Melted engine paint on exhaust ports? - Pontiac GTO Forum
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post #1 of 12 (permalink) Old 06-19-2011, 08:48 PM Thread Starter
 
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Melted engine paint on exhaust ports?

I had my engine rebuilt... The machine shop did a beautiful job. I put the engine in and I let it get too hot and the paint burnt off around the exhaust ports on the heads. Now that it is tuned and running cooler is it worth touching up the paint or will it happen again?

When I was breaking in my engine it climbed to about 220 before I turned it off. I invested in an engine shroud and it runs great around 190.


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post #2 of 12 (permalink) Old 06-19-2011, 09:01 PM
 
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i used the duplicolor pontiac metallic blue and had it up to over 220 after shutdown before i got my fan and shroud correct and it barely discolored it on the heads no flaking, i would touch it up, you know that flaked paint will catch your eye every time you open the hood...
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post #3 of 12 (permalink) Old 06-19-2011, 09:13 PM
 
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Learn to live with it. The only fix is unpainted aluminum heads.. It's a right of passage for a Pontiac owner, seeing your pretty paint go up in smoke.

Burning rubber since 1982!!
My photobucket, lots of dif car pics.
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post #4 of 12 (permalink) Old 06-22-2011, 01:20 PM
 
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The only sure way you won't have to repaint the heads is to put a Chevy engine in.
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post #5 of 12 (permalink) Old 06-22-2011, 10:33 PM
 
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If you paint your engine with Dupont Imeron, it does not burn or flake.
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post #6 of 12 (permalink) Old 06-23-2011, 08:43 AM
 
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Another solution is to paint that area with high temp silver or cast gray paint. The Pontiac blue isn't available in a paint rated high enough to withstand exhaust port temps. The cast gray or silver isn't a perfect solution, but it's better than the rust color that you wind up with otherwise.
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post #7 of 12 (permalink) Old 06-24-2011, 07:41 PM
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What these guys said. The burnt paint on the heads and parts of the intake are just part of the Pontiac Experience. Personally, it doesn't bother me a bit.
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post #8 of 12 (permalink) Old 06-24-2011, 09:10 PM
 
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It just means your motors too mean for paint....
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post #9 of 12 (permalink) Old 06-25-2011, 09:44 AM
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I love that!!! Consider that line stolen, sir ---- just add the royalty fees to my bill....


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post #10 of 12 (permalink) Old 06-25-2011, 05:32 PM
 
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Our engines make so much power the paint wont even stay on em.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Paint Shop Discussions

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