Cast iron exhaust manifold cleaning

[ajarofclay]

More of a "how to" question; I'm wondering what are some of the better ways to clean up and coat or treat factory stock exhaust manifolds. As Always, thanks in advance, Gentlemen...and/or ladies.

 

[RustyRatRod]

Media blasting.

 

[Scody21]

Bead blast, parts wash and paint with high temp header paint

 

[1MeanA]

I media blasted mine and then coated with POR15 high temp paint. It looks pretty good to me.

 

[ajarofclay]

I've never had good luck with "High temp" paint, myself. Any suggestions on brand, color? What about ceramic or powder coating?

 

[1MeanA]

POR15 as mentioned....manifold gray

High Temp

Purchase POR-15 High Temp extreme heat-resistant paint online now! This coating can withstand extreme temperatures up to 1200°F and will resist UV, cracking/chipping.

por15.com

 

[4spdragtop]

Once blasted, wipe with brake/component cleaner, then brush on with POR15 Manifold grey. That stuff goes far, is durable and can be touched up with brush. It has the consistency of thin toothpaste, but coverage is above excellent. A small can will do 5 sets, 2 coats each of sb manifolds easy.
POR-15 High Temperature Paint - Gray - 8 fl. Oz. - High Heat Resistant Paint - Withstands Temperatures of 1200 Degree F | Weather & Moisture Resistant https://www.amazon.ca/dp/B00J6B1JZY?tag=fabo03-20

 

[abodyjoe]

had miine blasted then used POR15 on them. at about the 6000 mile mark they still look like the day we coated them. High Temp

 

[dadsbee]

Crushed glass media blast, VHT Cast Iron manifold paint... properly cured in an oven and Bob's your uncle. 6+ years on mine and about 4000 miles, still look good.

 

[abodyjoe]

por15 coating. foam brushed it on.. cured it in the oven some even though you don't really need to..