Coating exhaust manifolds

[JohnSunliner]

I have a rusty set of stock exhaust manifolds for my 302. I'd like to make them look better but wonder if any of the home shop type coatings actually work? I know that ceramic coating is the way to go but I 'm thinking it would be too much money to put into these old manifolds. Can they even coat rusty manifolds?

 

[frank long island]

try the eastwood co. they have many coatings also bill hirsh makes paint products

 

[Ole Don]

I have used several exhaust manifold coatings, never found one that worked as advertised. The HTP out of Oklahoma City was best in my opinion. Expensive? Yes, but the parts never got rusty.

 

[Ford blue blood]

Try looking at the powder coating suppliers, Columbia is now offering a water based ceramic coating you can do at home. Be advised the 500 degree bake in will stink up the house! They need to be blasted first....

And I have had good luck with Eastwood's "stainless" manifold paint. Sand blast, brush on, bake at 500 and they have been on the car since 1980 with only very small rust spots showing around the bolts.

 

[The Master Cylinder]

I have always used Calyx Exhaust Manifold Dressing manifold dressing with excellent results. Much better than paint and can be touched up if needed on the car.

I have also used Hot Stuff Exhaust Manifold Dressing from Speedway with good results.

Forget Powder Coating, I think it is over rated. Once it gets chipped it corrodes under the coating and flakes off. Just my 1¢.

 

[JohnSunliner]

Thanks for the good advice! I will give one of these a try and let you know the out come. It is encouraging to know some of these do work!
John

 

[all american boy]

john

a little tip.

the first coating they came up with in the 80's

had a little problem.

they did not give off heat.

so you wouldn't feel any heat until

your hand or arm touched them. no fun!

just get them bead blasted at the

local machine shop and let them get rusty again.

have a nice day!

 

[indyhac]

John,
I have had very good luck with the Eastwood coatings but you need to get the rust sandblasted or beadblasted before you paint them. also, dont let them sit more than a day or two before you paint them or they will begin to rust again. If you are not going to put them back on the car and run the engine to get them hot per the instructions, put them in an outdoor gas grill and cook them about 15 minutes; better than using your indoor kitchen oven! Scott

 

[1oldtimer]

I've used the por 15 stuff too. Big key is to blast them first and run them to cure.

 

[jkeesey]

all american boy, wouldnt it be better for them to not give off heat? lower under hood temperatures?

 

[Y-Blockhead]

they did not give off heat.

so you wouldn't feel any heat until

your hand or arm touched them.

Hmmm... doesn't give off heat, yet it burns.

 

[butchbov]

If they're cast just rub some stove black on them & when it starts wearing off recoat them,