backup pump?
03-13-2007, 02:51 AM
#1
Staging Lane
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backup pump? i asked this ? over in fuel and injection two weeks ago and no reply so im asking it here
hey whats up guys first off im running a 347 with a gt42-76 turbo i have 75 lb injectors and converter and i am running a single bosch 420l. my goal is to have the fuel system capable of supporting 950rwhp. i will also be running a meth kit.
supposedly the bosch 420l supports between 600 and 750rwhp on an FI application (ive heard different things from different sources) so i will have to run a second pump.
i have a sumped fuel cell with two outlets i was planning on running one pump from each outlet and the tieng them. the car will mostly be doing street driving (no street racing lol) so most of the time i will only need the power of one pump so when i want to race or go faster i would just flip a switch of install some sort of relay that atuomatically comes on at a certain point
my question was which pump should i use as my second pump ie should i go with another bosch 420l or with a walbro 255. i know the walbro supports 500 rwhp on an FI setup but would i just add this number to the capability of my bosch420l? the other concern with the walbro 255 is the big psi drop as load increases.
i would really like to run the walbro seeing as my wallet is hurting from the rest of this build lol however i do not want to skimp out on a vital part of the car. but i only want to put what is nessecary to reach my goal and do so realibly
hey whats up guys first off im running a 347 with a gt42-76 turbo i have 75 lb injectors and converter and i am running a single bosch 420l. my goal is to have the fuel system capable of supporting 950rwhp. i will also be running a meth kit.
supposedly the bosch 420l supports between 600 and 750rwhp on an FI application (ive heard different things from different sources) so i will have to run a second pump.
i have a sumped fuel cell with two outlets i was planning on running one pump from each outlet and the tieng them. the car will mostly be doing street driving (no street racing lol) so most of the time i will only need the power of one pump so when i want to race or go faster i would just flip a switch of install some sort of relay that atuomatically comes on at a certain point
my question was which pump should i use as my second pump ie should i go with another bosch 420l or with a walbro 255. i know the walbro supports 500 rwhp on an FI setup but would i just add this number to the capability of my bosch420l? the other concern with the walbro 255 is the big psi drop as load increases.
i would really like to run the walbro seeing as my wallet is hurting from the rest of this build lol however i do not want to skimp out on a vital part of the car. but i only want to put what is nessecary to reach my goal and do so realibly
03-13-2007, 09:53 PM
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I run two A1000 fuel pumps. Speed Inc set it up so when the engine sees a set boost level it automaticly turns the second pump on. It you set it on a switch you better rememeber to turn it on every time your going to get on it. I would get another bosch pump.
03-14-2007, 06:21 PM
#5
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Don't skimp on your fuel system... Get the Bosch, they are indestructible.
2 Bosch 420's running parallel will put out enough fuel for 1400 hp +
I have 720RWHP with 1 modified Bosch 420 pump and a BAP.
The second pump I put on is external. It comes on via MSD window switch.
I have it kick on at 4000rpm. The fuel pressure is boost referenced and stays consistently at 75psi at 7200rpm's with more if needed. (20psi/meth soon)
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2 Bosch 420's running parallel will put out enough fuel for 1400 hp +
I have 720RWHP with 1 modified Bosch 420 pump and a BAP.
The second pump I put on is external. It comes on via MSD window switch.
I have it kick on at 4000rpm. The fuel pressure is boost referenced and stays consistently at 75psi at 7200rpm's with more if needed. (20psi/meth soon)
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03-15-2007, 09:16 AM
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Originally Posted by C6Dude
Don't skimp on your fuel system... Get the Bosch, they are indestructible.
2 Bosch 420's running parallel will put out enough fuel for 1400 hp +
I have 720RWHP with 1 modified Bosch 420 pump and a BAP.
The second pump I put on is external. It comes on via MSD window switch.
I have it kick on at 4000rpm. The fuel pressure is boost referenced and stays consistently at 75psi at 7200rpm's with more if needed. (20psi/meth soon)
.
.
.
2 Bosch 420's running parallel will put out enough fuel for 1400 hp +
I have 720RWHP with 1 modified Bosch 420 pump and a BAP.
The second pump I put on is external. It comes on via MSD window switch.
I have it kick on at 4000rpm. The fuel pressure is boost referenced and stays consistently at 75psi at 7200rpm's with more if needed. (20psi/meth soon)
.
.
.
NIce looking car!!! Props!