General Category > Quadrajet Carb Talk and Tips

Cleaning dark oxidation from a carb?

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58chev:
What do you use? For those of you who "been there done that"

I tried a method to clean and it turned the body of the carb dark, got all the crud and grease/oil off but left me with a dark tint to the aluminum.

I have read that I could soak it in Lacquer Thinner or Diesel?
I don't have access to an ultrasonic cleaner.

Cliff Ruggles:
The method that you used has stripped off the protective finish which was applied when the carburetor was built.  The main body and airhorn got a bath in chromic acid, which reacts with the zinc in the base material and gives them there original appearance, and at the same time protects the metal from oxidation/corrosion, etc.

I would recommend having the castings restored, especially using this new fuel in them as it can be somewhat corrosive to the fuel bowl......Cliff

58chev:

--- Quote from: Cliff Ruggles on January 02, 2015, 06:10:04 AM ---I would recommend having the castings restored, especially using this new fuel in them as it can be somewhat corrosive to the fuel bowl......Cliff

--- End quote ---

I was afraid of that. Is this something that can be done at home? Or will it have to go to a carb shop to get re coated?

Ethan1:

--- Quote from: 58chev on January 02, 2015, 07:33:35 AM ---I was afraid of that. Is this something that can be done at home? Or will it have to go to a carb shop to get re coated?

--- End quote ---

 Send it to, Cliff. He does amazing work recoloring the castings!

Cliff Ruggles:
The cost of the materials would far exceed what it would cost to get them done.  There is a significant learning curve as well, even if you had everything required to do it at home.....Cliff

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