View Single Post
304065 304065 is offline
304065's Avatar
Join Date: Dec 2001
Posts: 9,534
We have the identical setup. One note: the MFI system working pressure is 1 bar (14.7 psi) and the relief valve in the original bosch pump opened at 2 bar. I run 2 bar system pressure, no starvation, no issues.

You are not even putting stress on the pump by running only 16 psi, it's probably good for five or six times that. And you killed two aeromotive and one holley pumps, which seems a little strange.

What kind of fuel are you using? 110 octane moose juice, or pump gas with a bunch of alcohol or oxygenation additives? It almost sounds like the seal is being eaten away.

Before you spend any more money on expensive pumps, consider using a walbro pump inside your black box. See this thread over on the racing board for my comments.

Batt in smugglers box... Where to mount fuel pump?
'66 911 #304065 Irischgruen
Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13)
Ex-'88 Carrera (Sold 3/29/02)
Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04)
Ex-'89 944 Turbo S (Sold 8/21/20)
Old 01-26-2004, 02:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)