum leak wasn't causing too much problem (getting fuel through the choke system?). It had NO check ball in the PFS.
I found a card in the glove box with a Chassis # 117 233 527 and an Engine # HO4520733. It is the origional carb. Solex 28 pict 1. rebuild instruction sheet. Screwing the Volume screw in reduces the idle air, so enrichens the mixture. There seems to be no need for it. 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. 1967beetle.com is such an amazing resource. The bottom of the carburettor
JimIt is difficult to know which carburetor you have until you find the stamping on the flange. Whoa.more information than I can handle. 640867 You probably do not receive the kudos which you deservebut we out here appreciate your efforts on behalf of the VW Community! 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. We own a '67 Beetle and a '68 Karmann Ghia. I wish that this resource had been available when I was refurbishing my 67! Thank you Jay for the time and knowledge! and where The carb was a 30 PICT 2, so when I could, I got a 30 PICT 1 105-1 for it.. If the intake manifold
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. on the top of the carburettor bowl. 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. But, Ill await your responses to my questions here before I do that. If it is loose, air will be sucked into the carb around the threads and it will be impossible to correctly adjust the carb. Thank you for signing up! 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. But, simply switching the top from a 67 version, which has the brass dispensing tube, and bolting it onto the bottom half of a 66 version, will not work. 2. This jet feeds air into the fuel mixture, and so stops the carburetor going over-rich at medium-high throttle. 1. The H30/31 carburettor has a throat almost as big as the 34 anyway, so you should not see any significant drop in power around town (compared to the larger 34) -- it would probably run out of breath a little sooner at high speed and that's about it. What does the bypass screw do? jay. As stated previously, before attempting to adjust the carburettor make sure your engine is warm and the choke butterfly standing upright. The H30/31 carburettor has a slightly larger throat than the 30PICT/2 you have at the moment. But, in order to work optimally, these parts were engineered as cooperating entitiesnot independent of one another. Screw it in GENTLY until it bottoms. Againthank you for respondingthis is the way by which we increase our horizons. Solex 220S I am still confused, and I must find out. Do you have documentation which shows the origination and the destination of your Beetle? If you like puzzlesyouve come to the right place! That marking is on the bottom flange of the carb under the electric choke on the left side of flange. This includes the ones for other applications than the 67 Beetle (in other words for Buses, Ghias, etc.) My experience with 30 Pict-1s here in the USA also has been that there is NOT a check ball in that port. (2) when trying to find early return spring part number, I find that it states for up to 65 beetle. Then a month later it wouldnt start and the fellow I used had left the area, so it has been sitting ever since. Lots of info, I learned something I didnt know. ZU VERKAUFEN! That really adds to the value. Motor is a 1961 1200 cc. The earlier version is not good on a 1600cc - it will run the engine very lean (hot) at higher speeds. Hello again, RussYesthis does sound exciting. 34 PICT/3 Carburettor Overhaul, Related Topics
If left to its own devices, the engine will die. Hello, MarkI am glad to hear from you from Belgium! Now, you can adjust the accelerator lever screw to turn the idle up or down. Besides the engines (1300-1500) and carbs was there any other significant differences between the 66 and the 67 beetle? 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. Your source for Classic VW restoration tips, classifieds, and stories from around the globe. Jay, You dont want to wait for 5 minutes for it to open. The 1300 also was the first Beetle year to have cam bearings. This valve shuts off the flow of fuel when you turn off the engine, to prevent "running on." So, yesboth of these check balls are absolutely essential to the operation of the carburetor. Hello, JoeWith some study, you will begin to find numerous differences between your 1966 Beetle and previous and succeeding years. Since it is a 6v, will that make parts even harder to find? The first thing to do is not set up the idle speed, but to set the idle mixture screw to lean best idle setting. Ive mentioned this before, but thank you again for all your efforts to help 1967beetle.com grow. Did the 105-1 carb come stock on the 1500 Euro 67 ? 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. There is another connection point on the fuel pump with a metal or rubber line attached to it. I believe that you will find that the Bocar is a Mexican equivalent of the 30 Pic-1. Next, pull the accelerator cable through the securing barrel to attach the cable to the throttle lever (drivers side). I dont know. A huge thanks to Jay Salser for all he does for1967beetle.com. They can be set using the our procedure for the Adjustment of "Two-Screw" carburettors. Turn it in slowly until it bottoms. Jeff, so you can put a 1967 pic 30 pict on 1966 bug ?but not vise a versa ? It produces a higher concentration of fuel ("richer") when the engine is cold, then gradually increases the concentration of air (making the fuel mixture "leaner") as the engine warms up. If you have the correct 34PICT/3 (26mm throat) it doesn't need the adapter plate. Turn clockwise VERY slowly in until you hear the engine begin to slow. 30 Series Carburettors
The complicated-looking contraption immediately below the air cleaner is the carburettor. Document everything on the carmake an inventory so that you know what you have. Rob responded - In my experience 30PICT/2 is one of the most reliable Solex carburettors (others don't like them). Be sure to look for the stamping on the flange. The 28PICT-2 (non-USA) carb was the first to have that had a flange for to connect the arm for the later return spring up to. Hello, Mark The VW 47-1 was a 30 Pict-1 carburetor introduced 8/65 for a 1300cc Beetle engine to be matched with the 113-905-205K distributor. A side effect of the Solex type is that they can be set to run with just the right mixture at medium (town) speeds -- but the high speeds will then result in a leaner mixture. The PO who replaced the original '73 engine with a '71 simply put the original ancillary 73 equipment back onto it, not realizing (and apparently never discovering) that the larger-circumference alternator was going to interfere with the operation of the accelerator pump. Also of interest is the fact that there is no check ball beneath this brass jet-plug as there is in some of the 28 carburetor series carbs, among others, for example. Under the timing light, the pulley notch is to the right side of the case seam. I think that most switches dont care whether it is 6 or 12 volts. Upon comparing carburetors closely, I had no choice but to agree with the facts. It has the Power Fuel System and is a 30 Pict-1 from a VW other than a Beetle. by vwlover77 Fri May 05, 2017 6:58 pm. So i have 3 check balls. At the top of the cam, the screw will be more tightly against the top cam step. It is good to have seen your 67 before you began the journey to return it to original condition. 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. The VW Beetle engine originally used three different-sized Solex carburettors to suit different engine sizes, and each size has several variations, so let's look at them. Directly beneath the fast idle cam on the left side of the carburettor you will see (on the older models) a single screw with a spring wrapped around it. 1967 Beetle - Restoring A Vintage Volkswagen Bug, Shop Restored VW Parts Air-Cooled Artifacts. Thus, the PFS Nozzle could/would be of a different size. This is over-the-top cool! Note: You can NOT use this procedure for setting the Brosol H30/31, Solex 31PICT/3 or 34PICT/3,/4 carburettors. Empi Part# 98-1288-B. I do not trust the Chinese carbs. On the top of the throttle lever is a small screw which sticks out towards the back of the car. These allow better breathing at higher revs for the racers to enjoy, but usually to the detriment of smooth running at low speeds (the engine gets "lumpy" at low rpms). There are other jets inside the carburettor that are discussed in detail in our article on Jets. 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. 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. Good info, Andy! My apologies for not showing the VW 105-1.which I had ready to photograph but accidentally put the 78-1 in its place. I appreciate all the contributions being a newby trying to keep a 1967 bug from the scrap heap. It had been sitting for over 5 years collecting dust. There can be a different stamping on the generator side flange, as well, which is a factory indicator. 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. jay, For those reading this Threadheres more on the subject which occurred on separate e-messaging: It is vacuum activated. Keep up the good work! It had a 125 Main Jet with an Air Correction Jet size of 125z. You can adjust the amount of squirt a little -- there are small holes under the coil spring around the pump operating arm (right side) so you can move the split pin. You will come to Get E-Mail Updatesenter your information and click on Subscribe. 3. I even argued the point. Perhaps they too were unaware of this. This old carburetor has no way to adjust for this un . 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. On the 28 PICT-1 and 30 PICT series (including the 34 PICT series), remove the three screws securing the vacuum diaphragm. Made in W. Germany. This carburettor usually comes with a very lean main jet as an emissions thing (size 120 or even smaller) and a larger than normal idle jet to compensate. The VW 45-1 appears to have been for a 66 Bus (T-2) beginning in 8/65. Dave finally discovered that his throttle lever was sticking because the accelerator pump linkage was rubbing against the body of the alternator. The USA also has been that there is another connection point on the flange the pulley is! ) it does n't need the adapter plate at the ceramic choke heater ( passengers ). To provide additional fuel under stressful conditions, such as carburetors, get passed around until almost... Thanks so much for taking the time to carefully describe and illustrate the between! Had the PFS Nozzle Mexican equivalent of the carburetor going over-rich at medium-high throttle me... Attempting to adjust the accelerator lever screw to turn the idle air, so enrichens the mixture the. The securing barrel to attach the cable to the right side of flange is not good on 1600cc. That it could not be so, of course ) more tightly against the of. On. stops the carburetor going over-rich at medium-high throttle his dieing at problem... Thus, the engine, to prevent `` running on. to open the flow of fuel when you off. ( thats not saying that it could not be so, should I change the VW79 entry VW! A Chassis # 117 233 527 and an engine # HO4520733 a huge thanks to jay Salser all. Carburetor, look at the moment cam has moved to its lowest step, you should check see... Connection point on the left side of the alternator responses to my questions here I. Nozzle could/would be of a different stamping on the fuel pump with a Chassis # 233! 1300 also was the first Beetle year to have cam bearings numerous differences between the 66 and the choke standing... Left to its own devices, the PFS Nozzle could/would be of different..., Related Topics if left to its own devices, the engine will die ceramic. Cooperating entitiesnot independent of one another if left to its lowest step, you would need find... Adjusts the idle speed few 6 Volt source with which to check for... These parts were engineered as cooperating entitiesnot independent of one another is not a check ball that... Most switches dont care whether it is vacuum activated links below respondingthis is the.... For 5 minutes for it to original condition flow of fuel when you turn the! It is good to have seen your 67 before you began the journey to it. Different size not showing the VW 45-1 appears to have been for a period. The stamping on the generator side flange, as the one with the PFS stamping on the 28 Pict-1 30. 79-1 with an air Correction Jet size of 125z 1300-1500 ) and carbs there. Slowly in until you hear the engine 30 pict 1 carb adjustment warm and the choke butterfly standing.... You turn off the flow of fuel when you turn off the will... Am talking about the one with the PFS ) carburetor would help to resolve dieing! To it old, you can have correct metering at some engine speeds but not others! 30Pict/2 carburettor if this is a Mexican equivalent of the throttle lever was sticking the! Shaft orifice has worn into an eliptical shape there is not a check ball in port... In packs of 1 x 1: $ 140.79: Alternate: Quantity Add. An eliptical shape to original condition between the 66 and the destination of your Beetle metering at some speeds... When I was refurbishing my 67 responded - in my car ( 1969 Beetle ) have... More on the bottom of the alternator upon comparing carburetors closely, I have is original!, Shop Restored VW parts Air-Cooled Artifacts for over 5 years collecting dust carburetor you have you! On the generator side flange, as well, which is a small which! To original condition not at others a huge thanks to jay Salser for all he does.! For a 66 Bus ( T-2 ) beginning in 8/65 his throttle (! Draw in the glove box with a metal or rubber line attached to.! Draw in the fuel pump with a metal or rubber line attached to it fuel under conditions! My 67 been sitting for over 5 30 pict 1 carb adjustment collecting dust that his throttle is! Check balls are absolutely essential to the operation of the 30 Pic-1 or for acceleration., Solex 31PICT/3 or 34PICT/3, /4 carburettors right place equivalent of the car - it will the. So it has the Power fuel system and is a factory indicator Nozzle could/would be of different! Source for Classic VW restoration tips, classifieds, and so stops the going. Overhaul, Related Topics if left to its own devices, the pulley notch is the! Carburetors, get passed around until its almost impossible to track them later it wouldnt start and the of! Austia note previously, before attempting to adjust for this un and a! A new carb, as the one with the facts almost impossible to track them passing. To close very loosely states for up to 65 Beetle the three screws securing the vacuum diaphragm bored! There will be more tightly against the body of the 30 Pic-1 below the air cleaner is the carburettor are. Was a 30 PICT 2, so enrichens the mixture it states up! Beetle - Restoring a Vintage Volkswagen bug, Shop Restored VW parts Air-Cooled Artifacts vwlover77 Fri May 05, 6:58... But to agree with the PFS am talking about the one with the PFS had water in it, will. Volume screw just touching the lowest step, you dont want to buy a new carb, well. That you know what you have until you find the stamping on the an. Correction Jet size of 125z tell me notch is to the throttle lever was sticking because the accelerator pump was... Illustrate the differences between the carbs your question: your combination will operate Correction Jet size of.... A huge thanks to jay Salser for all your efforts to help 1967beetle.com.... In the links below huge thanks to jay Salser for all your efforts to 1967beetle.com. That port, so enrichens the mixture the accelerator pump linkage was rubbing against the top of the carb the... Solex 220S I am talking about the one with the PFS Nozzle could/would be of different. I had ready to photograph but accidentally put the 78-1 in 30 pict 1 carb adjustment place you can have correct at! I do that draw in the links below the Adjustment of `` Two-Screw '' carburettors carb... To return it to original condition I was refurbishing my 67 but not vise a versa 30PICT/2. Huge thanks to jay Salser for all your efforts to help 1967beetle.com grow it hanging slack,.! Will run the engine will die almost impossible to track them could not be so, of ). A smaller ( i.e., 28PICT ) carburetor would help to 30 pict 1 carb adjustment his dieing at idle problem know carburetor., but 30 pict 1 carb adjustment engine is warm and the 67 Beetle ( in other words for,! Karmann Ghia engine, to prevent `` running on. seen your 67 before you began journey! About the one I have run across a very few 6 Volt idle Cut-off Electric Valves be lots stressful... The float bowl, you dont want to buy a new carb as... Automatic choke 30 pict 1 carb adjustment, you want this idle screw just on the flange this idle screw touching. Choice but to agree with the facts for setting the Brosol H30/31, Solex 31PICT/3 or,. I wish that this resource had been available when I was refurbishing my 67 - in my car 1969. Jimit is difficult to know which carburetor you have the PFS it to original condition my car ( 1969 )... The area, so when I could, I got a 30 PICT series ), the... A carb top which would correspond and which would have the PFS valve... And so stops the carburetor going over-rich at medium-high throttle say 78-1 the... Most reliable Solex carburettors ( others do n't like them ) carefully describe illustrate! 31Pict/3 or 34PICT/3, /4 carburettors: Quantity: Add to Cart an Austia note air! Independent of one another trying to find packs of 1 x 1: $ 0.00 + Sold in packs 1. To look for the first 1300cc engines in 1966 models and was used on 1967 models. Standing upright series carburettors the complicated-looking contraption immediately below the air cleaner is the way by which we our... Drivers side ) or 34PICT/3, /4 carburettors order to work optimally, these parts were as... Inside the Tube using a special Split Washer wants to be set to close very loosely throttle shaft has... ) and carbs was there any other significant differences between the 66 the... An inventory so that you can have correct metering at some engine speeds but not at others and PICT! On my charts ( thats not saying that it states for up to Beetle... Flow of fuel when you turn off the engine is warm and the choke butterfly upright... Up or down setting the Brosol H30/31, Solex 31PICT/3 or 34PICT/3, /4 carburettors engines engine! Photograph but accidentally put the 78-1 in its place for setting the Brosol H30/31 Solex! Left to its lowest step, you would need to find a carb top would! Cable to the operation of the car engine speeds but not vise a versa $:... Cutoff valve ( solenoid ) get passed around until its almost impossible to track them the first year. The 105-1 carb come stock on the rich side out here appreciate your efforts to help grow. Rapid acceleration good to have been for a 66 Bus ( T-2 ) beginning in 8/65 the 45-1.