trigger man

Hey guys are 83 lb holley injectors big enough to support a 700-800 hp TT lq4 on e85?

Calypso

iTrader: (1)

Here's some info I found searching through threads:

I made 617/623 at 82% on e85. Also run 8an feed, dual walbro255's, 58psi base pessure. Hope that helps.
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80s @ 65psi base, 755rwhp through an 80e @95% IDC on e85.
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80lbs injector for turbo application is good for about 925 Crank HP at 80% duty cycle (pump gas)

typhoon1015

iTrader: (5)

They are borderline as said above, if you dont have them yet, look bigger.

I am at 767hp on 58psi base FP -10 feed at 15psi boost about 95% DC as well. I have a little more left but not much.

I8UR4RD

iTrader: (16)

no ***

Calypso

iTrader: (1)

Another example I found:

i have FIC 104lb injectors, i run them at 68base which puts them at 118lb injectors. i use them for E85 at 816rwhp i was at 80% duty cycle

silver_82

do you have any means to raise the base pressure significantly? Id agree with typhoon1015, if you havent bought them yet, look for a diff set

skinnies

iTrader: (33)

We run the Seimen 80's to 850+ rwhp with enough pressure behind them, this is on e85 btw.

Calypso

iTrader: (1)

What pressure and DC? Actually I'm in the same boat as the OP. Have new 80lb Seimens and would rather not spend $$ on bigger ones if i can hit 750rwhp on E85 with these.

It brings up a good question. For a street car that only sees WOT for a couple seconds at a time, is it even a problem?

Or does running higher base pressure create too much heat & stress on the pumps/injectors for normal cruising?

trigger man

That's a good proposed question Calypso! I havnt bought mine yet so i'm glad I checked here first.Holley makes a 120 lb also but I worry how hard would it be to get a tune on a lot of cruising.

Calypso

iTrader: (1)

Still curious if anyone has more info or opinions on this...