vw beetle carburetor identification
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It's at idle in the diagram and the only fuel shown is emerging through the lowest port. Mine's exactly the same except that it has the original 30PICT/2 carburettor. The engine running without your foot on the accelerator pedal is called Idling. Accelerator Pump But, only the Carburetor for the Deluxe 1967 Beetle was stamped VW 105-1. You might be able to see bright 'rub' marks if the butterfly itself is binding on the sides, or on the outer edges (near where it closes). 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). Carburetor for VW Beetle 30/31 PICT-3 Engine 113129029A 027H117510E Single Port Manifold Automatic Choke Carb with Gasket 4.2 out of 5 stars 34. 7 product ratings. 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. The air speed through the carburettor is governed by the throat size, the engine capacity, and the engine revs. I am attempting to restore vintage VW engine found in an demolished shed. Miscellaneous Topics Related to Carburettor Tuning, Carburetor Overhaul Pass the end of the accelerator cable through the cable pivot pin installed in the lower end of the throttle lever. 2. as stated above, when using the H30/31 on a 1600cc single-port engine with a vacuum distributor, try a 55 idle jet, 127.5 main jet and 125 or 130 air correction jet. Could this be fixed by adjusting idling? Thanks Jay. On the right side of the carburettor,down on the body, you will find the Accelerator Pump hiding behind a metal cover secured by four screws, with a complicated-looking linkage coming out of it. Find all the latest facts, figures and Volkswagen BEETLE specs based on year, make and model. Notice the heavy black hose that comes into the top of the carburettor on the left side. 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. Intentionally blank: Intentionally blank: Related Parts. Carburetor Fuel Inlet Fitting. Volkswagen Beetle Carburetor. jay. Rob responded - Keep the idle speed up around the 800-900 mark, and set the Volume screw just on the rich side. 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. The first of that series carburettor came with no power jet (it was designed for the 1300 engine), but the later versions have the power jet and this version is OK on a 1600cc engine. 4 out of 5 stars. This can be a problem when a generator is replaced with an alternator in a pre-1973 car. Throttle Shaft Bushings 7 product ratings - VW Weber Carb Kit - Beetle (&Super), Dune Buggy, Trike, Type 1 … Dan Lehman, Hi, Dan…I have a simple mind–I have to think things through so that I can understand. Bypass screw which adjusts the idle speed. 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. In photo #1, below, this identification is abundantly clear. The smallest carburetor which 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). Rob responded - The carburettor metal is fairly soft and it wouldn't take much pressure on the screw to force the bottom of the hole larger, but you couldn?t see it with a flashlight down that tiny hole anyway. 30 Series Carburettors Volume screw which adjusts the idle mixture. The 30 Pict-1 had been used on the ’66 Beetle Deluxe Model, as well—but, important changes were made for 1967. 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. Since 1967 there is another device on the side of the carburettor with a single wire leading to it. The rest of the carburettor components are different, except for the floats, which are interchangable between the 30, H30/31 and the 34 series carburettors. Throttle Positioner The carburettor is equipped with a set of jets to "correct" it this situation, and one more set to correct the correction! (In alphabetical order), Accelerator jay, David Brown–my go-to guy for VW Parts information adds the following: The Throttle Return Spring change took place during the 1966 Model year. You might just feel something if you are lucky. Interference Rob wrote - The normal VW carburettors have just one throat (venturi). Let’s look at some of these changes and why they are important for the 1967 Deluxe Beetle. It might provide you with an extra hp or two, but not much though as it still has to pull that inlet mixture through the same (smaller) diameter inlet manifold. I hope that one of these days we can reel you back into the 1967 Beetle Community. Carburetors were stamped by the manufacturer to designate their intended application. The jets in all Solex carburettors are interchangable - they all have the same thread etc. Thanks Jay! Oh, wonderful, Don! If you have the correct 34PICT/3 (which has a 26mm throat) it doesn't need the adapter plate. Your VW Beetle carburetor blends the right amounts of fuel and air and delivers it to the engine. Enjoy up to 15% off your order, Free Shipping, & More! Can I use the 34PICT/3 carburettor on my '69 Beetle? Question - I have a simple question about the Solex 30 PICT/2 carburettor. 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. Volkswagen Carburettors. Someone asked - how do I set up an H30/31 which I have on my 67 bug? It directs fuel into the bowl of the carburettor through a Float Needle Valve (inside the carburettor bowl -- you can't see it without taking the top of the carburettor off). Superb carbs with the range of high quality carburettors, manifolds and rebuild kits for the Volkswagen T1 Beetle at JK. Your source for ’67 Beetle restoration tips, classifieds, and Beetle stories from around the globe. Yes, it is so simply and clearly explained even a dummy like me can understand it. What does the bypass screw do? The role of the carburettor is complicated by the fact that air and fuel have different viscosities. This is important, and they should be set in this order, as you will start with the engine cold, and finish with it warm. $64.00. Everyone loved the new design. Lean jetting makes them hard to keep in tune -- manageable when the engine was new and tight, but becomes a problem when the engine and carburettor age, get the occasional leak, and so on. Thank you for being a loyal Reader! 34 PICT-3 Stock Replacement Carburetor for the Type 1 and 2 Bug, Bus, Ghia & Thing with Electric 12 volt Choke. The 28 series carburettor is really too small for the 1600cc engine. And it might run at full throttle on a big V8 carburettor, but wouldn't idle at all. 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?). 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. The third digit is the last digit of the year, for example 5 would indicate 1965 and 2 would indicate 1972. Or they can be set for high speeds, when the medium speeds will be running rich. Carburetor Repair Kit. 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. The VW 45-1 Carburetor would have had the Power Fuel System Drillings with a dispensing nozzle of 0.75 and no check ball in the Power Fuel Drillings. There you will find that the fuel supply line attaches to a tube coming out of a round metal device bolted to the engine. Nothing looks quite like a Beetle, and nothing runs like one either. So you set the idle speed to 850rpm or so, then use the volume screw to get the fastest idle, then reset the idle speed using the throttle arm screw. 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 modern H30/31 works well too - it has a 25.5mm throat. These carburettors have a 22.5mm throat. Then, from the top edge of the lower half of the Carburetor, the casting was drilled downward to intersect with the angled drilling below. For extra power when needed. Good to hear from you. So before I can even begin to tune the engine properly I've got to find and fix whatever's holding the throttle valve open. 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). In the analysis, the question can be asked: “Does it really matter which Carburetor a person installs onto the Engine of his 1967 Beetle?”, The answer always will be—“For originality’s sake—yes.”. My wife, Neva, and I have been driving and working on VWs since 1976. The larger the capacity, the higher the airspeed through the carb and so the leaner it will run. Do not forget to read about Volkswagen BEETLE problems, recalls and complaints. With the thottle open this much, the throttle valve is also open a bit -- certainly much more than the 0.004 inch it's supposed to be. Note: 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. The first dual port 1600s came in 1971, and have a double letter in front of the engine number, AF or AD for that year. The first two digits identify the model as a Beetle (11) or a Karmann Ghia (14). on the top of the carburettor bowl. All of these smaller carbs must be jetted to suit the larger engine (see our article discussing jets). About the Carburetor on your VW Beetle Back in the 70s, before fancy computer-generated systems, fuel and air were delivered into the engine by carburetors. Take a look into the interior of the Fuel Bowl and a hole can be seen to the above described drillings. Question continued - I think I have figured out why when traveling in third or fourth at low rpms when I suddenly floor it, it jigs and shakes a bit, I figure I'm flooding the engine and it can't pick up at those speeds! Contrast the Main Jet of the VW 105-1 for the ’67 Beetle which would be120. 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). Thanks again Jay! If it's not working, you won't get a proper idle, and you'll get rough running at traffic speeds, too. Confused? Buying a used car? Here's a picture of Dave's worn out bushings -. Engine; if it continues as a single pipe from head to head, Air Cleaner 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. 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. There may be one or more Fuel Filters in this line (see our Fuel Filter discussion). So it is often used with a non-vacuum distributor like the 009. In photo #1, below, this identification is abundantly clear. 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 main jet controls the amount of fuel that is sent to the engine cylinders. (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. 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. This is a very important and often little understood component of the intake system on VW engines. Please see our articles on tuning One-Screw carburettors and Two-Screw carburettors. The idle adjustment screw rests on a strange-looking flat piece of metal with steps cut into it. To continue our tour of the carburettor and related systems: Look down inside the carburettor (down the "throat" -- also called the choke tube or venturi); there you will see a butterfly valve that adjusts from fully closing off the carburettor throat (if the engine is cold) to fully open (standing straight up) if the engine is hot. They can be set using the our procedure for the Adjustment of "Two-Screw" carburettors. Can I use my 30PICT/1 carburettor on my 1600cc dual-port engine? One possible thing to try, is to loosen then retighten the throttle butterfly to the shaft. Automatic Choke These carbs have a 22.5mm throat. Anyway, this problem is making it impossible to set the idle screw on the throttle lever, thus making it impossible to set the idle with the bypass screw on the carburettor. I really enjoyed our phone conversation the other day. The top half of this same Carburetor also displays German manufacturing identification but with NO additional marking to link the top to the bottom half. Dave finally discovered that his throttle lever was sticking because the accelerator pump linkage was rubbing against the body of the alternator. There may not be a car as recognizable as the Volkswagen Beetle. On the bottom of the carburettor bowl on the left side is a large nut. jay. In my car (1969 Beetle) I have a 30PICT/2 carburettor. You can use SOME 30PICT/1 carburettors on a 1600cc engine. The power jet in the right aside should be a 65. This is the throttle lever; the cable is the accelerator cable. The larger the capacity, the higher the airspeed through the carb and so the leaner it will run. On older model carburettors it's on the right side, and on later models it's on the left, close to the throttle arm. Broad choice of inter-related parts for VW Bugs extends to carburettors, carb return springs, inlet manifolds, fuel pumps, pressure regulators, barbed fuel fittings, air cleaners, Weber carbs, choke elements, needle valves and carburettor rebuild kits… Jets 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. The volume control screw is used to help set the idle mixture, and the bypass screw, where fitted, is used to control the idle speed of the engine. Photo #10 reveals the continuance of drilling into the top half of the Carburetor which matches that of the drilling in the bottom half of the Carburetor. Brosol H30/31 Carburettors -ES. Learn more ». The bottom of the carburettor I’m a happy camper! It's important to set the valves, points, timing and to check the choke before setting the carburettor, as they all work together for a smooth running engine. The development of the 30/31 carburettors is interesting... the 30PICT series has a 24mm throat, and it's final development was the 30PICT/3 used in the 1970 1600 single-port engine (in the USA). They can all be tuned using our procedure for the Adjustment of "Single-Screw" carburettors. 101.211 pedestal stand, 113.101.3718, vw (encircled) 28 on the crankcase, 113,101.371B vw 48, on one of the heads. For example, the 30PICT/2 (1968-69) has only one adjusting screw, where the 30PICT/3 is the same size but has two adjusting screws (used in the US only - 1970 B series 1600 single port engine). Interference, Carburettor/Distributor 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. 1. Whereas Carburetors previously had employed a tube-and-spring-and spring keeper return mechanism for the Accelerator Lever, Solex engineers developed a simple way to attach a strong Return Spring which dismissed the former clumsy tube-spring-keeper mechanism. You and Mary take care–hope to talk again soon. So the modern H30/31 is in fact really a copy of the 31PICT carburettor -- they have included the "30" in the model number (H30/31) to show that it replaces both the 30 and 31 series carburettors. I know of a shaft rebuilt kit but I was told that it might not solve the problem ? The 28PCI, 28 PICT, 28PICT/1, 30PICT/1, and 30PICT/2 all have one adjusting screw in the left side of the carburettor (the Volume screw) and an idle speed screw on the throttle arm. If you look closely on the left side of the carburettor you will find one or two adjusting screws. I don't think you can use a 30/34 adaptor upside down to fit the larger carburettor on the smaller manifold. 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). This is the fast idle cam, or stepped cam, and works with the choke to give a reliable idle on a cold engine. 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. 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. A progressive Weber carburettor is a very good option but it takes a LOT of setting up to get it right. I removed the Idle Cam and Choke Plate Lever for easier inspection. Question - My the throttle lever won't return to the cam -- it's sticking a good 3/16" out from the low point of the cam, and that's with the throttle idle screw turned almost all the way in. Someone wrote ? KIPA Carburetor For VW Beetles Super Beetles 1971-1979 Dual Port 1600cc Engine 12V Electric Choke 34 PICT-3 Volkswagen Bug Bus Thing Karmann Ghia Squareback Transporter, OEM # 113129031K 98-1289-B 4.4 out of 5 stars 45 your engine is Single-Port. The H30/31 also tolerates the 009 distributor better than the 34 sized carburettor -- less likelihood of flat spots. LOL Besides, it is fun to know how these things work. Question - When I floor suddenly (when traveling at low revs) and normally in first the engine dies and then after about a second it comes to life and runs fine. 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. Follow the fuel supply line down from the top of the carburettor to just below the Distributor (the round orange or black thing with five heavy wires protruding from the top of it). Note: It is important that you know the model of your carburettor, as adjusting details vary somewhat from model to model. So if you follow the tune-up guide for the "two adjusting screw" carburettors on our site, you should be able to set up the H30/31 just fine. The air correction jet should be about size 125. He has a nose for sniffing them out! 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.) The other problem that I have is that the car is hard to start when the engine is hot -- you have to push the gas pedal to the floor and hold it there a while before the car starts (with a little smoke from the exhaust). each part has its own series of numbers 113. manifold itself before it attaches to the cylinder head.). 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. The Carburettor - General Description and Discussion--, 28 Series Carburettors The ideal fuel/air mixture is called Stoichiometry. This is the idle fuel cutoff valve (solenoid). Product Remark: Works with Air-cooled VW Type 1 with Dual Port manifold. They sit on the twin port manifold with a 30/34 adapter plate. 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