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Q. I need to find a fool-proof way to correctly 're-color' old carburetor bodies to their original "iridescent yellow / gold rainbow" coloring. These bodies are made of a zinc die-cast alloy ('ZAMAK 3 & 5'). Does anyone know the correct procedure for doing this re-coloring ? I appreciate your help! Thank you!

- Great Falls, Montana


A. Hi Larry. I am told that the best way is by zinc plating the carburetor bodies first. To me "fool-proof" probably dictates "best way" not "a possible way". Good luck.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey


A. Regarding recolouring carburetor bodies, particularly zinc die-cast types such as Holleys, Zinctone from Turco is a professional product used in Australia. Available from Avanti in 20L drums. In USA check with Turco division of Henkel Technologies.

Gavin Campbell

2005 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

Q. I need information on the process for recoloring classic car carburetors to the original yellow dichromate color. I believe it is a hot dipping process.

Lynn Palmer
Car restorer/hobbyist - Houston,Texas, USA

Ed. note: We appended your inquiry to a thread which may answer it for you, Lynn. But feel free to follow up if this is insufficient.

September 27, 2012

Q. I have occasion to refinish several small pistol frames made of cast Zamak. The original black has worn from the edges and high spots, exposing the cast material which is now dull gray in color.
What should I do to prep the surface?
Then, what specific formula should I use to achieve a finish color similar in tone to this:

pistol frame made of Zamak

(photo courtesy of
... visit that site for more)

Any after-treatment or sealer or stabilize?


David Parker
- Trumansburg, New York

October 5, 2012

A. Zamak is zinc based alloy so you can use any zinc colouring method. Try next download free booklet on metal colouring and plating:
- there you can find some zinc colouring methods.
Hope it helps and good luck!

Goran Budija
- Zagreb, Croatia

Ed. note Jan 2017: Although wetpaintserv.us was a legitimate site when Goran posted it, it now appears to be a malware site. Don't go there!
Goran has been kind enough to upload his booklet to https://www.finishing.com/library/budija/budija.pdf.

October 6, 2012

thumbs up signThank you very much! Your data, as well as helping with my immediate situation, promises to be a valuable reference for future metal-coloring projects.

David Parker [returning]
- Trumansburg, New York, USA

Carburetor cleaning and refinishing has been a perennial subject. Please see also --

Topic 0338 "Zinc plating & chromating of Carburetors"

Topic 11847 "Restoring gold Iridite color to diecast parts"

Topic 16200 "Zinc plate carburetors & diecastings vs. chromating"

Topic 33779 "Clean and brighten carburetor bodies"

Topic 35697 "Carburetor re-plating / re-coloring"

Topic 37255 "Restoring the yellow dichromate finish on automobile carburetors"

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