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I have a number of marvel and stromberg carbs. I would like to restore a few of them. There may already be a thread on this topic but... what is the general procedure to restore a carb. I assume you have to seperate the different types of metal before dipping them in cleaners and what do you put on them after to retain the new look? thanks for any help
Hi there, Here a message from the Netherlands. A friend of mine owns a Pontiac 1930 2Door Big Six. He bougth it out of a crate en assembled it again. So far, so good. The engine is equiped with a Marvel Carburetor. The fuel was running out of this carburetor, so I fixed the floater valve and floater valve seat. I cleaned the carburetors interior, made new gaskets etc. The fuel stays now where it has to bee. Starting the engine is a big problem. Only playing with the throttle keeps the engine running (due the injected fuel) a bit higher in revs than idle. Idle without playing with the throttle lets the engine stall. The Marvel carburetor is pre-adjusted according the maintanance manual with 1/8" clearance between the air valve and the carburetor wall/body. The airvalve moves smoothly, and comes back slowly. Here some pictures: https://picasaweb.google.com/101253567782863215031/MarvelCarbureter?authkey=Gv1sRgCKavwJrx1sW93AE The inlet and exhaust manifold where already mounted on the cilinderheads/engine and I'm afraid, there may be a vacuum leak. After playing with the throttle, the carbureter is at the inner (bottem) flooded with fuel. The two front cilinders hardly become warm, the last 4 cilinders get a bit warm. The nut and special (unequal) clamp between the exhaust manifold "pipe" for cilinder "One" and the inlet manifold "pipe" for cilinder "One and Two" are missing, Same story at the end of the engine at cilinder "Six and Five" (assuming the front cilinder is "One" and the rear cilinder is "Six"). Compression on all cilinders seems to bee OK, according the "equal" heavy sound when trying to start the engine. Does anyone know the Ignition firing order? I need to check this out to prevent this causing even more trouble. Normaly (most) a six cilinder firing order is 1-5-3-6-2-4. I don't think it wil be that "rare" 1-2-3-4-5-6 sequence. Any suggestions? Thank you in advance and take care of your Pontiac, Jos
Hey guys, my carbs pot metal expanded and may only be usable for another year or two. Currently, with the shape of the carb, the car runs, but roughly. Please let me know if anyone has any available and their condition. Ethan
Well i abandon all ideas to modify the carb. With the high speed jet tube repaired and the cork float resealed. I reassembled the carb. Hung a lawn mower gas tank and gravity flowed gas to it. SUCCESS !! Took the vacuum tank off thoroughly cleaned and reassembled . It seemed to be in really good shape. BUT After running the car 20 or 30 mins with the top off the bowl so i could watch the fuel level it ran dry. As soon as the engine stopped the bowl filled right back up . It would seam that the tank was not empty. Started the engine back up ran it in the shop for quite a while an it did it again. Does any body have any ideas ??? I have posted a link to PHOTOS of this junk HELP DONNY THANKS MobileMe Gallery