AC fuel pump diaphragms

[andrew honychurch]

Interesting information thx David. I did much the same on my Stuart tank and replaced the original diaphragms with a simple neoprene gasket and then fitted an electric fuel pump instead. I am minded to go with the latter as another problem with modern fuels is the ammount of additives which seem to turn into gases and cause vapour locks. I have found on other vehicle having a modern higher pressure pump will help compress the gasses and allow fuel through when hot. I think a lot of modern systems get by this problem with having returns to the fuel tank from the carburettor. I did read your old post and you stated that there was a difference between the Carburettor pressure requirement and the fuel pump output. I can certainly see from the manual what the AC pump puts out from the manual but i have not found out any information on what the Holley carburettor is designed to accept. I am sure in the long run, the T16 will run better with a modern fuel pumping system in place.

EDIT...the point being that if one has too much pressure then presumably the carb will flood