Re: Concerning Bubbles & Vapor Lock

Posted by BigKev On 2023/5/18 13:25:41
Make sure the insulator is in place between the carb and the manifold.

Yes, there supposed to be a fuel pump heat shield.

This is what it looks like, and I have this one available if you are interested.

Also, check the routing of the hard fuel line. It should come straight out and then bend towards the pump. So it stays away from the manifold as much as possible and in the airflow path from the fan. Here is an example of the line routing on my '54 motor. I would imagine the '37 routing would be similar.

I ran my '54 in So. Calif in 100F heat without an issue.

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