Fuel pres. regulator...yes or no??

[jkern]

ok guys, it is time for a new lift pump, i have read the previous posts about fuel pumps, however there is one question that doesn't ever seem to get answered: to use a regulator in line with a new pump or not. i am currently looking at the Mallory series of pumps (4140, 4150). those of you with experience with these pumps, what seems to work the best?



thanks



jeremy

 

[HVAC]

Bag The Reg

I've run the 140 Mallory for going on a year without the regulater. It is for use with a gas engine where you only want 6 psi fuel pressure. The Mallory is internally bypassed, done. I even turned mine up a touch.

 

[EMDDIESEL]

No need for a regualtor with one of those pumps,they dont push enough to be a problem

 

[Bigsaint]

My first Mallory 4150 died, don't think it had anything to due with regulator. Second 4150 is going strong, again, without a regulator. I have mine set at 12-13 psi's idle, post filter, drops to about 8 psi's at WOT, sometimes 6-7 psi's on hard WOT runs, but seems to recover back to 8 psi's very quickly. I don't think it would hurt anything by running a regulator, though I'm not yet convinced it's mandatory equipment either. Seems that it would be good for the lift pump's life expectancy. My Mallory is very strong on WOT runs, I just did a hard run(unloaded) up a 17% grade yesterday ( 5th gear, about 70 MPH) initial psi's were around 7 psi's, but midway into the grade they were back up to 9-10 psi's. Like I said, it seems to recover from the initial surge and then give you what you need when pushed.



Scott W.