Re: ---- How do i brighten up-----
 

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oven cleaner is awsome stuff..spray on hose off usually gets it perfect or I take a water wet shop rag and scrubb it gently while it is foaming..no marks left that way and it usually brings stuff right back...hit your local dollar store and try it out..I seem to run through a case a month here https://www.yenko.net/ubbthreads/imag...ins/tongue.gif

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Oven cleaner you say - huh! Well,I'll just have to give
this project to my wife, seeing as how she's the expert with
cleaning the oven - RIGHT! https://www.yenko.net/ubbthreads/imag...mlins/haha.gif

Steve

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Never had good luck with the oven cleaner, tried it on some tailight housings - just turned a chalky white https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

Re: ---- How do i brighten up-----
 

I found a local business that specializes in rebuilding mostly foreign cylinder heads......majority of which are aluminum. They run the clean, grease free bare heads through a conveyor belt type metal shot blaster. Heads look like new castings from the foundry.......

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Metal shot on aluminum? https://www.yenko.net/ubbthreads/imag...mlins/hmmm.gif That doesn't sound safe.

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Depends on the look you want.When I do a motor and the intake,heads and valve covers are all aluminum,I degreace everything and then paint them with K line Alumi-New.It dries as a flat coloured aluminum.A lot of these parts no matter how well you blast/clean them come out different shades of aluminum.This way everything matches and has that new look.

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"Metal shot on aluminum? That doesn't sound safe."

Call around big cylinder head shops...ask people.....thats what Ive seen done and results look NEW.......maybe depends upon size of shot and air pressure...
Shot blasting is what is done to brand new castings at the foundry!!!!!

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Metal shot in a vibratory bin is what Aluminum foundries use to remove casting sand from fresh castings