<VV> Vapor Lock

[Frank DuVal]

This is also a shock, but I agree with Smitty. Desparate times call for 
desperate measures, that is why I installed so many electric pumps in 
the 80's. Even on '69 models with the return lines. The return lines 
help prevent vapor lock while the engine is running, but nothing for hot 
soak.

I would much rather replace a stock fuel pump, it only takes, maybe if 
everything goes wrong, a half hour. One of the best fuel pump mountings 
I have ever worked on. So, it is a desparate attempt at a cure to go 
through the trouble of installing an electric pump. I have done several 
with the momentary switch so the mechanical is the main pump, electric 
only for emergencies.

Frank DuVal

Smitty Smith wrote:

>Smitty Says:  I know this will come as a total shock to many on the list, but I am not an electric pump advocate.  Sometimes with reality staring us in the eye we have to make compromises.  Mine would be an electric at the tank with a push button to blow the gasious bubble out of the line.
>  Something for a lot of you to consider when talking on this subject.  Vapor lock does not occur in a Corvair when the engine is running.  Too much nice cool air whistling down over the pump and lines for that.  Vapor lock occurs after heat soak and when the engine is started the air doesn't have time to cool the components before the bubble gets to the pump.  I consider that to be truth, and therefore see no way that the recirculating return line is going to prevent vapor lock as fuel is only flowing through it when the pump is pumping.
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