Single walbro 450 limits

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Feb 22, 2016 | 12:03 PM

#21

gnx7

TECH Junkie

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From: San Francisco, CA

I run (2) Walbro 450lph pumps which supports 1400hp flywheel on e85.

Overbuild your fuel system... or suffer a motor meltdown doing it half assed.

Feb 22, 2016 | 12:57 PM

#22

Racetronix

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From: A Racetronix dealer near you...

Quote:

Originally Posted by stage274

Your right, Racetronics hooked me up, also, I got the twin 340s, as far as the Boost of pump, it does not work on the bigger pumps. 340 and above, because they pull to much amps.

The larger KB BAP can supply up to 40 amps of current!
Our RXP340 pumps draw apx. 17 amps each @ 16V @ 80PSI.

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Feb 22, 2016 | 01:16 PM

#23

Atomic

I need a gauge for that

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From: Huntsville, AL

This is what my math says...for 2 pumps basically double the power number. You would want to use your base fuel pressure + boost pressure (if using a referenced regulator) as the pump pressure on the bottom. Read up then over to the left. A voltage booster would shift both lines upward.

Example, 55psi base pressure and 20psi of boost on gas. Enter bottom at 75psi to the red line, then over to the left for just shy of 800rwhp.

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