Edzred72

Gonna paint trans and oil pan with hi-temp paint after replacing weeping gaskets. Is a primer necessary. If so, should it be hi-temp? :confused: I've tried the local auto parts stores and did not see one primer that specified hi-temp. :cry :cheers: :cheers: thanks as always!!

Tom454

There is a Hi-temp engine enamel primer... I just started using it. No conclusion yet.

Pay strict attention to the curing instructions on the can..... if you do not follow them, the paint will fall off.

Also... any oil or rust at all will cause a very short lifespan for the paint. If there is any rust, I sandblast the stuff before I paint it.

Edit: Plasticote #228 Gray Primer (enamel, 500 degree)



[Modified by Tom454, 5:25 AM 1/23/2002]

Edzred72

Thank you Tom. :D None of the local shops carry this stuff, cause I asked. I'll check a few local auto paint places during the day while their open. (wish they all had evening hours) :yesnod: :yesnod:

Paul L

GM engine paint from the dealer. Works very well.

JohnS_77

Can I add a question here?
Has anybody ever had any luck painting headers or exhaust manifolds with a high temp paint?

Thanks!
-John

Tom454

I have had luck by doing the following:

1) Sandblast the manifolds until there is absolutely no sign of rust what-so-ever
2) Wire wheel them to take off the "fluff" produced by sandblasting
3) Wipe them down with lacquer thinner until a clean paper towel comes back clean after wiping.
4) Apply the paint... hang the manifolds with something tough to take the weight. (I use pipe hangers from an autoparts store)
5) Bake in the oven to cure.... per directions.... this is the key (my wife hates this part).
6) Let hang for about 3 days before handling


If you don't do it this way, the stuff flakes off.

Also... the current 500 degree paint needs to cure as well.... and it will lift if you add additional coats too soon, or if you apply a heavy second coat even after it air cures.

Tom




[Modified by Tom454, 11:32 AM 1/23/2002]

77 Stinger

You need to visit por15.com This stuff is the best for what you are doing,and you do not need any primer. :smash:

Gator81

I used PlastiKote Hot Paint on my exhaust manifolds. They look great, something like 7 years and over 30K miles later. I used silver, and I think it's available in black and white, also.

I had the manifolds bead-blasted at my local machine shop. That cost something like $10, maybe $15, I can't recall for sure. It wasn't alot. Then I solvent-cleaned them many, many times. After spraying the paint, using several very light coats (the first coat is really just a light fog), and an hour or so of drying time, they went into my kitchen oven at 500 degrees for awhile. I can't remember exactly what the can says, maybe an hour or two?

With exhaust manifolds, you could install them and then drive to get them hot enough to cure the paint, if you don't want to stink up your kitchen (it will!). It's very similar to powder coating. If you don't bake this paint on, it will simply rub off in a powder form after it dries.

Good luck! :seeya

Edzred72

Thanks for the reply Tom, but I do have the :chevy blue. Just can't find any kind of hi-temp primer that the paint calls for :confused: Nobody here carries it! :mad