Jet Hot Manifolds

[bigchevydaddy]

It will be interesting to see how the paint over Jet Hot works; since the Jet Hot has sealed the pores, there's nothing for the paint to 'bite' into, and after a few hot/cold cycles the paint may peel off.
Or the Jet Hot may be the best cast iron primer ever.
Please let us know how it turns out!

BCD

[Unreal]

I'm going to take the route that Guy and Sam suggested. It will take awhile to report back, but I'll let everyone know.

[mrrec]

I've had BB manifolds ceramic coated, then I paint them with Chev orange. Looks very correct after the orange burns off the lower part of the manifold leaving the grey exposed.

Every orig BB I've seen and fac docs show orange painted mainifolds (bare mainifold factory installed before the engine was painted - then painted with the engine). Bare cast iron manifolds were not bolted to a painted engine as with some SB.

Dave

[Unreal]

Dave, are you saying the manifold was completely painted orange, or just overspray near the heads?

I don't know if my manifolds came off a Camaro, Nova, or Chevelle, but they were very early takeoffs, and still had overspray around the ears. The paint was not really burned, as I recall, so they may have been removed the day the guy bought the car. They were dated march 69, (I think) if that makes a difference.

[mrrec]

I'm sure the paint thickness varied, but if you think about it, the bare manifolds were bolted on the bare iron block. To paint the lower part of the block, the manifolds had to be painted. Factory photos show the burned off paint on the lower part of the manifolds. The reason survivors show remains of paint on the ears only is obviously because they remained cool enough to burn off.
I looked at one of mine the other day and there is no peeling or flaking where the orange has burned off - just a darker shade of cast iron grey. I think they're pretty accurate.....
Dave