Injector Selection
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Joined: May 2005
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From: Northfield Center Ohio
Injector Selection
I am isntalling a LS2 402 into my 01 Vette. All Forged bottom, AFR 225's, 580/590 Lift Cam, 11.2:1 Compression, FAST 78mm Intake with Ported TB, Long Tubes, no cats, Corsa's, ect ect ect, I have a NX Wet system installed on the car so I might still use it, What Brand and Size would be recommended? I dont want any cheap crap injectors. The injectors that are on the car now have the LS6 factory injector number on the side. When I bought the car the owner said it had "larger intense pulse fuel injectors" on it???? I was able to put down 538 RWHP with NOS and 498 RWHP N/A with those injectors.
Racer
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From: Murrieta Ca..... America, fun while it lasted
Originally Posted by SCannon
I am isntalling a LS2 402 into my 01 Vette. All Forged bottom, AFR 225's, 580/590 Lift Cam, 11.2:1 Compression, FAST 78mm Intake with Ported TB, Long Tubes, no cats, Corsa's, ect ect ect, I have a NX Wet system installed on the car so I might still use it, What Brand and Size would be recommended? I dont want any cheap crap injectors. The injectors that are on the car now have the LS6 factory injector number on the side. When I bought the car the owner said it had "larger intense pulse fuel injectors" on it???? I was able to put down 538 RWHP with NOS and 498 RWHP N/A with those injectors.
http://www.nitrousoutlet.com/ for a plug and play separate fuel system for the bottle. He has a awesome kit.
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From: Lawrenceville GA
I like the ...
Originally Posted by SCannon
I am isntalling a LS2 402 into my 01 Vette. All Forged bottom, AFR 225's, 580/590 Lift Cam, 11.2:1 Compression, FAST 78mm Intake with Ported TB, Long Tubes, no cats, Corsa's, ect ect ect, I have a NX Wet system installed on the car so I might still use it, What Brand and Size would be recommended? I dont want any cheap crap injectors. The injectors that are on the car now have the LS6 factory injector number on the side. When I bought the car the owner said it had "larger intense pulse fuel injectors" on it???? I was able to put down 538 RWHP with NOS and 498 RWHP N/A with those injectors.
I've not seen that type of injector, in the many 100's I've flow tested...
28.8's and 498 RWHP,[approx 550FWHP]?? What kind of duty cycle did you see?
Was the dyno equipped with a WB? If so, what was the A/F during that pull?
Why only 40HP difference in NOS, vs NA??
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A general guideline goes something like this:
BSFC x HP / # of Injectors = Lbs/hr rating of injector @ 100%
BSFC - Brake Specific Fuel Consuption; it is a measure of how 'efficient' the engine is at converting fuel to HP; the lower the number, the more 'efficient' the engine is; I use .45 for the LSx engines
HP - use crank HP (estimate if not exactly known)
So, assume 500HP at the crank (or 425RWHP assuming ~15% drivetrain loss):
.45 x 500 / 8 = 28.125 lbs/hr
Remember, this is 100% duty cycle, and you want some margin of safety. So, shoot for 85% max duty cycle. Therefore, divide by .85
28.125 / .85 = 33.08 lbs/hr
Let me know if I can help.
FYI, the C6 Z06 has ~40lb/hr injectors.
BSFC x HP / # of Injectors = Lbs/hr rating of injector @ 100%
BSFC - Brake Specific Fuel Consuption; it is a measure of how 'efficient' the engine is at converting fuel to HP; the lower the number, the more 'efficient' the engine is; I use .45 for the LSx engines
HP - use crank HP (estimate if not exactly known)
So, assume 500HP at the crank (or 425RWHP assuming ~15% drivetrain loss):
.45 x 500 / 8 = 28.125 lbs/hr
Remember, this is 100% duty cycle, and you want some margin of safety. So, shoot for 85% max duty cycle. Therefore, divide by .85
28.125 / .85 = 33.08 lbs/hr
Let me know if I can help.
FYI, the C6 Z06 has ~40lb/hr injectors.
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From: Northfield Center Ohio
Originally Posted by Old geezer
"intense pulse" comment!!
I've not seen that type of injector, in the many 100's I've flow tested...
28.8's and 498 RWHP,[approx 550FWHP]?? What kind of duty cycle did you see?
Was the dyno equipped with a WB? If so, what was the A/F during that pull?
Why only 40HP difference in NOS, vs NA??
I've not seen that type of injector, in the many 100's I've flow tested...
28.8's and 498 RWHP,[approx 550FWHP]?? What kind of duty cycle did you see?
Was the dyno equipped with a WB? If so, what was the A/F during that pull?
Why only 40HP difference in NOS, vs NA??
Im thinking of going with 42's. Now the only decision is what brand
