He is a Solex Specialist. Lots of info, I learned something I didnt know. You mention the number codes on the flange. 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'. the carburettor down to the sides of the engine, where it attaches Question - I replaced the volume screw when I rebuilt the carburettor a few weeks ago? 360-894-8787 [email protected] http://www.volkzbitz.com. On the earlier 30PICT/1 and /2 series carburettors the idle cut-off solenoid is in the right side of the throat and screws into the back of the idle jet. Engines and engine parts, such as carburetors, get passed around until its almost impossible to track them. If you have the correct 34PICT/3 (which has a 26mm throat) it doesn't need the adapter plate. What year is that ? And so, I was brought up short when my friend announced to me that there were two versions of the 30 Pict-1 carb for USA import Beetles. Classic VW Club Of Louisville Tech Meeting - February 2017. 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. My chart shows these as non-USA only carburetors. Air Cleaner It probably is most suited to this enginejetting, etc.since apparently it was designed for this engine. On the twin port engines, it has to be used with a 30/34 adaptor, since the twin port manifold has a larger diameter than the single port manifold. Have you checked and gapped the plugs lately? Miscellaneous Topics Related to Carburettor Tuning, Carburetor Overhaul 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). 3. 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. Just found youre web site. Dave installed a Pierburg 34PICT/3 carburettor on his '73 Super Beetle, which provided clearance between the accelerator pump linkage and the alternator body. Turn on the ignition (don't start the car), and pull the wire off that solenoid. This works with the choke to give a smooth idle on a cold engine. on the side of the carburettor. . EMPI's 30 PICT-1 carburetor has been made in China to mirror the original "round bowl" 30 PICT-1 in both running performance and outside appearance. Be sure to look for the stamping on the flange. 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. PICT 30 VS PICT 30-2. When restarting, need to floor the pedal as engine is flooded. This may take a couple of minutes or so. This carb needed a small adjustment and till today it works fine and already had a long km behind. These have a 24mm throat. 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. To do this, have an assistant fully depress the accelerator pedal while you adjust the cable. Solex carburetor manual 30 34 pict3 / 31 34 pict 4 german pdf 3.8 mb please right click on the link above and do . 4. As for the 6 Volt Pilot Jet ValveI have 2 or 3 and I think that they operate. Unfortunately hes in his 80s and suffering with dementia/alzheimers and doesnt remember even owning a VW bug. The new bushings will be bored to match the steel shaft. There are 3 screws securing the choke ringwhich keeps the choke element in its intended position. The 30 Pict-1 is not suited for a dual-port engine. It's at idle in the diagram and the only fuel shown is emerging through the lowest port. I discovered this misstep too late in the process to reverse it. It is vacuum activated. Also, some of the 28 series carburetors, with the PFS, had larger-orifice-dispensing tubes. Status: Offline. The 28 series carburettor is really too small for the 1600cc engine. The first thing to do is not set up the idle speed, but to set the idle mixture screw to lean best idle setting. I will note that I have seen 1966 non-power-fuel-system carburetors that still had the drillings in the carb body drilled out. The 65 Beetle came with the 28 Pict-1 carburetor. 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). 6. Hello again, DanRight. by vwlover77 Fri May 05, 2017 6:58 pm. The air speed through the carburettor is governed by the throat size, the engine capacity, and the engine revs. Illustration #1 pictures both German Solex 30 Pict-1 versions. Now, using a longish screw driver, turn the air screw clock-wise very slowly, listening to the engine, When the engine begins to slow, turn the screw counter clock-wise very slowly until the engine seems to peak. 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. Therefore, if you find a 30 Pict-1 with a manifold flange number different from what I indicate in this paper, know that that carburetor came on a T-2 or a Karmann Ghia, or on a Beetle of some origin other than a normal USA import, etc. Pull the cable through firmlydo not try to hoss on ityou dont want to pull the accelerator pedal. The H30/31 carburettor has a slightly larger throat than the 30PICT/2 you have at the moment. Problems tuning a 30 PICT 1 carburetor. There were 1300cc and 1200cc 67 Beetles as well. mtwinger. The cars been off the road for a long time, just looking forward to getting out in it. 28 PICT, 28PICT/1, 30PICT/1, and 30PICT/2 all have one adjusting screw in the left side of the . Shown here as an example is a 34 PICT 3 as normally . The carb tops are not marked to match the bottom halves. 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. Thanks for contacting us! Upon comparing carburetors closely, I had no choice but to agree with the facts. 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. Just tighten firmly. 0 Members and 1 Guest are viewing this topic. The casting is identical, making both carburetors to appear to be identical units. 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 Japanese cars used to use them a lot. Nor did they mismatch tops and bottoms. 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. Good info, Andy! Carburetor Adjusting Tool. I am also in my 70s and havent worked on my 1967 engine in many years and want to buy a new carb. Search Close Menu Close Classifieds. 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. Thats the only way you will be able to determine which carburetor you have. The Mexican BoCar carbs are inherently faulty from the factory. You can expect to wait for a good number of months for the documents. 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 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. 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. 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. 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. Ive had my Manx for 41.5 years. This old carburetor has no way to adjust for this un . (2) when trying to find early return spring part number, I find that it states for up to 65 beetle. I traded a rough 1952 CJ-3A for it in January of 1975. Move the ceramic choke heater slightly clock-wiseto loosen the tension. This carburetor has been Baja tested, and is SCORE approved. I believe that you will find that the Bocar is a Mexican equivalent of the 30 Pic-1. Of course, maybe it's the other way around -- maybe the throttle valve is sticking open, which would make the throttle lever open, too. 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, is 1967beetle.com a site that one can join? Note: Before adjusting the carburettor, it is essential that the accelerator cable be properly adjusted. Jay, Does . Also, how were the Euro 67s jetted? Be sure that the wire to the cut-off valve is securely connected. Just the hole size is different. 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. Hello, Brucecontact Eric, Owner and Site Manager about adding photos to the Comments Section. The Spring was secured inside the Tube using a special Split Washer. PDSIT 2 3 carb choke and throttle plate adjustment Hilltop Workshop | Mikuni Solex 32DID Carb O/Haul Pt. This system was introduced to provide additional fuel under stressful conditions, such as hill climbing or passing or for rapid acceleration. Hosted at Dr. Bob's in Louisville Kentucky. Looking into the top (throat) of the carburetor, you can see the choke valve (flapper). Not long into owning Volkswagens, it became apparent that I was going to need to know about 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 . This is the Idle Cut-off Solenoid -- its function is to cut off fuel to the carburettor when the key is turned off. This carried over into very early 67 Bugs, then was abandoned for a knob release on the seat-back itself. Turn clockwise VERY slowly in until you hear the engine begin to slow. The Pierburg 34PICT/3 Carburettor, Adjustment of "Single-Screw" Carburettors Firstthe carb will operate as is (of course, given that it isnt damaged so that it cant be rebuilt). You may need to adjust this screw once you have the air screw properly positioned. This is a very important and often little understood component of the intake system on VW engines. 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. My bug has a Brazilian Bocar 30 pict 1, I was somewhat disappointed it didnt have the original. Here's a picture of Dave's worn out bushings -. Whoa.more information than I can handle. ===================================== Give this a read, while we are doing some research for you. Hello again Eric, I had an opportunity to pickup a very nice and clean 66 beetle. Between Ed Fall and yourself, Im hoping weve been able to clear up many of the questions people may have about the 30 PICT 1. 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. No difference in the choke heaters. You pose an interesting question. Now unscrew it exactly 2-1/2 turns. The Carburetor Repair Kit. Carburetor throttle return spring. 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. 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. Differences abounded! I dont want too fast or too slow. 28 PICT-1, 30 PICT-1 and 30 PICT-2, remove the idle mixture screw and spring. Fuel Line Input Problems Make sure that the idle cutoff valve is screwed into the carburettor snuggly, and not rattling loose. Why do you think that your Beetle is a Euro? jay, Hey, Donna! Ive recently got a 30 pict 1 as a replacement for a 1300 DP engine. Thank you Jay for your vast knowledge on the carbs. First of allIt is important to have proof that your carburetor was factory-wed to the 1500 engine in your T-2. It had NO check ball in the PFS. A warped mounting flange can cause a potential vacuum leak. Document everything on the carmake an inventory so that you know what you have. My apologies for not showing the VW 105-1.which I had ready to photograph but accidentally put the 78-1 in its place. Top. 2. Mine's exactly the same except that it has the original 30PICT/2 carburettor. The Carburettor - General Description and Discussion, Adjustment of "Single-Screw" Carburettors, Adjustment of "Double-Screw" Carburettors, Miscellaneous Topics Related to Carburettor Tuning, 28 PICT-1 & -2; 30 PICT/1 Carburettor Overhaul, Alternator/Accelerator Pump Linkage Im sure others will chime in as well. Later twin-port 1300s (after 1971) - not sold in the USA - have a 31PICT/3 carburettor, which has a 25.5mm venturi, and a more advanced internal structure, similar to the 34PICT/3 described below. Thank you for your patience! It will make a much larger study for someone who tackles all of that. I understood the 34 picts fit the wider throated 1600 twin ports. Back out turn more, or until the . You mention the enginethe 1300cc is a one-year-only engine with several features including the small valve-one-year-only cylinder heads. Re: 34 PICT 3 Adjustment Woes. Wow great write up! Hello, MarkI am glad to hear from you from Belgium! For emissions and power, the engine has to have a certain amount of vaporized fuel (liquid fuel doesn't burn) for a certain amount of air (often referred to as the "fuel/air mixture"). Keep up the good work, Russ! This is important, and they should be set in this order, as you will start with the engine cold, and finish with it warm. There is an air screw on the driver's side of the carb. The larger throated 34PICT series allows better (less restrictive) breathing at high revs, so the engine can develop more total horsepower. 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). As a result, they are no longer have any sort of manufacturer or retail warranty. . This is the idle fuel cutoff valve (solenoid). Carburettor rebuild / Mikuni Solex Part 1 Haynes vs. Chilton Repair Manuals Simple VW Carb Adjustment Solex Pict 30/31 cleaning and reconditioning step by step Volvo Penta Solex Downdraft . Againthank you for respondingthis is the way by which we increase our horizons. The true 67 carburetor had only the 12 volt choke heater (dismiss any thoughts about a 6 volt choke heater). The 30 Pict-1 Series is an efficient and simple carburetor. In this tiny orifice, just as it takes a sharp 90 degree turn upwards to discharge through the nozzle, there is another check ball. I forced myself to ignore the rest of the mountain of carburetor data which concerns other models, other years and carburetors used in countries other than the USA. First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning to turn at a time). Ok - original lean jetting for the H30/31 is tipically idle 65, main 120 (or smaller), air correction 125, power jet 47.5. Another comment about using the 28PICT or 28PICT-1 carburetor tops is that neither of them have provision for a carb return spring. The choke assembly has been removed and plugged. VW-45-1, Hello, KevinIt always is a journey unraveling the components of these cars after almost 50 years of alterations. But that the 30 Pict-1 for 1966 was otherwise distinct from the 1967 30 Pict-1no way. His son was the one who sold us the car. In my car (1969 Beetle) I have a 30PICT/2 carburettor. I do have the PFS dispensing tube on the tope have of the carb and that tells me it is a 67. Upon comparing carburetors closely, I had no choice but to agree with the facts. It continued in service into 1967 on the 1500 engine but was replaced in 1968 with the 30 PICT-2 which was the first carburetor to incorporate emission controls for that year. Solex 220S Stepped cam which holds a fast idle when the choke is operating. And make sure the timing is not retarded from normal at all, you could even try advancing it a degree or two (say 8-9 degrees at idle), so long as it doesn't start detonating under heavy acceleration (more advance reduces flat spots a little). Mark, you surely are welcome! 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. Any comment? This should allow the carburetor to function when you start the car. 9. The modern H30/31 works well too - it has a 25.5mm throat. The 1600cc DP can flow more air than the 1600cc SP and smaller engines. The power jet usually looks like a brass bolt head in the right side of the carb in a protrusion heading up to the top of the carb, where the delivery tube is. design eit.tovvn will 24 t removing . Thats a complicated discussion for some other venue. The Factory Engine Displacement would have been 1500ccs. Active Classifieds . 07 October 2007, 04:44 . In so doing, I had to register it as a 1975 Reconstructed Vehicle. Thanks for the additional info. 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. I recognize you as one of the knowledgeable persons on the Samba Forums who passes his knowledge to the rest of us! [* WordPress Simple Firewall plugin marked this comment as trash. I understand a little better the reason for your questions. nothing on the flange but stamped on outside of bowl Or, if working by myself, I find that I can come very close by adjusting the cable as follows: With the idle screw against the very bottom of the stepped cam, pull the cable back finger-tight and snug down the screw to secure the cable.
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