Fuel Requirement of Huge Shots!!
Thread Starter
Joined: Nov 2001
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From: Valrico, Florida
Fuel Requirement of Huge Shots!! I need to know what a Walbro 340 intank can handle b4 I need to upgrade? Also, what do I need to upgrade too? I need rwhp figures..
Re: Fuel Requirement of Huge Shots!! If you want to be on the safe side I have heard of people running a intank and inline.
I just have the 340 intank and was told that it will be ok till I get over 600+rwhp.
I just have the 340 intank and was told that it will be ok till I get over 600+rwhp.
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From: Hanover MD
Re: Fuel Requirement of Huge Shots!! i have an intank 340 and inline 340. i would never trust a stock pump to 500rwhp!!!
the 340 intank is probably good to 550 safely, and inline in there too maybe 600plus.
the 340 intank is probably good to 550 safely, and inline in there too maybe 600plus.
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From: Hanover MD
Re: Fuel Requirement of Huge Shots!!
The Walbro 340 pump is rated to handle 600 horsepower @ 100psi fuel pressure . I would play it safe saying 550 hp @ 90psi .
but we dont run 90 psi.....with 2 pumps mine idles at 64 and down the track i see 61.
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Re: Fuel Requirement of Huge Shots!!
but we dont run 90 psi.....with 2 pumps mine idles at 64 and down the track i see 61.
Re: Fuel Requirement of Huge Shots!!
The Walbro 340 pump is rated to handle 600 horsepower @ 100psi fuel pressure . I would play it safe saying 550 hp @ 90psi .
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From: Ft. Lauderdale, FL, USA
Re: Fuel Requirement of Huge Shots!!
Well a stock fuel pump can handle 500-525 rwhp.
I have the Racetronix set-up now.
Joined: Mar 2002
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From: A Racetronix dealer near you...
Re: Fuel Requirement of Huge Shots!! WOW!
The Racetronix single '98 LS1 pump will safely support 550RWHP @ 400KPa / 58PSI / LS1 factory FP. Depending on your BSFC and A/F required we have seen this number as high as 650RWHP. If you require more HP support you can add a pump booster to the Racetronix harness as it is set up for it out of the box! All you have to do is install the supplied connector for the booster and plug it into the connectors provided on the harness. It does not get much simpler than this. With the booster you can safely support 650RWHP+ when running the pump at 16V. DO NOT RUN IT HIGHER THAN 16V as the pump will start to cavitate.
Jack
Racetronix
The Racetronix single '98 LS1 pump will safely support 550RWHP @ 400KPa / 58PSI / LS1 factory FP. Depending on your BSFC and A/F required we have seen this number as high as 650RWHP. If you require more HP support you can add a pump booster to the Racetronix harness as it is set up for it out of the box! All you have to do is install the supplied connector for the booster and plug it into the connectors provided on the harness. It does not get much simpler than this. With the booster you can safely support 650RWHP+ when running the pump at 16V. DO NOT RUN IT HIGHER THAN 16V as the pump will start to cavitate.
Jack
Racetronix
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Re: Fuel Requirement of Huge Shots!! parish8 , maybe I am missing something in your chart , but from what I can tell ; @60 psi the high pressure 255 lph pump 50 gallons per hour which is equivilent to 189.5 litres per hour . This does not make sense to me . In order for this 255 litre per hour fuel pump to pump 255 litres per hour , it must run @20 psi . Either I am blind , or your chart is incorrect . I have been told this information by many vendors which is why I stated it . Please explain . Thanks .
Re: Fuel Requirement of Huge Shots!! i have been told that the 255L pumps are rated for free flow, you need an actual chart like that one to see what it really flows at your fuel presure. i am no expert, i got that chart from the GN site, they have alot of great fuel system info. http://www.gnttype.org/techarea/fuel.../fuelpage.html
from looking at several charts at that site it looks to me like that chart is based on 12volts, if you run a fat wire to the pump and get the full 14.2 volts it will pump more.
from looking at several charts at that site it looks to me like that chart is based on 12volts, if you run a fat wire to the pump and get the full 14.2 volts it will pump more.
