[rwfisher]

I think you’ll still see temps. that are high enough to blister the paint. What was recommended to me years ago by a noted Pontiac restorer was to not apply the engine paint to those areas you know are going to burn off. Instead, paint in those areas with Eastwood cast iron look high temp paint. This still looks like the paint has burned off but will be rust resistant and not show the gold tone of the burnt engine paint. Easily touched up with a brush if needed. This also works on the intake crossover if you don’t run that blocked off.

[Formulajones]

Originally Posted by rwfisher

I think you’ll still see temps. that are high enough to blister the paint. What was recommended to me years ago by a noted Pontiac restorer was to not apply the engine paint to those areas you know are going to burn off. Instead, paint in those areas with Eastwood cast iron look high temp paint. This still looks like the paint has burned off but will be rust resistant and not show the gold tone of the burnt engine paint. Easily touched up with a brush if needed. This also works on the intake crossover if you don’t run that blocked off.

I've taken that a step further but with a different product.

For many years I've coated that area with POR15 cast iron paint but I don't leave it that way. After that cures I then cover it with the proper engine color paint when I paint the rest of the engine.

This has lasted me years, I very rarely have to go back and touch up the blue paint. In fact I've put at least 60,000 on my own since this was done and I think maybe I've went back and lightly touched it up twice. I've used this method on builds I've done for others with good results.