Afb carb restoration

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FORMULASCUDA

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Does anyone know the process used to duplicate the original look a new casting on an afb carb body?
 
The professional restorers keep that pretty close to their chest.

Do not blast the body. If you have some scrap aluminum that's oxidized, try some wood bleach on it. Heat up some water and dissolve a table spoon of the powder in it. Watch the part very closely. I did a test and the wood bleach did a good job of removing the oxidation and left the aluminum looking good. If I had a scrap carb, that's what I'd try.
 
One possible problem is sealing the pores in the carb casting. When the carb was first manufactured, the casting underwent an impregnation process using a special sealant and vacuum process. The proces filled microscopic voids in the metal. With age, repeated cleanings, and the corrosive nature of modern gasoline with alcohol, most original castings leak fuel internally.

There are companies that seal castings. I have not used them, but would expect the cost to be greater than a new carb.
 
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