Wyreth
Certifiable Noob
At anything more than, IIRC, 9psi. It advances the timing, and starts hurting the IP. 1-2psi at WOT is still ok too. It's not low pressure, it's low volume need to worry about. (also, I dunno if ish just me, but that fuelpump looks like it has been leaking in that picture) If you're in the market for a new pump, Genlightning here has a hookup for the Faucet Duralift pump. ALOT of members run it, and are very very happy with it. http://www.oilburners.net/forums/sh...rrier-Pump-Group-Buy&highlight=pump+group+buy
As far as timing goes, the timing marks on the IP and housing only mean anything for the first IP ever installed on the motor, and only when it was brand new. The IP slowly retards as it ages, and the timing is a calibration, so after a rebuild it will not be the same anyway. So retarding the pump back to that mark, is certainly not going to help. You'd hear it if it was too far advanced. Also, it will spool a turbo much better when too far retarded, but not really go anywhere. So I would say try bumping it a MM or two advanced (CCW, or toward the passenger side) and take it for a test drive. Your best bet tho, is put it on a meter, and actually time it.
As far as fuel goes, if you don't have a pyrometer, you can melt it down quick messing with the fuel screw. If you do have a pyro, then by all means go for it. 600ish for normal driving unloaded, and 1100 max when dragging something uphill is your target temp range.
As far as timing goes, the timing marks on the IP and housing only mean anything for the first IP ever installed on the motor, and only when it was brand new. The IP slowly retards as it ages, and the timing is a calibration, so after a rebuild it will not be the same anyway. So retarding the pump back to that mark, is certainly not going to help. You'd hear it if it was too far advanced. Also, it will spool a turbo much better when too far retarded, but not really go anywhere. So I would say try bumping it a MM or two advanced (CCW, or toward the passenger side) and take it for a test drive. Your best bet tho, is put it on a meter, and actually time it.
As far as fuel goes, if you don't have a pyrometer, you can melt it down quick messing with the fuel screw. If you do have a pyro, then by all means go for it. 600ish for normal driving unloaded, and 1100 max when dragging something uphill is your target temp range.