Max fuel pressure to put on a p7100
alrighty.... just wanting a genral consenus of how much is "max" pressure you should be running.... currently i have mine set @ 35-40ish
here some guys crank it to 50 @ what point are the seals "thought" to be pushed and fuel runnin into the oil ??? |
Have mine around 40-45psi on my new air dog.
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Dam'n I only got mine at 30, will boosting it up help?
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I set mine there because my old Walboro pump drained down to 0 last time I went drag racing. Truck is strong with this Air Dog, I took it for a ride and got on it pretty good, fuel pressure guage moved maybe a lb or two stayed around 40psi.
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40-45 psi is plenty of pressure there is no gain above that. As for max pressure the seals will live a long time well over 50psi I would be more worried about cavitaion and eroding on the inside of the pump with anything over that. Dual feed with 5/8 line at 40psi and you will have plenty of psi and volume.
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I have seen as high as 50 at wot, with a belt drive. Installed the pump about 3 months ago, no problems yet.
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if i remember correctly i think Jim Fulmer did a test and found there is no gain over like 45 psi of fuel pressure
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i'm running 1/2" dual feed, pump is moving 1gpm give or take (going by aeromotive flowchart) set @ 40ish (i say ish because the gauge on my regulator bounces around like a fish out of water) noticed a "stronger" sounding idle and noticebly stronger mid-top fueling bumping it from 20 to 40, but nothing really after that in my own "testing"
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