Case Paint - POR15 or Spray Max 2K?

I’ve tried PJ1 and VHT paint unsuccessfully on my 1980 390WR since both coatings are compromised by fuel.

Has anyone tried POR15 chassis black or Spray Max 2K satin hot rod black for a case paint? Both paints claim to be chemically resistant. If you used them successfully, is the coating the correct sheen and did you have to use a primer?

Any help on case paint information would be greatly appreciated.

Thanks.

Trimite paint. This is a 2 pack. The satin black comes out just perfect.
Not cheap though.

Grouty,

I went to Trimite’s website and they have a ton of different products.

Could you kindly provide:

1. The Trimite product description and Trimite # that you are referring to?
2. Do you also use a Trimite primer? If so, can you provide that description and part # since they have different primers as well?

Thanks,

Jon

I've used VHT High Temp engine enamel for the past 10 years and have been happy with its fuel resistance. Do you cure it at 250 degrees for an hour?

I bake all my paint like my Pork Ribs Low and Slow!! But I also build ovens for a Living!!

Well its obvious you didn't read the directions on the spray can, cause I double checked and it says nothing about pork ribs!

Yes. Cured it for an hour at 250 F and it was probably a month before I got everything back together and fuel from the carburetor came in contact. The VHT blistered like I put paint stripper on it. I liked the VHT finish, but I’m reluctant to use it again based upon my past experience and I don’t want the 250 F temperature to compromise the new engine seals.

I've had a few cans of paint that never dried or didn't have any pressure or were a different color than labeled. You hate to waste paint but try a small spray out, after you shaker good like brown sugar on the Ribs Know what I mean!!

Okay, I think understand. Sounds like you repainted the engine cases with the motor assembled. In that case I agree with your comment. I use the gas grill to cure my bare cases and sometimes the temp creeps above 300. Wouldn't want that to happen to an assembled engine.

I have been using this but it is getting hard to finde.

I currently have the cases split but I don’t want to pull new seals in order to rebake the the cases after repainting. I’m hoping to find an alternate coating that I don’t have to bake, but is also fuel proof.

Just put the parts in the clean bbq and put a 100watt bulb in for a day or so. That will get ya like 120degF

So I ended up using the Spraymax 2K satin black with a Spraymax epoxy primer undercoat.

Went on very easily and has a beautiful finish, albeit it is not cheap paint. I spoke to the Spraymax Tech support prior to painting to ensure proper adhesion, whereby they said no acid etching or self-etching primer was required. However, I got a few paint chips here and there down to the bare cases. The good news is that the finish is impervious to gas (at least so far).

Thanks for the update. Always good to know what products others are trying.

Here's a couple of pictures. A little dusty looking due to all the pollen we've had recently. I didn't paint the cylinder or head since the finish on them was in good shape.