Fuel system needed for 700rwhp?
Fuel system needed for 700rwhp? I'm running a 408 with a d-1sc at about 7lbs. Right now I have a 255L inline pump and a KB boost-a-pump added on. I start dropping pressure at about 4500rpm and 500rwhp. The tuner says a bigger in-tank ( single 255L ) is all I need to add. Right now I'm only trying for 600rwhp but plan on adding boost this winter. What do I need to support 700rwhp? How much will the stock lines and rail support? Thanks!
Several people have have ran dual intank pumps using Walbro high pressure fuel pumps. One stays on while the other kick in via a hobbs switch and boosts fuel pressure as needed. 
O yeah, I also have 60lbs. mototrons. Are the dual setups sold as a kit with the switch or are they custom deals? Would it work to just wire them both on at all times?
well I have a sumped tank
aerotmotive a1000 fuel pump
-8 up into speed inc rails
-6 into CAS regulator
stock lines back to sump
hoping im not going to have hte cavatating problems most do with the a1000, if so Ill add a fuel cooler to help correct
need to also get the voltage regulator from aeromotive
ed
aerotmotive a1000 fuel pump
-8 up into speed inc rails
-6 into CAS regulator
stock lines back to sump
hoping im not going to have hte cavatating problems most do with the a1000, if so Ill add a fuel cooler to help correct
need to also get the voltage regulator from aeromotive
ed
I think you need dual walbro pumps. You can do this yourself like I did or get one from Racetronix. You won't need a B_A_P with dual walbros. The mototron 60# are good for well over 700rwhp as shown by Mightymouse.
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From: A Racetronix dealer near you...
700RWHP requires a well designed DP system.
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Originally Posted by BOOSTAT4500
I'm running a 408 with a d-1sc at about 7lbs. Right now I have a 255L inline pump and a KB boost-a-pump added on. I start dropping pressure at about 4500rpm and 500rwhp. The tuner says a bigger in-tank ( single 255L ) is all I need to add. Right now I'm only trying for 600rwhp but plan on adding boost this winter. What do I need to support 700rwhp? How much will the stock lines and rail support? Thanks!
The stock feed line just can't hold enough fuel. 
Originally Posted by cablebandit
I think you need dual walbro pumps. You can do this yourself like I did or get one from Racetronix. You won't need a B_A_P with dual walbros. The mototron 60# are good for well over 700rwhp as shown by Mightymouse.
The HP we see with a blower and a turbo are 2 different things.... with the same Injectors...... A turbo is more efficent then a blower and the HP you see at the rear wheels might be the same but the HP the motor is eating is not seen with a turbo like it is with a blower...... The motor is turning the blower and is taking HP to do that so the injector will need to be bigger with a blower motor to reach the same HP as a turbo........
Kyle
Joined: Mar 2002
Posts: 2,032
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From: A Racetronix dealer near you...
Originally Posted by Slowhawk
Your problem is the stock fuel lines/rails. 5Liters car has a feed/return setup with regulator.Stopped his fuel problem The stock feed line just can't hold enough fuel.
The stock feed line just can't hold enough fuel.Read from top to bottom and learn:
https://ls1tech.com/forums/showthrea...ght=Racetronix
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Originally Posted by Racetronix
No, it is the regulation point.
Read from top to bottom and learn:
https://ls1tech.com/forums/showthrea...ght=Racetronix
Read from top to bottom and learn:
https://ls1tech.com/forums/showthrea...ght=Racetronix
I learned by running into the problem then fixing it with what we didI'm sure your way works great,just posted how we beat the problem,now running lower fuel pressure with some room to spare
Dual intanks sound like a good idea.
Or you could run aftermarket stuff for the rails, fuel line, regulator and tank.
I currently run a Speed Inc. gas tank and some aftermarket rails. I run one external Weldon 2025 pump right now. I am probably going to dual Bosch pumps from Speed Inc. very soon. Those would again be dual external pumps.
Or you could run aftermarket stuff for the rails, fuel line, regulator and tank.
I currently run a Speed Inc. gas tank and some aftermarket rails. I run one external Weldon 2025 pump right now. I am probably going to dual Bosch pumps from Speed Inc. very soon. Those would again be dual external pumps.
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
Originally Posted by Pro Stock John
Dual intanks sound like a good idea.
Or you could run aftermarket stuff for the rails, fuel line, regulator and tank.
I currently run a Speed Inc. gas tank and some aftermarket rails. I run one external Weldon 2025 pump right now. I am probably going to dual Bosch pumps from Speed Inc. very soon. Those would again be dual external pumps.
Or you could run aftermarket stuff for the rails, fuel line, regulator and tank.
I currently run a Speed Inc. gas tank and some aftermarket rails. I run one external Weldon 2025 pump right now. I am probably going to dual Bosch pumps from Speed Inc. very soon. Those would again be dual external pumps.
They work well though.
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- Racetronix C5 Intank Fuel Pump
- Kenny Bell Boost-A-Pump
- -8an send line
- -6an return line
- CB Performance Hard Line Adapters
- Speed Inc Billet Fuel Rails
- CAS Billet Fuel Regulator
- 75# RC Engineering HI Fuel Injectors
Good for a 1000 rwhp.
- Kenny Bell Boost-A-Pump
- -8an send line
- -6an return line
- CB Performance Hard Line Adapters
- Speed Inc Billet Fuel Rails
- CAS Billet Fuel Regulator
- 75# RC Engineering HI Fuel Injectors
Good for a 1000 rwhp.
home made twin in tank gss340's
-8 to speed inc BIG filter
-8 up to speed inc rails
-8 crossover
-6 to cas regulator
stock pressure line back to the stock tank
mototron 60's set to 50psi with the vaccum off & goes up 1psi/psi boost
*edit* both pumps run all the time off of one radio shack 30A relay w/ fused link to the accessory terminal under hood. stock pump power wire triggers relay to ON.
-8 to speed inc BIG filter
-8 up to speed inc rails
-8 crossover
-6 to cas regulator
stock pressure line back to the stock tank
mototron 60's set to 50psi with the vaccum off & goes up 1psi/psi boost
*edit* both pumps run all the time off of one radio shack 30A relay w/ fused link to the accessory terminal under hood. stock pump power wire triggers relay to ON.
David, next time you are under that car, check that relay. Mine melted eventually running both pumps from one relay. Could just be me but would hate for ya to get stuck because of it. I could only tell because one of the "legs" wobbled. I was alerted to the problem because the pumps wouldn't turn off when I removed the key The B_A_P comes in the one/two pump flavors...the two pump model is a 40amp unit and the one pump model is 20 amp I believe.....something to think about.
The B_A_P comes in the one/two pump flavors...the two pump model is a 40amp unit and the one pump model is 20 amp I believe.....something to think about.
Originally Posted by MIGHTYMOUSE
home made twin in tank gss340's
-8 to speed inc BIG filter
-8 up to speed inc rails
-8 crossover
-6 to cas regulator
stock pressure line back to the stock tank
mototron 60's set to 50psi with the vaccum off & goes up 1psi/psi boost
*edit* both pumps run all the time off of one radio shack 30A relay w/ fused link to the accessory terminal under hood. stock pump power wire triggers relay to ON.
-8 to speed inc BIG filter
-8 up to speed inc rails
-8 crossover
-6 to cas regulator
stock pressure line back to the stock tank
mototron 60's set to 50psi with the vaccum off & goes up 1psi/psi boost
*edit* both pumps run all the time off of one radio shack 30A relay w/ fused link to the accessory terminal under hood. stock pump power wire triggers relay to ON.
AHA!! Maybe you are right......... but I did check the ground When are you going to run mid 9s....I see you got the mph for it...something new to think about 
When are you going to run mid 9s....I see you got the mph for it...something new to think about
Originally Posted by MIGHTYMOUSE
has been like this for nearing a year now.. i switched from a two relay set up because one of them melted.. turned out to be a bad ground... something to think about
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
Originally Posted by MIGHTYMOUSE
has been like this for nearing a year now.. i switched from a two relay set up because one of them melted.. turned out to be a bad ground... something to think about
Our DP harness has a dedicated relay and fuse for each pump so they can be controlled independently.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
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Please support a Racetronix dealer near you for personalized service.
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