Most Horsepower on Piston Lift Pump?

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Most Horsepower on Piston Lift Pump?

Postby Begle1 » Tue Apr 08, 2008 5:48 pm

Anybody know what the horsepower record is on a VE running just a Cummins piston lift pump? Either first gen or second gen lift pump?

Where do they start limiting things?
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Postby cummins king » Tue Apr 08, 2008 7:37 pm

i dont see why they couldnt handle it right up to the max a 12mm can push out, so 450hp

but you need the electric when going to a 14mm,
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Postby CumminsPride » Tue Apr 08, 2008 8:37 pm

Does anyone actually know the given fuel delivery rate of a piston LP at a given RPM and PSI? This would be the true way to find the limit.

I don't see why a second gen LP with a bypass reg. wouldn't be just as effective as a fass other than inlet/outlet restrictions. The actual design is pretty superior for reliability and increased volume with RPM.
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Postby cummins king » Wed Apr 09, 2008 4:55 am

CumminsPride wrote:Does anyone actually know the given fuel delivery rate of a piston LP at a given RPM and PSI? This would be the true way to find the limit.

I don't see why a second gen LP with a bypass reg. wouldn't be just as effective as a fass other than inlet/outlet restrictions. The actual design is pretty superior for reliability and increased volume with RPM.


i think thats asking alot, the only people that probly have that info is cummins
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Postby Begle1 » Mon Apr 14, 2008 3:47 pm

Somebody's got to know the numbers?

Couldn't you multiply the piston volume by it's strokes-per-minute to get total fuel-flow-per-minute? At least a reasonable approximation?
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Postby bgilbert » Mon Apr 14, 2008 5:19 pm

cummins king wrote:
CumminsPride wrote:Does anyone actually know the given fuel delivery rate of a piston LP at a given RPM and PSI? This would be the true way to find the limit.

I don't see why a second gen LP with a bypass reg. wouldn't be just as effective as a fass other than inlet/outlet restrictions. The actual design is pretty superior for reliability and increased volume with RPM.


i think thats asking alot, the only people that probly have that info is cummins

The info is readily available in the Cummins Troubleshoot and Repair Manual. I'm too lazy to look it up :roll: .

I made 450rwhp with a 14mm pump, low pressure piston LP, stock fuel pickup, lines, filter etc. For my other HP truck, the 91.5, I have a low pressure piston LP, 1/2" pickup and supply to the LP, and have no plans to 'upgrade' to an electric or 2nd gen LP. I'm guessing it will support just about whatever the low HP VE will produce.

What lift pump/system did Stomp use during his high HP runs?
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Postby KTA » Mon Apr 14, 2008 5:38 pm

I believe he had a Fass until it died on him.
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Postby dazedandconfused » Mon Apr 14, 2008 6:19 pm

KTA wrote:I believe he had a Fass until it died on him.


I was thinking the same thing.
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Postby DTanklage » Mon May 19, 2008 9:37 am

Begle1 wrote:
Somebody's got to know the numbers?

Couldn't you multiply the piston volume by it's strokes-per-minute to get total fuel-flow-per-minute? At least a reasonable approximation?



do you know how many variables there are?

lines pick-ups regulators filter temp etc

all these things will effect the number you are asking about
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Postby Begle1 » Sat Jun 14, 2008 10:30 pm

DTanklage wrote:
do you know how many variables there are?

lines pick-ups regulators filter temp etc

all these things will effect the number you are asking about


So what do the numbers in the Cummins manual say? :D
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