Which injectors for E85

[Itsonlyanlt1]

Planning to switch to E85 only soon, how big do I need to go?

[Grr]

N/A, get the 60-65# seimens/deka. If you plan on more, get the 79# ones, no sense im buying injectors twice, these new ones idle just fine

[Itsonlyanlt1]

If I were to spray a 150 shot, would I want the bigger ones?

[ksmyss]

what are your future plans for the car? what are your current injectors setting at duty cycle wise? i think anything over 42s would be overkill for even a decent 350 with heads and cam. i will be running e85 with my setup once it hits the street again and i have 37lbs.

as far as a 150 shot, if its a wet shot no if its a dry shot then yes you need bigger.

[BLOWNDFIZ]

If I were to spray a 150 shot, would I want the bigger ones?

Depends....Are you going with a wet kit or dry? Wet you don't need anything bigger than your NA requirements (you will be adding fuel through jets), if dry then yes you need bigger injectors.

FWIW, I am working on createing an E85 tune for my car. I currently run 75lb/hr injectors and 13.9psi @ 6400RPM my DC% estimates out at 86.9% on 93 pump according to Accel DFI calculations. If I were to add 25% more fuel for the E85 at the same psi and RPM my DC% would be 118.55%:censored:. So 75's are too small for me unless I raise my base FP to 55psi in which case 75's would be borderline (94.8%). Keep in mind this is a boosted estimate so they are really not applicable to your set-up.



If I were you I'd go with 42's and call it a day.

[Itsonlyanlt1]

what are your future plans for the car? what are your current injectors setting at duty cycle wise? i think anything over 42s would be overkill for even a decent 350 with heads and cam. i will be running e85 with my setup once it hits the street again and i have 37lbs.

as far as a 150 shot, if its a wet shot no if its a dry shot then yes you need bigger.
The car will be a H/C w/ 150 shot. 230/238 AI cam. I was suprised when someone else said to use 60lb. Wouldnt 37 or 42 be just fine. Im using a dry shot first, then later may be going to a wet. I have measurd the duty cycle on my stock injectors yet, because I dont have my cam in and I dont have the bottle setup yet either. Just want to plan ahead. Thanks for the input.

[ksmyss]

also a wet shot with e85 will need an alki noid for the fuel side.