Got parts back from powdercoating and there was some overspray on gasket surfaces and a couple gasket areas that they didn't mask off at all.

I'm thinking sand this down best possible and use some RTV sealant on both sides of the gaskets?


I didn't get pics of it, but I have heavier overspray on the throttlebody side of the UIM. IIRC the plastic modling between the UIM and TB doesn't use any kid of sealant and the tiny holes for vacuum lines will make using RTV tricky.

They didn't cover the turbo oil outlet port or oil cooler port (inlet??) at all:

Can I simply gasket the surface?


Oil cooler I'll have to clean up some. Can I use some RTV and tighten down the hose adapter?


They also missed the BAC area on the UIM. I'm thinking I'll be ok using some RTV

 

wow, who did the powder coating?
its easy to get rid of it, just sand it down with some 200grit sandpaper. just dont gouge the metal, but clean it up like you were cleaning up after a gasket.
and as for the threads, youre going to need a thread chaser/reamer. just run it through, it will get rid of the coating.
found this as well
http://www.choppersurplus.com/global...ercoating.html

Lloyd

 

Industrial place did the work. The stuff I was bringing them was more needy than they're used to. Usually they do pretty straight forwards stuff...car frames, etc.

I've been using 400grit paper and it's been slow going on the hard to reach areas. 400 grit worked great for a little bit of overspray on intake gasket areas. But anywhere with studs is a PITA. I got some um....150grit (IIRC) but it's too course.

I like the idea of spray stuff. BUT while rattle canning parts I tried some aircraft paint remover and it was a huge PITA. Maybe in smaller areas it will be easier to use this similar stuff. I'll pick some up later today.

Whats your thinking on the turbo oil passage. It's super clean can I slap a gasket on there and use it as is? Or will the oil overtime eat away at the powder coating and create a leak?

 

I've never had a problem putting a gasket over a powdercoated surface, so long as the surface is smooth and was properly prepped before being coated. The overspray can come off with either some sandpaper, a gasket scraper (razor blade), or a dremel with a sanding wheel on it.