Fueling & Injection - how many HP is dual walbro's good for?



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orange88
03-01-2006, 05:38 PM
hi im wondering how much power a dual walbro 255 setup is good any one know?
its in a turbo car.

ddnspider
03-01-2006, 07:41 PM
1 trillion dollars....ahem....ive seen guys make >700rwhp.how much u looking to make?
INTMD8
03-01-2006, 08:01 PM
We've brought them to just under 1000rwhp on a turbo LS1 with the stock fuel line and filter.

ddnspider
03-01-2006, 08:12 PM
with stock fuel line !??!!
Slowhawk
03-01-2006, 08:18 PM
We've brought them to just under 1000rwhp on a turbo LS1 with the stock fuel line and filter.

Straight with no additive like Meth?
onfire
03-01-2006, 09:03 PM
Be careful on the psi vs hp rating. If you boost reference a turbo car with a base fuel pressure of 58psi....then add 20 lbs of boost...the flow rate tumbles for two Walbros at 78psi.Less than 600lbs/hr for two Walbros over 78psi vs 740lbs/hr for two 044 Bosch pumps at the same pressure. Two Walbros at 50psi are almost good for 800lbs/hr.
DJ's Z
03-01-2006, 09:09 PM
Be careful on the psi vs hp rating. If you boost reference a turbo car with a base fuel pressure of 58psi....then add 20 lbs of boost...the flow rate tumbles for two Walbros at 78psi.Less than 600lbs/hr for two Walbros over 78psi vs 740lbs/hr for two 044 Bosch pumps at the same pressure. Two Walbros at 50psi are almost good for 800lbs/hr.

Does the same theory hold true for SC cars? Say an F1 with 2 intank 340 Walbros? Trying to achieve say...850RWHP.
onfire
03-01-2006, 09:18 PM
Does the same theory hold true for SC cars? Say an F1 with 2 intank 340 Walbros? Trying to achieve say...850RWHP.


Yes it does. :drive:
INTMD8
03-01-2006, 09:28 PM
Yes, gasoline only. No methanol, I don't use it on any of our cars.

Dual walbros, stock feed line and filter. Upgraded rails, adjustable FPR (mounted up front), stock evap line used as return.