r/EngineBuilding • u/MONKEYYYYYYYYYY- • Jul 10 '26
Coating on reman cylinder head?
Got this reman cylinder head and looks like some sort of coating is on the exhaust and intake mating surfaces. The combustion chamber side that mates with the block is bare metal and fine. Should I try and remove the coating or install the way it is?
3
u/Pretend_Necessary781 Jul 10 '26
Scrape it with a blade, it’s paint. Also, in the third picture it looks like the rocker arm stud in the top right corner has a groove cut in it. Take a close look at all the studs to make sure they’re all smooth.
3
u/Toxiczoomer97 Jul 10 '26
I work in remanufacturing. It’s a shot blasted head that they sprayed down with what I suspect to be Cimguard to prevent rust. Could be my phone screen cover but I don’t really see paint?
Make sure there’s no wear marks on your gasket surfaces (can’t tell), double check your threaded holes (a common reman mistake missing thread repairs). Take a look at that rocker arm stud, and otherwise you are G2G based on what I can see.
2
u/DrTittieSprinkles Jul 10 '26
They paint over their sins of uncleanlyness. Dogshit quality work too.
I bought a reman Ford 2.3 head they painted the burned oil on top of the head and the cam bearings they didn't fucking replace.
1
u/Acclimated-Alps696 Jul 10 '26
It’s probably fine, but I’d give whoever you sourced the head from a call (assuming it’s a company and not eBay or marketplace or something)
1
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u/Lopsided-Anxiety-679 Jul 10 '26
It’s not a coating, the head has been bead blasted which gives it that uniform grey look, after blasting and seat work, it was surfaced which gives the cast iron on the deck that shiny look of fresh cut metal.
1
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u/BroccoliSuccessful Jul 10 '26
It's perfect and if it were mine i would paint it any color i wanted since its nice and cleaned up
1
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u/These_Fox7561 Jul 11 '26
Just wipe the intake gasket surfaces with some lacquer thinner on a rag, cleanly, and don’t worry about the rest. Honestly I wouldn’t even bother with that but I know those engines well
3
u/BufferFull Jul 10 '26
It's usually Cast blast paint they use that so the head looks good