exhaust manifolds

[michael.warshaw]

where to buy oem, used? mine rusty, how come they rust so easily?

[Dennis Hemingway]

I just cleaned mine then painted them Silver with High Heat Engine Spray Paint. Sorry I don't have a better photo.

Dennis:cool:

http://rides.webshots.com/photo/1121926905039197543yERBMx

[Don Coatney]

The exhaust manifolds rust because they are made of cast iron and subjected to severe heat cycles and condensation. Good luck on finding a new one.

Did you get my PM on the cost of the new rear fender chrome?

[michael.warshaw]

yes i did, thanks i need a pic of that molding.

[Don Coatney]

It will look just like this when installed.

[55 Fargo]

Just spray-em with BBQ paint, especially if you ar just selling the car, if your keeping it, use a quality high-heat paint......

[greg g]

Yep cause the high quality hi temp paint will last at least 6 weeks longer than the loquality low temp paint. I used high temp cast iron color paint, lasted nearly 1 year and a half.

[HalfdollarMayflower]

what about sand blasting and ceramic coating?

[Plymouthy Adams]

good luck on keeping any cast iron manifold looking as it is new..best thing to do is paint it and never start the engine..while this will in itself not entirely preserve the paint..it will allow a much longer time between cosmetic maintenance..suggest Plymouth Owner Club or AACA forum participation for these questions as this is their forte

[LAKOTA169]

Just spray-em with BBQ paint, especially if you ar just selling the car, if your keeping it, use a quality high-heat paint......

I did my intake and exhaust with the high-temp BBQ paint. Looked great. Then I started driving the car and the exhaust manifolds lost all their paint. Intake still looks pretty good.

[james curl]

I de-rusted mine by electrolysis, Then used the high temp paint and baked them in the oven at high temp per instructions on paint can. I painted mine black and a set for a friend in red and most of the paint is still on them two years later, notice I said most of the paint is still on them not all.

[DutchEdwin]

I sandblasted the exhaust manifold. Then painted them with black velvet from POR15. It is still black after 1 year.....but i Haven't drove the car since

Remember, cast iron is very porous. Because of this during the years a lot of grease, dirt, oil etc will get into it. When you paint the exhaust, it will depend on how good you are able to clean it to get the paint to stick to the surface. Combine that with the high temp of the exhaust, putting the gas in the porous structure under pressure because it is sealed of by the paint....and it is a matter of good luck that the paint will stay on.

My 2 cents (more worth in euros than dollars )

Edwin.

[michael.warshaw]

Just spray-em with BBQ paint, especially if you ar just selling the car, if your keeping it, use a quality high-heat paint......

im keeping my car i love it!

[michael.warshaw]

painting is the wrong way to do them powder coating is the only way to go .

[james curl]

How high a temperature will the powder coat take before it melts? They make a special exhaust manifold coating for hot rod headers so that they will not rust. I think it is called AHC coating or high temp ceramic coating.

[greg g]

Well powder coat liquifies and flows at about 400. My guess is the exhaust manifold gets just a bit hotter than that. Might last couple weeks longer than rattle can hightemp. Wanna start an over under after Mike has it done?????

[michael.warshaw]

for the record, basic powder bakes at 400 i agree to that, but there is special high heat power which is good for 1800 plus.

[greg g]

That would be the ceramic based stuff which you did not mention. For the record.

[Reg Evans]

I used this stuff about 18 months ago on my Langdon cast iron headers.

Here's how it looked after a couple of hours of use

Here's how they look today after about 18 months. Rust has started so I would say that "Jet Coating" is the only way to go.

I sent another set out to these guys but haven't installed them yet so I can't really report on the durability of this process.

[Plymouthy Adams]

I am sure this is not a cheap fix but probably one of the best methods and should last the longest and shine the best...follow this link.

http://www.ipe-porcelain.com/page2.html#engine

[blueskies]

I used HPC to ceramic coat my tube headers. Not sure how it would hold up on cast iron, but on my steel headers, it looks the same as the day I installed them. That was about 15,000 miles and about 5 years ago.

Pete

[Arthur1947]

I used stove brite on my block, exhaust and radiator. It has a real nice finish and holds up to 1200 degrees. In my opinion it is much better than the automotive stuff. The stove I have in my house has the stove brite on it and it still looks new after six years.

Best.

ARTHUR

[HalfdollarMayflower]

^^That looks awesome! How long have you had it painted up that way?