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Fuel Pump and Injectors - enough?

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Old 06-12-2007, 04:13 PM
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Default Fuel Pump and Injectors - enough?

I thought i had this mapped out nicely, but there has been some recent doubt in my "camp" about whether i'm going to be able to supply enough fuel to make 700whp....

Like i said, i'm lookgin to make 700 to the wheels, give or take a few. Currently, the setup is with 2, 255lb walboro fuel pumps, and 60# injectors. I went with 60#ers b/c they were the largest high-impedance injectors i knew of. Recently, it has come to my knowledge that there is a company that makes 83# injectors in high impedance, but they're like $200 or $300.

I'm willing to spedn the extra money on the injectors if need be, but will twin 255lb fuel pumps be able to push enough fuel to make 700 or 750whp?

Will the 60# injectors be enough to make 700 or 750whp?

Thanks! This is all going together by friday (i pray), so quick repsonses are appreciated!!!!!!
Old 06-12-2007, 04:26 PM
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M6 trans, you'll be fine....close to the limit....but fine.
Old 06-12-2007, 05:51 PM
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anyone else?
Old 06-12-2007, 05:55 PM
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60's and twin 255's end of story.

you should be running a methanol kit on there too for pump gas safety, and that should give at least 10% more capability too.
Old 06-12-2007, 07:34 PM
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700hp is not gonna be enough for you, your gonna wanna turn that bad boy up. good luck
Old 06-12-2007, 07:41 PM
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It will be more than enough as long as you have a boost referenced fuel pressure regulator.

I've run the 60's as high as 5 bar base pressure and they still work flawlessly.
Old 06-12-2007, 07:43 PM
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Originally Posted by SSilverSSurfer
700hp is not gonna be enough for you, your gonna wanna turn that bad boy up. good luck
haha... well tha'ts not the question my friend...
i just wanna know if 60#ers will be able to support that kind of power and if 2 pumps will be able to push enough fuel
Old 06-12-2007, 07:44 PM
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Originally Posted by INTMD8
It will be more than enough as long as you have a boost referenced fuel pressure regulator.

I've run the 60's as high as 5 bar base pressure and they still work flawlessly.
i'm not sure what fuel pressure reg. i have, but dont think its boost referenced....
is that going to be a major issue?? or will 60's sstill be ok?
Old 06-12-2007, 07:48 PM
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fuel pressure regulator is a must with 60#ers and any kind of boost..
Old 06-12-2007, 07:52 PM
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Originally Posted by SonofaBish
haha... well tha'ts not the question my friend...
i just wanna know if 60#ers will be able to support that kind of power and if 2 pumps will be able to push enough fuel
sorry, haha, it will be good, im doing the same set up. good luck
Old 06-12-2007, 07:56 PM
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Originally Posted by ty_ty13
fuel pressure regulator is a must with 60#ers and any kind of boost..
i have one, i'm just not real sure what one.... Domination (on this board) is doing the build at his shop, and he ordered the regulator but i dont remember what one he got...
Old 06-12-2007, 10:45 PM
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Originally Posted by SonofaBish
I thought i had this mapped out nicely, but there has been some recent doubt in my "camp" about whether i'm going to be able to supply enough fuel to make 700whp....

Like i said, i'm lookgin to make 700 to the wheels, give or take a few. Currently, the setup is with 2, 255lb walboro fuel pumps, and 60# injectors. I went with 60#ers b/c they were the largest high-impedance injectors i knew of. Recently, it has come to my knowledge that there is a company that makes 83# injectors in high impedance, but they're like $200 or $300.

I'm willing to spedn the extra money on the injectors if need be, but will twin 255lb fuel pumps be able to push enough fuel to make 700 or 750whp?

Will the 60# injectors be enough to make 700 or 750whp?

Thanks! This is all going together by friday (i pray), so quick repsonses are appreciated!!!!!!
check out my link under the fuel and injection...about the calculators...that will help
Old 06-12-2007, 11:09 PM
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Originally Posted by SonofaBish
I thought i had this mapped out nicely, but there has been some recent doubt in my "camp" about whether i'm going to be able to supply enough fuel to make 700whp....

Like i said, i'm lookgin to make 700 to the wheels, give or take a few. Currently, the setup is with 2, 255lb walboro fuel pumps, and 60# injectors. I went with 60#ers b/c they were the largest high-impedance injectors i knew of. Recently, it has come to my knowledge that there is a company that makes 83# injectors in high impedance, but they're like $200 or $300.

I'm willing to spedn the extra money on the injectors if need be, but will twin 255lb fuel pumps be able to push enough fuel to make 700 or 750whp?

Will the 60# injectors be enough to make 700 or 750whp?

Thanks! This is all going together by friday (i pray), so quick repsonses are appreciated!!!!!!


Does a bear **** in the woods? Your 60 lb injectors are good to around 800-850 rwhp. You picked the right injectors for sure for your power goals. Your pumps are good to 1000 rwhp.
Old 06-12-2007, 11:23 PM
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What 52172 said.
Old 06-13-2007, 01:57 AM
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My fuel plumbing is stock (returnless) and I have 60's and dual walbros. At 18psi I can still dump enough fuel to not even register on the wideband. The quarter mile dyno says my car is 740 rwhp.
Old 06-13-2007, 08:24 AM
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sweet... thanks guys!




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