Re: Anybody got the end all cure for vapor locking?

Posted by DavidM On 2022/1/10 20:50:34

In discussions with a fuel company (BP) I was told there is no relationship between octane rating and fuel volatility. What you may find is that the higher octane fuel does not have ethanol

I had two 1929 Packards, on one I re-ran the fuel line down the opposite side for the reasons described, it made no difference. There is very little heating of the fuel in the line from the fuel tank to the vacuum tank. The problem starts with the fuel stored in the vacuum tank located in a very hot engine bay and above the exhaust manifold.