Question

[J I Garner CLC # 23406]

I drove my 1962 Eldorado on a 300 mile trip a few days ago and last night I noticed that the paint had burned off the center exhaust port on both banks. Also the crossover port in the intake manifold has burned the paint off. Is this normal or do I have the heat riser installed upside down? How is it supposed to be installed? I drove a 53 CDV on a 4000 mile trip many years ago and the heat riser stuck causing the center four cylinders to overheat and break some rings. I would not like to go through that again.
Jim

[Philippe M. Ruel]

I had the intake manifold on my car sandblasted and painted last year upon leaky gasket changing.


The so-called "high-temperature paint" on center part of the manifold lasted a good TWENTY SECONDS after first engine start, then it started bubbling before my eyes. It totally peeled from the manifold after a few hundred miles.

By the way, the heat riser valve was frozen OPEN.

[R Schroeder]

Normal hot spots.

[Dan LeBlanc]

According to the authenticity manual, the paint in this area is supposed to be scorched if I recall correctly.  Mine scorched on my 62 also with no heat riser valve.

[J I Garner CLC # 23406]

Thanks. I thought it was ok. My heat riser is new.
Jim