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-   -   Help with Powdercoating (https://www.offshoreonly.com/forums/general-q/199429-help-powdercoating.html)

ThruHull 11-26-2008 12:28 PM

Help with Powdercoating
 
I purchased a New set of Keith Eickert headers about 6 months ago and had them powdercoated as part of the purchase. Not long after I got them I noticed a few hairline spider cracks in the powder coat but nothing to bad, but it seems to be getting alot worse over the last couple months. What could be causing this?

Whipple Charged 11-26-2008 01:14 PM

They may have not been prepped properly, and there was oil, gas, etc. on them from the castings, or the cold/hot cylce are shrinking/expanding too much for the PC.

Dustin

ThruHull 11-26-2008 01:28 PM

Thanks Dustin, I purchased them from CP, not sure who they use for their powdercoating. Not sure what to do from here

Corsa 11-26-2008 01:42 PM

Give me a call...we could strip them and re-powder coat them for you. They will look brand new again.

Thanks,
Jim Browning Jr.
CORSA Performance
800.486.0999 ext 112

ThruHull 11-26-2008 01:50 PM


Originally Posted by Corsa (Post 2747925)
Give me a call...we could strip them and re-powder coat them for you. They will look brand new again.

Thanks,
Jim Browning Jr.
CORSA Performance
800.486.0999 ext 112

I may call CP if this is definately a prep problem and see if they will stand behind them at all. If not, I will definately give you a call.

Tosh

Corsa 11-26-2008 02:01 PM

OK...Glad to help if I can.

Jim

Sledge Hammer 11-26-2008 05:05 PM

How do you strip powder coat?
 
I have some aluminum valve covers that are powder coated and I would like to strip it and just polish them. How do you get the powder coat off? I have been told to sandblast them, but then polishing them would be a lot more work. Any suggestions

CPPerformance 11-26-2008 06:39 PM


Originally Posted by ThruHull (Post 2747870)
I purchased a New set of Keith Eickert headers about 6 months ago and had them powdercoated as part of the purchase. Not long after I got them I noticed a few hairline spider cracks in the powder coat but nothing to bad, but it seems to be getting alot worse over the last couple months. What could be causing this?

While I havent seen this yet I guess anything is possible. If you want to get the part in question back to us. Give me a call my name is Brian and I can issue a RGA# so that we can track the shipment and its processing. Once we examine and analyze the cause of the issue at hand we will work to correct it with you.

PJDiesel 11-26-2008 06:59 PM


Originally Posted by Sledge Hammer (Post 2748107)
I have some aluminum valve covers that are powder coated and I would like to strip it and just polish them. How do you get the powder coat off? I have been told to sandblast them, but then polishing them would be a lot more work. Any suggestions

"sand"blasting powder is a pain in the sack. It WEARS away rather than just coming off nicely like paint and/or rust.

A lot of people have the powder burnt off prior to having it abrasive blasted, works much better in most cases.

Griff 11-26-2008 10:31 PM


Originally Posted by Sledge Hammer (Post 2748107)
I have some aluminum valve covers that are powder coated and I would like to strip it and just polish them. How do you get the powder coat off? I have been told to sandblast them, but then polishing them would be a lot more work. Any suggestions

Soak them in acetone. It should come off with a razor blade then.

Sledge Hammer 11-27-2008 10:21 AM

Thanks for the feedback guys. I am going to give the acetone a shot first, as I would like to maintain the smooth surface for polishing.

ThruHull 11-27-2008 11:24 AM


Originally Posted by CPPerformance (Post 2748186)
While I havent seen this yet I guess anything is possible. If you want to get the part in question back to us. Give me a call my name is Brian and I can issue a RGA# so that we can track the shipment and its processing. Once we examine and analyze the cause of the issue at hand we will work to correct it with you.

Thanks Brian, I will give you a call next week. I wanted to get some feedback on what the problem might be before I spent a bunch to ship them back to CA from VA. I appreciate the customer service!

Tosh

Corsa 12-01-2008 11:45 AM

Getting the part hot...baking it off is the better choice to removing the powder coating. We have a large oven that we use when we need to strip something. Then we can give the part a quick blast and it is ready to be re-coated.
If you want us to re-coat the valve covers, I can handle that for you...just let me know.
Thanks,
Jim Browning Jr.
CORSA Performance

AIR TIME 12-01-2008 01:42 PM


Originally Posted by Corsa (Post 2750559)
Getting the part hot...baking it off is the better choice to removing the powder coating. We have a large oven that we use when we need to strip something. Then we can give the part a quick blast and it is ready to be re-coated.
If you want us to re-coat the valve covers, I can handle that for you...just let me know.
Thanks,
Jim Browning Jr.
CORSA Performance

jim can he have them recoated in clear so they look polished??? just a thought.

Corsa 12-01-2008 01:49 PM

If they were polished first...I could the clear powder coat them. The color changes just a little when you clear PC stuff, but it is very close.
When powder coating something that is polished first, you have to have someone that really know what they are doing...as it likes to run when you cure it. The slick polished surface makes it tougher for the powder to stick to it when it curing.
I could also do them in the blue like Merc Racing uses? or just about any color that someone might like.

bobl 12-01-2008 04:41 PM

We use a large vat of carb cleaner. Just soak the part over night and the powder coat will rinse off leaving the part looking original. No scraping, sand blasting, etc.


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