Spitfire Spitfire Fuel pump issues

[afoster]

Hello I am new to owning a British car and I am in the process of rebuilding the engine. The fuel pump however seems to have quit on me. I had bought a 1-5 psi electric fuel pump to put on it. My question is mounting locations for it do I keep it under the hood (bonnet) or put it in the trunk. If I do put it under the hood will it have proper clearance on the firewall from the inner fenders when hood closes. I was possibly thinking of putting it on the firewall right under the clutch master cylinder. Any help would be appreciated.
Thanks

 

[Basil]

Welcome to the BCF! Since you are asking. specific technical question related to your Spitfire (I assume), I'm moving this thread to our Triumph forum where you are likrly to get more responses. If you are reading this now, you are in the Triumph forum.

Do come back to the New Member forum however and post a brief introduction!

 

[afoster]

Ok thank you

 

[Hamish Racing]

The pump might have a design preference for pushing (trunk) or pulling ( engine bay)
If it doesn’t matter locate in most convenient and cool ish position
And welcome. Lots of good advice can be found here.

 

[DrEntropy]

If there's a place close to the tank and as low as possible without being exposed to road hazard damage, that's where it would go if it were up to me. Rear so it "pushes" the fuel, low so it has less chance to lose prime if sitting unused for periods of time.

 

[Sarastro]

I agree with Dr. E re location.

However, the 1-5 PSI spec is a little wide. 1 PSI might not raise the fuel to the carbs and 5 PSI will almost certainly flood the carbs. You want the pressure at the carbs to be 3-3.5 PSI max. You should check the pressure to see what the pump is putting out, and go from there.

I use a pump that puts out about 6-7 PSI and a Holley regulator to lower it to 2 PSI.