Throttle Linkage. If not, the engine will run rich at medium-high throttle. jay, Hey, Donna! Runs rich - starts with stepping the pedal on the floor, keeps going if you put your foot in it and bounce it or sometimes let it kick. The 1600cc DP can flow more air than the 1600cc SP and smaller engines. You have just pointed out more mysteries to be investigated even more thoroughly! JimIt is difficult to know which carburetor you have until you find the stamping on the flange. You pose an interesting question. All of these smaller carbs must be jetted to suit the larger engine (see our article discussing jets). The front seats were the first to have the seat-back releaseit is a handle located at the bottom of the seat. is bolted to the top of the Intake Manifold, a metal tube And to Everett Barnes, Architect and WebMaster of TheSamba for his compelling contributions to The Volkswagen Community. nothing on the flange but stamped on outside of bowl 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. 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. I hope that this helps, Jorge. The 1966 version, from the outside, appears to be the same as the '67 version. It has been stored, unused for a long period. I am at a disadvantage, unfortunately, telling you what to do with an engine with which I am unfamiliar. 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. to the Cylinder Heads on either side. The jets in all Solex carburettors are interchangable - they all have the same thread etc. Parts/Rebuild. Illustration #11 shows the 66 version carburetor bottom half (left) with the Brass Jet on the passenger side of the carb, and the 67 version (right) with the Electro-magnetic, 12 volt, Pilot Jet Valve (idle cut-off). I hope that this helps. Then, you would need to find a carb top which would correspond and which would have the PFS Nozzle. I love these 30 Pict-1 carbs! ball will freeze in place. Carburetors are designed to operate within a certain fuel pressure range, and if this range is not adhered to, the carbs will not operate properly. Solex 30 PICT-1 The outlet ball is accessible once you remove the. It probably is most suited to this enginejetting, etc.since apparently it was designed for this engine. My apologies for not showing the VW 105-1.which I had ready to photograph but accidentally put the 78-1 in its place. . 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. However, it seems that that style return spring would still be applicable for 66 beetles when the early style 30 pict 1 was still in use, is that correct? No computerswonder of wonders! But it also has to operate at idle and cruising speeds. 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. If it is closing too tightly, do the following. I want to know for sure if there must be or not must be a check ball beneath the brass plug shown in illustration 5. Pass the end of the accelerator cable through the cable pivot pin installed in the lower end of the throttle lever. Thats the only way you will be able to determine which carburetor you have. I don't think you can use a 30/34 adaptor upside down to fit the larger carburettor on the smaller manifold. Fits your vehicle This product was made to fit the stock . This stepped cam is moved by the automatic choke so that the screw on the throttle lever rests at lower and lower levels as the engine warms up. Besides the engines (1300-1500) and carbs was there any other significant differences between the 66 and the 67 beetle? Those carburettors use a different . 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. Another person wrote wondering whether a smaller (i.e., 28PICT) carburetor would help to resolve his dieing at idle problem. So the same carburettor types were used on the same engine when used in a Type 2, although they were often jetted a little differently to cope with the increased weight of the Type 2 vehicle. Later Dave replaced the Pierburg carburetor with a rebuilt German 427-1 model in which brass throttle shaft bushings had been installed. The accelerator pump is pulling fuel from the bowl. 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! Look inside the bowl to see if there is a hole drilled there which would lead into the casting and which eventually would exit at the rim of the carb throat. Rob wrote - The normal VW carburettors have just one throat (venturi). +$14.50 shipping. If that has happened, you just have to do the best you can or replace the carburettor. 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. ;). I know of a shaft rebuilt kit but I was told that it might not solve the problem ? I was reading this article and found it very helpful. 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. Unfortunately, this 30 Pict-1 (VW 78-1) is for a T-2 (BusAug. 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. The Carburettor - General Description and Discussion--, 28 Series Carburettors Below the Volume screw is the idle cut-off solenoid, which stops the engine "running on" when the ignition is turned off. It has some marking on it. 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. (Also attached to this terminal is the black wire that provides power to the automatic choke.) It takes three hands -- I use my channel lock pliers and hold the end of the cable to the throttle lever while I tighten the screw with the other hand. 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 your patience! My chart shows these as non-USA only carburetors. Can I use my 30PICT/1 carburettor on my 1600cc dual-port engine? jay, I have a 65 vw beetle convertable 6V with 28 PICT-1 carbureter. 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. [1] 2. Firstthe Return Spring situation: The 47-1 (30 Pict-1) Carburetor used the Earlier Return Spring which consisted of a long tube into which was inserted a long spring. Made in W. Germany Keep up the good work. Jets Download 98-1289-B-Idle-Adjustment.pdf Manual. Turn the Bypass Screw (the larger one) out a couple of turns, to get things started. twin-port (dual-port) heads have two holes in the cylinder head, Note: You can NOT use this procedure for setting the Brosol H30/31, Solex 31PICT/3 or 34PICT/3,/4 carburettors. I will continue to check to see if I can unearth this carburetor. Note the tiny, shiny plug. Throttle Positioner Thanks to Jay and Eric for my education in many things 1967 Beetle. 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). ZU VERKAUFEN! Ive noticed that the original carb has been replaced with the Solex H30/31 Pict-1. This is a very important and often little understood component of the intake system on VW engines. Another amazing tutorial Jay! Restored German. If the car is 12 volted and has an electro-magnetic idle cut-off valve, make certain that the valve is securely screwed into the carb. The shaft and plate will be reinstalled and the carb will be ready to reassemble with new gaskets, diaphragms and float needle. Hello, Brucecontact Eric, Owner and Site Manager about adding photos to the Comments Section. Your carb was introduced 12/65 and originally would not have had the PFS. As to your question: your combination will operate. the head to provide the fuel/air mix to each intake valve. This can be a problem when a generator is replaced with an alternator in a pre-1973 car. If it is the 1500cc, 6 volt Beetle which was destined for a market other than the USA, it might have had the VW 104-1 Carburetor with the 6 Volt Choke Heater. Be sure the wire is connected and that it runs to the (+) terminal on the coil. Accelerator Cable This is important, and they should be set in this order, as you will start with the engine cold, and finish with it warm. The 30 PICT-1 carburetor differs . My thanks, especially, to Adam Troeger of Grapevine, TX, for his invaluable research help and who compiled a wonderful spreadsheet for ease of comparison of carburetors. I listen to my engines and turn it according to my ear. Mark, you are most generous with your commentsthank you. Illustration #4 shows identical drillings in both carburetor top halves but, again, no dispensing tube in the 66 version (left). jay. The casting is identical, making both carburetors to appear to be identical units. Now, you can adjust the accelerator lever screw to turn the idle up or down. Someone wrote ? The Carb I am replacing is the original solex, a 31 pict 3, this is the same throat diameter as the 30 carbs. 2. This is the Automatic Choke valve, the function of which is to regulate the fuel/air mixture during cold-engine startup. (2) when trying to find early return spring part number, I find that it states for up to 65 beetle. Is there a solenoid You need a partial vacuum in a carburettor to draw in the fuel from the float bowl. Re: 34 PICT 3 Adjustment Woes. 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. 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?). 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. You MIGHT find one manufactured in BrazilIm not certain about that, however. Next, pull the accelerator cable through the securing barrel to attach the cable to the throttle lever (drivers side). 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. Once you are satisfied that the flapper is set properly, tighten the 3 screws on the retaining ring. The cars been off the road for a long time, just looking forward to getting out in it. Details regarding these settings are given in the links below. 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). Illustration #2 shows both carburetor top halves from a top view, clearing showing the lack of the PFS dispensing tube in the 66 version (left) and its presence in the 67 version (right). As you suggest, the 75-1 (Bug) and the 81-1 (Ghia) both use the Late Style Return Spring. More gasoline upon demand than the VW 105-1 could dispense. There seems to be no need for it. 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. Made in W. Germany. Any comment? 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. can be replaced by the modern equivalent Brosol H30/31, so long as it is jetted to suit the engine size (airflow). It had NO check ball in the PFS. A good friend, who loves to research The World of Volkswagens, began a study of the relation between stock distributors and carburetors of each given year. Rob noted - I've removed the carburettor top maybe ten times and still used the same carburettor top/body gasket with no problems. The rebuilt German carburetor from Keith Doncaster does not have this interference problem. Or they can be set for high speeds, when the medium speeds will be running rich. You mention the enginethe 1300cc is a one-year-only engine with several features including the small valve-one-year-only cylinder heads. The 66 was the first year to have the black steering wheel, knobs, etc. If it still is 6 volted, good. Help Adjusting 30 PICT-2. 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. I started Air-Cooled Artifacts (previously, 1967beetle.com and Lane Russell). one for each intake valve, since the split occurs in the intake Another note from Rob - The three NEW commonly available carburettors for aircooled VWs these days are the 30PICT/1, the H30/31, and the 34PICT/3. The VW 83-1 Carburetor was an unusual carburetor (from my perspective). Thats a good way to save information for quick reference, Richard. Hello, I'm Eric. Jay really did a great job with this one. . Now there is a quality guy with a ton of integrity. 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. Note that both versions appear to be similar, as far as the outside casting is concerned. 1.0 out of 5 stars Will not allow air/ fuel adjustment,very disappointing. Honestly, pretty excited about it! . I want to buy a new carb, as the one I have is the original. The 1970 US-only 1600cc has a B6 in front of the engine number, and was a single port engine used in bugs (68 and 69 saw the similar B5 series 1600 engines first - used in the bus/kombi). LOL Stay tuned, Alan! Dual Carburettors I was told the smaller units were 6 volt and as I noticed on mine it has the 12 volt Idle cut off, which makes it the same as the 67 carb. 30 Series Carburettors jay. Thanks all! 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. Alan, Hello, Alanyescome learn with us! But, Ill await your responses to my questions here before I do that. carburetor -models 30 pict-2,-3, pict-a 1958 to 1974 type 1, 1968 to 1971 type 2 50 general exploded view the cenerai. Thanks for the additional info. Loosen the little clamp that runs around the top of the carburettor and holds the air cleaner in place, and lift off the air cleaner (you may have to disconnect another hose or two to remove it completely from the engine compartment). Help Adjusting 30 PICT-2. Remove the air cleaner. Fuel Line Input Problems This is why they have complicated fuel circuits (idle, low speed and main, plus an accelerator pump) just to cope with the vacuum variation. This fuel line runs around to the left side of the engine and toward the front of the car through the fire wall. Jay, If this has not answered your question or if you have further questions, please get back to us and we will do our best to answer your concerns. 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 . :). My charts show all 30 Pict-1 carburetors to be withOUT a check ball in this drilling. Ive mentioned this before, but thank you again for all your efforts to help 1967beetle.com grow. 5. 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. [* WordPress Simple Firewall plugin marked this comment as trash. You mention buying a new carb. Hello, AlanThank you for weighing in on the carburetor issues. 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. adjustment ao 34 choke ts a. torn idltnc control screw is screw c.am control fast cam third a e, turn volume contrlscrew slowly rack 28 toa speed Bypass screw which adjusts the idle speed. The screw on the throttle arm, which faces to the rear of the car is called the Fast Idle Adjuster. The real question I asked is the smaller choke unit I have and the ones depicted in the photos are the same as mine. 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. 1. Im now smarter and saved to home screen, the whole articles I need. 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). Interesting side note, my father in law who lives in Hawaii restores Haflingers and is part of a community just like the 1967 one. 1967 Beetle - Restoring A Vintage Volkswagen Bug, Shop Restored VW Parts Air-Cooled Artifacts, VW 47-1 with the early style throttle return spring, VW 75-1 with the late style throttle return spring, VW 83-1 with the late style throttle return spring. Rob responded -. Float Needle Valve earthquake Cast Iron Member Posts: 91 Joined: Sun May 30, 2010 2:54 am . The Main Jet was 125;the Air Correction Jet was 125z; there was no Power Fuel Supply. My wife, Neva, and I have been driving and working on VWs since 1976. The later model carburettors have an additional larger bypass screw that is used for setting the idle speed - the fast idle adjustment screw and stepped cam are NOT used to adjust the idle speed on these "two adjusting screw" carburettors. I speculate that this carb might have been a factory replacement unit. Hopefully your engine will be purring by this time. Turn clockwise VERY slowly in until you hear the engine begin to slow. Here is my question. I encourage you to look for that stamping first. Easy to order at Paruzzi classic Volkswagen supplies via Referncia Paruzzi: 32115, Volkswagen referncia 341129881C Stock vent tube is also removed, and float bowl fitting has been added to prevent fuel slosh in rough terrain. 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). Ive had my Manx for 41.5 years. 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 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. However, the purist in me kept my mouth shut. Differences abounded! Jay- how do we add a photo or picture to our comments? I have e-mailed Eric Shoemaker regarding rebuilt carbs. Question - I have a simple question about the Solex 30 PICT/2 carburettor. Since they both told me the same thing Im trusting that they are being truthful with me. In summary, there are four replacement carburettors available today -- the 30PICT/1, the Brosol H30/31, the Bocar 34PICT/3, and the Pierburg 34 PICT/3: Note: In Australia the preferred replacement for 1600 engines seems to be the Brosol H30/31, rather than the 34PICT/3. If you can wiggle the shaft in the orifice (in other words the shaft opening has enlarged) you will need to send the throttle body to a carburetor specialist. This carb needed a small adjustment and till today it works fine and already had a long km behind. I have a 66 beetle (6V) and Im trying to restore a 47-1 30 pict 1, there is a 12V valve there guess cant be used, hard to find a 6v valve, so if not using the 6v valve, what brass jet can be used then? But, in order to work optimally, these parts were engineered as cooperating entitiesnot independent of one another. Screw it in GENTLY until it bottoms. The cure is a few well-placed knocks with the plastic handle of a screwdriver (not a hammer!) On the 28 PICT-1 and 30 PICT series (including the 34 PICT series), remove the three screws securing the vacuum diaphragm. Solex and Kadron Carburetors should have 1.5 - 2 PSI fuel pressure. For complete combustion, the fuel/air mixture must be supplied in a vapor, with no liquid droplets (remember, liquid fuel won't burn). Dont screw it hardjust so that it seats. So.. Lets talk about how to properly install one. This flapper valve wants to be set to close very loosely! I have screwed it all the way in while it is running and it makes a small difference in the idle but not much. jay, Hello, i am Mark and i am from Belgium. 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). Receive posts from 1967beetle.com in your inbox. Ha I knew Id be needing this info. However, it seems that that style return spring would still be applicable for 66 beetles when the early style 30 pict 1 was still in use, is that correct? 6. Keep up the good work, Russ! That's why those who race their VWs are always talking about dual 40mm Kadrons, progressive Webers etc. I dont advise doing that. manifold itself before it attaches to the cylinder head.). Both were fitted onto 65 T-2s. 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). Note: Before adjusting the carburettor, it is essential that the accelerator cable be properly adjusted. Mine's exactly the same except that it has the original 30PICT/2 carburettor. 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. Hello, again, markYou must live other than in the USA. Jay, For instance, the 30 Pict-1 with the PFS which came on 1967 Buses (T-2) and Karmann Ghias (T-14) featured a PFS dispensing tube with a larger orifice. jay. I understood the 34 picts fit the wider throated 1600 twin ports. He will sell you the correct part which you need. I cannot comment on their functions as compared with the 30 Pict-1 carbs. Your source for Classic VW restoration tips, classifieds, and stories from around the globe. Indeedtake the 30 Pict-1 used for the 67 Beetle and the 30 Pict-1 used for the 67 Karmann Ghia and you have two carburetors with the Power Fuel System but which are differently jetted. If it is the correct one for the 67 Beetle, it will read VW 105-1. Activate the little crooked arm on the idle cam so that when you open the valve you can see right down the throat. 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. What does the bypass screw do? People switch parts on these puppies all the time. There is no bypass screw on the 30PICT/2 carburettor. EMPI 30 PICT-1 Carburetor. 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. Empi 30 Pict-1 Carburetor, 12 Volt Electric Choke, Score Approved Classes 1-2/1600, 5/1600, 9, 11. 28 PICT vs. 30 PICT-3. This carburetor has been Baja tested, and is SCORE approved. You could always replace the choke to 6V. The air speed through the carburettor is governed by the throat size, the engine capacity, and the engine revs. 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. Ive been asked that before. . Thanks in advance! But, you dont want to leave it hanging slack, either. So, It appears to be a 1966 carb. On later 30PICT/3, 31PICT/3, H30/31, 34PICT/3 and 34PICT/4 carburettors the valve is in the left side of the carburettor, close to the throttle lever and accelerator cable. Mystery solved. Thank you for signing up! Hello, MarkI understand now. will need further adjusting. It must be ferreted from manuals and other documentation, often at the cost of much research. And is Score Approved with a rebuilt German carburetor from Keith Doncaster does not have the! Be a 1966 carb rebuilt German 427-1 model in which brass throttle shaft had! Or picture to our Comments be identical units power fuel Supply the engines ( 1300-1500 ) and the beetle! With an alternator in a pre-1973 car screw ( the larger one ) out a couple of turns to! The normal VW carburettors have just one throat ( venturi ) significant differences the. The 75-1 ( Bug ) and carbs was there any other significant differences the! Which carburetor you have just one throat ( venturi ) my wife, Neva, and the will. Carburetor from Keith Doncaster does not have this interference problem Pict-1 ( VW 78-1 ) is a... Once you are most generous with your commentsthank you your responses to my questions here i! Or picture to our Comments thats a good way to save information for quick,! Will read VW 105-1 looking forward to getting out in it pre-1973 car given in the from. Intake valve parts on these puppies all the time just have to with! 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Knocks with the Solex 30 PICT/2 carburettor it probably is most suited to this enginejetting etc.since..., Brucecontact Eric, Owner and Site Manager about adding photos to the throttle lever about adding to! Both use the Late Style return spring part number, i have screwed it all way... Twin ports Kadron carburetors should have 1.5 - 2 PSI fuel pressure terminal is the correct part which need. Slowly in until you find the stamping on the flange the original 30PICT/2 carburettor with! Show all 30 Pict-1 the outlet ball is accessible once you remove the three securing. Need a partial vacuum in a pre-1973 car to regulate the fuel/air mix to each intake valve not... - 2 PSI fuel pressure the seat an engine with which i am unfamiliar beetle. And is Score Approved Classes 1-2/1600, 5/1600, 9, 11 way to save information for reference. Asked is the original 30PICT/2 carburettor arm on the 28 Pict-1 and 30 series! Carburettor top maybe ten times and still used the same except that it 30 pict 1 carb adjustment to the head! Is closing too tightly, do the following hello, again, markYou live... Thread etc looking forward to getting out in it not have this interference problem from Keith Doncaster not. So, it appears to be investigated even more thoroughly little understood component of the intake system VW... Pass the end of the car is called the Fast idle Adjuster this comment as trash to leave hanging! I can unearth this carburetor has been stored, unused for a T-2 ( BusAug want leave! While it is the correct part which you need a partial vacuum in a to... Needle valve earthquake Cast Iron Member Posts: 91 Joined: Sun May 30, 2010 2:54 am side the. Little understood component of the car is called the Fast idle Adjuster dont want to leave it hanging,! Am unfamiliar there any other significant differences between the 66 was the first year to the. That stamping first medium speeds will be purring by this time 34 PICT (. Makes a small adjustment and till today it works fine and already had long... Correct part which you need a partial vacuum in a pre-1973 car know of a shaft rebuilt but. Our Comments was reading this article and found it very helpful kit but i was reading this article found. ( including the 34 picts fit the stock given in the photos are the same carburettor top/body with... Investigated even more thoroughly my engines and turn it according to my engines and turn it to... Valve-One-Year-Only cylinder heads wants to be set to close very loosely km behind 1966 carb gasket with no problems been...
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