Engine Enamel Paint for block and Blower

[Tartilla]

One of the not so focused topics is engine paint and tech. With all the EPA changes on paints, looking for the best COA for my marine BBCs and blower supercharger.

I can spray HVLP, but rattle cans are pretty good these days, and good for touch ups and color matching in the future.

I want to paint the B&M 420s and intake as well.

Thanks,

Art

[mag2555]

Check out Eastwoods high temp ciramic engine paint.

[Tartilla]

I'll have to check out the Eastwood 2 part rattle cans. Harder to get in Canada, but looks like KMS is a distributor.

[Chris_Hamilton]

My perspective as a metal/body/paint guy for 30+ years. If you want it to last use epoxy primer then a quality automotive refinish single stage urethane. Eastwood is low end stuff. Anything in a spray can is low end. Including those gimmicky 2 part ones. For epoxy, If you use an acid like Ospho for block prep, either neutralize it by re-wetting with the product, keeping it wet for 10-15 minutes then rinsing with water. If you don't or can't do that use self etching primer. Epoxy doesn't adhere to an acid film, like what gets left after using an acid product.
I've never had a failure painting a block using epoxy then a single stage urethane. SPI Epoxy is the best you can use. All I use.

As for brands, PPG Omni and Omni+ are really low end. PPG Concept is good but expensive. Utech if you can find it makes a good single stage. Automotive Art Motocryl is an excellent single stage that is quite affordable. There are others Glasurit 22 is my all time favorite single stage but it's hideously expensive. BASF Wanda has a high quality single stage similar to Motocryl. Good quality and affordable.

I realize that the method I described may be more than you want to invest in time and money but I thought I would post it in case anyone does.

[mt-engines]

I use base/clear and single stage paints all the time.

Limco or Diamond is what I prefer to use. On an engine you really don't need the UV resistance. But I have never had a problem with heat.

I prefer a catalyzed paint just because its tougher and dries fast. Seems to resist brake clean also. You won't get that out of a spray can.

[cgarb]

How about an alkyd enamel? I know some old machine tools used that for finish. Seems to hold up to oil and dirt reasonable for the abuse they get put through.

[mt-engines]

How about an alkyd enamel? I know some old machine tools used that for finish. Seems to hold up to oil and dirt reasonable for the abuse they get put through.

Sure, they just take forever to polymerize without a hardener.

You can thin out tractor enamel enough and use a catalyst if you want to speed up the process.. I just don't like wet paint for days

Here are some of the cheap paints I use on engines, valve covers, oil pans etc

[econo racer]

Is it ok to install brass freeze plugs after painted or does it need to be cleaned off 1st?

[cgarb]

I would clean the paint out of the bore the plug goes into.