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Old 05-27-2007, 04:18 PM
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Originally Posted by osen007
HOLLY DOT COM SAYS ALONG AS THERE IS 4-7 PSI AT W.O.T YOU SHOULD BE FINE
You need the volume with the pressure. you can set a 25 gph pump at 4 or 7 psi, and blow up the motor.

Holley's web site is written 100% about cars. their tech on marine is near useless. If they made that blanket statement about pressure settings, they are getting worse.
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Old 05-27-2007, 06:12 PM
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Ray,
The white spring is rated 10.5-11 lbs at idle and supports 1200HP. My experience says the green spring will work without a regulator and CV and I both say this spring will support 750-800 hp...try it without a regulator and see if doesn't fix your problems.
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Old 05-27-2007, 06:49 PM
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What kind of fuel filters are you using? If they are not large enough capacity, they would cause this problem also.
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Old 05-28-2007, 07:20 AM
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Originally Posted by BenPerfected
Ray,
The white spring is rated 10.5-11 lbs at idle and supports 1200HP. My experience says the green spring will work without a regulator and CV and I both say this spring will support 750-800 hp...try it without a regulator and see if doesn't fix your problems.
i agree with the spring, but the reg would still be nice.

this pump can support more than 1200 too. it is absolutely incredible. the engines pictured above are 1250 h.p . they never loose pressure, and maimtain pressure from idle to 6900 .

like i said incredible.


You need the volume with the pressure. you can set a 25 gph pump at 4 or 7 psi, and blow up the motor.

this is true but with a 800 hp engine usind -10 and -8 fuel line it will never support the volumein the fuel system to produce pressure falsely, aspecially with the return sytle reg.

but good point . very good.
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