[79 Phoenix]

I need to paint my cast iron exhaust manifolds. I want to use something that will last. I've heard of using brush on stuff years ago but no idea what it was. Want color to be a light gray possibly.

Anyone have a recommendation?

[steve25]

VHT brand or Eastwood.

[Steve C.]

Link to Eastwood....
https://www.eastwood.com/paints/hi-t...st-paints.html


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[tjs72lemans]

I used the Eastwood brush on manifold paint and three years later with 2500 miles they still look new.

[Joe-Touring]

I painted my RARE HO manifolds 5ish years ago with POR15 Hi temp aerosol, is holding up great so far. It is a two part mix, so once you pop the activator, you only have a day or so to spray. You gotta bake it for a bit to cure. I used an old BBQ.

https://www.summitracing.com/parts/poi-44318

[78w72]

Do a search, this has been discussed recently. I also used POR15 on cast iron exhaust manifolds as well as a turbo wastegate, looks great and lasts as long as any paint can. Ceramic coat in a cast iron color will last much lonbger & has insulating properties that paint doesnt have.

[79 Phoenix]

Okay guys. Thanks for the help!

[b-man]

POR-15 manifold paint is the least expensive and I’ve used it with success.

I used the brush on version several times and it came out looking very nice.

[nUcLeArEnVoY]

Originally Posted by b-man

POR-15 manifold paint is the least expensive and I’ve used it with success.

I used the brush on version several times and it came out looking very nice.

This is what I used on my factory driver side log manifold while I had it off to replace the shim gasket. I first coated it with hi-heat Rustoleum primer and let it sit for a few days to cure before coating it with the POR-15 Manifold Gray. It's a good, natural cast iron shade and hasn't even shown a remote sign of flaking off or peeling.

[b-man]

POR-15 manifold paint is the least expensive and I’ve used it with success.

I used the brush on version several times and it came out looking very nice and has lasted many years.

[GtoFM]

I believe there was a thread about using spray graphite dry lubricant. IIRC the PROS were cheap, long lasting and easy touch-up. Don't remember the CONS. Anyone using it?

[grivera]

I painted a set last week with the Eastwood brush on manifold paint - won’t know how they hold up till later, but the paint lays nicely

[grivera]

I painted a set last week with the Eastwood brush on high temp coating - won’t know how they hold up till later, but the paint lays nicely.

https://www.eastwood.com/factory-gra...p-coating.html

[Half-Inch Stud]

I tried a bunch of differing tings since the 80's. (Nearly) All good until the cars sits in a humid garage over Winter. Then every cast metal and bare metal gets corrsion, even the dash knobs.

Prepare the ground for Water-shed outside, and De-humidify so the the garage floor is not moist.

[Cammer-6]

dont laugh
a buddy was restoring a Tbird and blasted the manifolds and coated with fresh motor oil.
He then "seasoned" them. Start car up and first whisp of smoke shut it off and let cool.
The time running until whisps will get longer until its seasoned

[Vid]

Originally Posted by Cammer-6

dont laugh
a buddy was restoring a Tbird and blasted the manifolds and coated with fresh motor oil.
He then "seasoned" them. Start car up and first whisp of smoke shut it off and let cool.
The time running until whisps will get longer until its seasoned

Basically the same procedure chefs use for cast iron pots and pans. It’s brilliant to use the same process on exhaust manifolds. Instead of motor oil, I’ll bet you could use Avocado oil as it has a very high heat tolerance. However you might find yourself craving a salad when you take the car for a spin


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[grandam1979]

Have them jet hot coated I got my manifolds used in 2012 been on the car since still look great. It’s not cheap but it will last

[limejudge69]

Years ago I used Calyx exhaust paint on a set of manifolds. Held up pretty well. Eastwood sells it.

[Formulas]

The one and only time i sweated the look of cast iron manifolds i simply sand blasted, sprayed them off with brake clean then sprayed them with silver spray paint marketed for BBQ's .... if i remember right i did run them shortly to give tem some real heat then let them cool before regular use..... over 20 years ago they dont look fresh but they are not rusted hulks either

[Rob in NH]

I used Por15 manifold grey, Its only been a year but they still look good