Re: Fuel system

Posted by HH56 On 2023/1/25 11:23:17
Quote:
So I'm guessing theoretically if I got a mechanical pump it should just bolt right on

Maybe not. It is kind of hard to see the entire area but it looks like there might be an AC compressor taking up some space the fuel pump would occupy. If that is the case and you want to keep any AC setup probably the only option would be an electric pump. If there is an existing electric pump and it is not working then replacement pumps are relatively inexpensive. Many of us have installed an electric solenoid type pump near the tank that can be controlled by a switch under the dash. In the case of having an existing mechanical pump the aux electric can push fuel thru the mechanical pump and a filter to aid in priming the carb after a long sit where fuel might have evaporated. This prevents a lot of cranking time in bringing fuel up to the carb.

If the mechanical pump is gone then using a low output pressure electric pump plumbed directly to the filter and carb would work just as well. Airtex makes a 6v low output pressure solenoid style pump several have used. Model E8902 has a 2.5-4.5 psi output and is for 5/16 lines. If a mechanical pump was installed in the future, as long as the electric is a solenoid type pump, the mechanical can still pull fuel thru when electric is off and it could revert to an aux backup mainly for the priming function or even to assist in the rare cases where vapor lock became an issue.

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