Enough for E85

[wht67]

I am planning a forged stroker build with big valve ported heads, DR for supercharger, to go with my 2.3l Whipple HO and LT headers. I would like to go E85 for this setup and I have a GT500 fuel pump setup with dual 340lph pumps. Would ID725 injectors support my needs?

 

[s8v4o]

Your injectors will support roughly 658 crank HP with E85 and 856 on gas according to the fuelinjectorclinic. That's at 90% duty cycle. How much HP do you want to make?

 

[wht67]

Your injectors will support roughly 658 crank HP with E85 and 856 on gas according to the fuelinjectorclinic. That's at 90% duty cycle. How much HP do you want to make?

There is a pretty good deal on ID725 injectors in the classifieds and I was thinking about getting them. I want to make 550 to 600 rwhp on e85 so I don't think the 725s will cut it. I only want to buy injectors once.

 

[s8v4o]

Yeah they might be little small if you're looking for 600RWHP, especially if you want a little room to grow. That calculation was based on 90% duty cycle for the injectors.

 

[Greg Hazlett]

Fuel is one of things that people neglect to budget for until the end; I recommend the 1000's so you have enough injector, you have room to grow and your tuner is comfortable with the setup; the worst scenario is you arrive at the tuner for a session, starts tuning and tells you the session is over since he can't do anymore since the injectors/pumps are maxed out.

 

[BruceH]

I supported 599 on e85 with a whipple, 80lb injectors, GT500 pumps, and a single 40a bap.

 

[Bad_T]

Ethanol also loves compression, so don't forget about power to be had there. I had 10:1 compression ratio when I was using e98 fuel and pushing 36lbs of boost. It was in a supra though, not a mustang.