Engine/Transmission (1998.5 - 2002) 95 GPH FASS need a regulator ?

[CCahill]

My injection pump took a dump, so I made the jump... hey that all rhymes... (sorry)... to a 95GPH FASS... I,ve read all the threads till I'm blue in the face, and can't seem to find this info... I know the VP likes to have a winow of certain pressure ... but not too much... do you FASS guys have regulators on your truck ?



Thanks in advance...

 

[DirtyDodge]

I have the FASS 150 running strait to my VP44, no regulator. Have had no problems so far.

 

[Mad Bomber]

Had the 2 pump Carter was running 22 at idle for 3 years not a hickup even. Now run FASS 18 at idle.

 

[darkhorse]

There are several different springs available for the pressure relief valve in the FASS pump. Give your dealer a call & ask about them. I just called Rip with that question & he put a spring in the mail for me last week. FYI the ideal operating pressure for the VP 44 is 13 psi. Less than 5 psi will not fill the pressure cylinder properly at WOT & to much pressure can lead to leaking seals in the pump.

 

[LowFly]

There are several different springs available for the pressure relief valve in the FASS pump. Give your dealer a call & ask about them. I just called Rip with that question & he put a spring in the mail for me last week. FYI the ideal operating pressure for the VP 44 is 13 psi. Less than 5 psi will not fill the pressure cylinder properly at WOT & to much pressure can lead to leaking seals in the pump.

The FASS has 2 regulators in it (one to protect the motor and one for pump pressure) and the HPFP has one. After SN#:8012, anything for Dodge with the EM-1001 motor has the new PS-1002 spring that brings pressure to about 13-14 PSI.



The HPFP pumps are about 18 PSI.