[PEP FAB]

how much hp are these good for? 83mm turbo on l92/lq4, 91 pump gas with water/meth

 

[lean is mean]

Mine were struggling a little north of 800whp on e85

 

[zbrown]

~1500hp on gas on a low base press

 

[Turbo Tim]

~1500hp on gas on a low base press

You'll be fine... High 7's / 5.0s

 

[sheldonw]

I'm just about to order injectors too.
At what hp would you go to 160lbs over 120's on C16 or Q16? Its a 400 sbc if that matters

 

[lean is mean]

No reason not to order 160's if you plan on expanding in the future I ordered 120's and less than 2 months later ordered 160's the initial cost isn't different enough to short change your self in my opinion.

 

[sheldonw]

No reason not to order 160's if you plan on expanding in the future I ordered 120's and less than 2 months later ordered 160's the initial cost isn't different enough to short change your self in my opinion.

Thanks its my first go at efi just worried about not being able to idle clean

 

[DHR Darren]

I have 120's to drive on and 225's to add in when on alcohol.

 

[S2H]

What EFI system?
Holley 160's have no issues with clean idle...
I've put them in several cars with zero issues at idle.

 

[JMSPERFORMANCE]

i have 160's on my mod motor/98mm and am at 58% duty cycle with a 3500lb car going 167mph. im running a base pressure of 50psi and is 1:1 boost referenced so 75psi pressure at full boost. running q16, duty cyle went up 5-6 % with the fuel switch from c16, something to keep in mind. idles clean and no issues, i also run in batch fire fast xfi, will run cleaner with sequential setup.

 

[sheldonw]

thanks guys 160's it is

 

[LosLS2]

Mine were struggling a little north of 800whp on e85

You sure you aren't out of pump. I went 8.9 @ 153 @ 3850# @ 89-91% IDC on the Holley 120's on e85. That's about 1000 rwhp.

 

[LosLS2]

What EFI system?
Holley 160's have no issues with clean idle...
I've put them in several cars with zero issues at idle.

+1. Idle at 900 rpm @ 14.5:1 AFR on pump gas

 

[LosLS2]

With that combo on pump gas, 160's are way overkill though. Even 120's is alot.

 

[S2H]

You sure you aren't out of pump. I went 8.9 @ 153 @ 3850# @ 89-91% IDC on the Holley 120's on e85. That's about 1000 rwhp.

what base pressure?

90% IDC on 120lb injectors with a base of 43psi on e85 is only about 950 at the crank

160's would put you around 1250 at the crank with a base of 43psi

and that is all assuming you are actually very efficient with a BSFC of 0.6

 

[zbrown]

I

what base pressure?

90% IDC on 120lb injectors with a base of 43psi on e85 is only about 950 at the crank

160's would put you around 1250 at the crank with a base of 43psi

and that is all assuming you are actually very efficient with a BSFC of 0.6

Lol so 8-120s at 90% with a bsfc of .6 gives u 950fly? Lolz okl

 

[S2H]

I

Lol so 8-120s at 90% with a bsfc of .6 gives u 950fly? Lolz okl

do the math... fuel Flow dictates power....
its a very simple math calculation to figure out potential maximum power to be made
physics doesnt lie.

 

[zbrown]

do the math... fuel Flow dictates power....
its a very simple math calculation to figure out potential maximum power to be made
physics doesnt lie.

No shit and u are way the fuck off

120x8 = 960lb/hr

960/bsfc of .6 = 1600

1600x DC of .9= 1440hp

 

[zbrown]

You are the one that said .6 for e85 not me....

.6 is a ballpark gasoline bsfc..

I see e85 run from .8-85

With a .85 bsfc for typical e85 it is 1015hp


So those injectors at rated flow/pressure will be

~1400 HP gas

~1000 HP E85

 

[S2H]

You are the one that said .6 not me....

.6 is a ballpark gasoline bsfc..

I see e85 run from .8-85

With a .85 bsfc for typical e85 it is 1015hp

I assuming bsfc around .6 based on efficient forced induction....and then the extra 30 % ish fuel you use on e85



e85 ends up a little less power than what you have there...
1015/960... close enough...
either way... Flywheel horsepower... not rear wheel horsepower...