So I was asked what could be done to put a fuel pump on the Durant and do away with the vacuum fuel system. Has anyone here done it? Is it something that can be done easy enough? I assume you could install a low pressure pump with relative ease and no issues by bypassing the vacuum tank or even use it as a vessel but blank off the unnecessary lines.
Ok. So as it happens I’ve been searching briefly on and off for a few days and couldn’t really find anything. After I threw this post up I tried searching with a few different phrases and come across this. Looks like it could be done with little issue. I agree that a return line would help. I’m still open to your suggestions especially if you have done it before. I think keeping the vacuum system is just fine but they wanted to explore this. Here is the link to what I found.
If the vacuum system is working why change it? Millions of vehicles had them for decades. It is more simple and trouble free than most fuel pumps. it will not run any better with a pump.
You may find the needle in the original carby is OK for a gravity feed height of 2 feet but leaks and floods with the extra pressure of even a low pressure fuel pump. If you put a Ferguson carby on you should not have this problem.
I had an old Morris truck that had the vacuum tank mechanism damaged by an enthusiastic farmer who could not leave well enough alone. I fitted an in-line cheap electric pump, still running fuel through the vacuum tank (which made the carby leak). Soon worked out all I had to do was switch the pump on for a few seconds every 5 or 6 kilometres to top up the tank which then ran on normal gravity feed.
Years ago I got sick of the vacuum tank system on my 26 Chev playing up at the most in-opertune times.It was being used as the second family car at the time, with me driving it to work on a daily basis.
I got a low pressure solid state electric pump and gutted the vacuum tank. I then plumbed up the inlet and outlet fittings to the pump, wrapped the electric pump in foam, ran the power wire up through the overflow pipe of the tank and you could neither see nor hear the pump work. No more problems.
Cheers guys. I’d rather leave it how it is, especially since we had it running for a bit without issue. That tells me it’s something we can sort out. We are going to look at it tomorrow to see if we can find what’s going on. Will touch base once we know what direction we are heading. Cheers.