| Re: Vaporlock baseline temperatures [message #211731 is a reply to message #211715] |
Thu, 20 June 2013 18:58   |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma:
|
Senior Member |
|
|
| Michael Morton wrote on Thu, 20 June 2013 14:36 |
Guys, I just can't believe that everyone keeps trying to over engineer this vapor lock problem). All that is required is a simple fuel return line. Just tap and install a fitting in the top of the fuel filter housing at the carb, install another one in the fuel filler neck, located in the engine compartment under the drivers seat and connect the two with a 1/4 inch line. I did this 2 years ago and haven't have a hint of vapor lock problem since.
Mike Morton
1975 Eleganza (Sloopy)
|
I agree with Mike in the KISS method. A number of us have fuel injection and the throttle body EFIs all have a fuel return. I personally have not had vaporlock, but I believe some EFI users have had vapor lock problems.
It is this that leads me to believe that _if_ you can get the pump to pump, all will probably be well. It is the _if_ that is the problem. Pumps have higher pressure after they pump but the real problem is the lower pressure before the pump. Lower pressure equals lower boiling temp. (of course the release of pressure in the carb bowl could also be a problem)
I am going to start taking tank temps with my laser thermometer. One day I was stopped fiddling with something and happened to put my hand on the front tank. It was surprisingly cool to the touch. It was not a hot day but not winter either but the tank was cool. I am getting curious. ( my tanks are not painted or anything. They are the color of 40 years under a coach. ) I have front mufflers which can't help. I do have heat shields next to the exhaust.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
