Here is the specs from Dodge FSM for the VP44 trucks...


I've stayed at this rule and never had a VP44 problem or failure...

 

This is what I am running.

45 psi at idle, 43 at cruise, 37 at WOT.

I have a Draw Straw, -8 lines on the suction side and -6 on the pressure side running through the factory filter housing. Yes, I still have heated fuel if needed.

Dave

 

WOW Dave..thats way too much pressure

I am suprised it runs at all

yer VP internal spillack is in full tilt

what the heck ya runnin fer a pump???

 

12 Valve lift pump. I am working on a custom bypass, post filter. That should limit presure to 25 or so psi.

I have over 60K on the current setup.

And don't forget, too much is almost enough!!


Dave

 

Did you get a MITUSA?

 

You must not have been running these pressures for very long now. Even 25 is still to high. Your gonna end up blowin the internal overflow or the diaphram on the pump if nothin else happens first. 21psi is the max that even Bosch says the pumps will tolerate on a regular basis, the rebuilder I taked to reccomends 18psi max even for competion trucks that they sponser.

 

We tried for the MITUSA, that's what I wanted but didn't have any luck gettin a hold of the vendor. He is a busy man.

 

If you want one I can get it for ya if you want to pay the price. I've have quick and easy access to Opie through Nathan Wright.

 

I am not sure if it will last. It's still doing fine with over 60K on the clock, approaching 70K on the next oil change.

I'll keep running it until it fails. This VP has already lasted longer than the factory unit running "spec'd" pressures.

Dave

 

MikeL was who we were trying to go through. As I understood it he is the only vendor for them. At this point I would say that this belt drive pump system is gonna be the only way to go once it catches on. This thing rocks. Hopefully when the next guy is ready to give it a shot you can help them out. I'm already up and runnin on it myself.