Thanks Luddite, I'm never too busy to respond and just pleased that my project interests some people.
The car had a fuel pressure regulator fitted but that was for very high pressure FI as you say and you can indeed use a regulator to step the pressure down enough but it isn't the best solution really. . Now that I've gone back to a carb set up, I've changed the Bosch injection pump for a new low pressure Facet one. That's all that would be required if I was running on standard SU;s but because I've fitted a Webber 500 carb, ideally it needs constant pressure of no more than 5 psi, so a decent regulator, specifically for a carburettered V8 was required.
Hopefully, the top of the rad will never run dry as I have a separate expansion tank on the bulkhead, one of Simon's creations. The way that I've plumbed it in also means that it auto bleeds the system. Well, that's the theory.....
Ideally the fan switch should always be at the top of the radiator as that then senses the water at it's hottest point. You are correct though, if somehow it does run dry, the fan won't come on.
Last edited by Culminator; 12/02/20 07:06 PM.
