Installing engine parts on painted surfaces - The 1947 - Present Chevrolet & GMC Truck Message Board Network

brown7373 · 02-03-2018, 07:49 AM

I am finishing the 350 crate engine for my 72. Can I install the exhaust manifolds to painted surface on the engine or should I remove the paint? Same question for oil filter with contact surface on engine painted.

Perpendicular · 02-03-2018, 08:12 AM

Quote:

Originally Posted by brown7373

I am finishing the 350 crate engine for my 72. Can I install the exhaust manifolds to painted surface on the engine or should I remove the paint? Same question for oil filter with contact surface on engine painted.

I have always cleaned that area. My thoughts were the paint will only give you some uneven surfaces which can cause leaks and when you take off what you put on (I.E. the oil filter) it will take the paint off anyway.

YMMV though

-Paul

**special-K** · 02-03-2018, 08:27 AM

You want metal to metal.

bill3rail · 02-03-2018, 05:33 PM

Quote:

Originally Posted by special-K

You want Gasket metal to metal.

Corrected Maybe?

bbrriiaann1973 · 02-04-2018, 03:02 AM

Should be bare metal

**special-K** · 02-04-2018, 08:06 AM

Quote:

Originally Posted by bill3rail

Corrected Maybe?

Yes, metal to metal on mating surfaces, with gaskets where required.

02-03-2018, 07:49 AM	#1
brown7373 Registered User Join Date: May 2011 Location: Fort Pierce, FL Posts: 430	Installing engine parts on painted surfaces I am finishing the 350 crate engine for my 72. Can I install the exhaust manifolds to painted surface on the engine or should I remove the paint? Same question for oil filter with contact surface on engine painted.

02-03-2018, 08:27 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: Installing engine parts on painted surfaces You want metal to metal. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-04-2018, 03:02 AM	#5
bbrriiaann1973 Registered User Join Date: Jun 2015 Location: Phoenix Az Posts: 211	Re: Installing engine parts on painted surfaces Should be bare metal __________________ Brian Ritter



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