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| | | | Joined: Mar 2001 Posts: 327 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Mar 2001 Posts: 327 | Sleeper55 just checked on her Tattersfield dual intake yesterday and they said that the powder coating developed some bubbles. What would cause this on aluminum? I thought that was why you "powder coated", to not have bubbles. I think we will just use "stove black" on the Fenton Headers.
Oly in Oregon Rest in Peace1945 GMC COE Victory Truck 1953 Willys CJ3B 1955 Chevy 1st series 3/4-ton 1958 WIFE Last series Never say "Whoa" in a mud hole
| | | | | Joined: Apr 2002 Posts: 1,571 Shop Shark | | Shop Shark Joined: Apr 2002 Posts: 1,571 | Sounds like the intake wasn't cleaned properly before coating. If there is surface contamination, you can get all sorts of problems. For a good explanation of powder coating, try www.hotcoat.com. (I have no association with Eastwood and I'm not trying to sell anything, but the site has a lot of useful info.) They have high-temp powder coats now, I will probably try them on a few things in the near future. | | | | | Joined: Jan 2001 Posts: 45 Member | | Member Joined: Jan 2001 Posts: 45 | I think cleaning is the secret. I sandblasted a set of wheels , took them in for powder coating.
came home with all kind of bubbles where the center meets the wheel rim. sand must of not cleaned it good enough in the cracks
I also had two sets of running boards powder coated. Held up for 1 day. Then scratches and rub marks terrible. No more powder coating for me.
Mike | | | | | Joined: May 2000 Posts: 234 Shop Shark | | Shop Shark Joined: May 2000 Posts: 234 | Normal powder coating is good only up to 300 degress, so if it's near the exhaust no good. But the symptom of that is dulling of the surface, not bubbles - does sound like surface contaminants outgassing.
Suppose it'd be best to clean and bake the piece before coating?
-Boyo
'48 Willys CJ-2A / '55.1 Chevy 3600 / '66 Austin-Healey 3000 / '04 Volvo wagon (parenthood!?)
| | | | | Joined: Feb 2001 Posts: 1,897 Member | | Member Joined: Feb 2001 Posts: 1,897 | Oly,,, You are not suppose to use talcum powder.
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