Quote:
Originally Posted by Riverside racer
I use a Carter vane style pump and malpassi regulator for the SBF.
4x45 DCoe's on a crossram inlet manifold and never a problem
|
Is that the P4600HP pump? Many people have complained about all types of electric fuel pumps in dead head configuration, even the Carter. There is a small check ball inside that pump that bypasses the fuel to the inlet thereby recirculating when the engine is not drawing anything like at idle. Apparently, some cavitation possibly involving overheating the fuel can create an air pocket in that circuit and then the fuel pressure drops and it can be hard to get out of that loop even when under fuel demand. The pump appears to work out for some people and others have issues. Hard to decide what to do