BS3, cranking issues (long time to start)

[fatride]

I changed my car over to E85. The only problem I'm having is cold cranking and warm cranking. I went from 65lbers to 120lb injectors. Can someone help me out with the cranking, after start delay, and after start corrections for BS3??? I think my PW (ms) are not correct. Does someone have a good idea what range I should be at with the 120lbs...? Now to start the car I need to give it a little petal and about 15/20 seconds to start.
Thanks for any help

 

[S2V6RACER]

You need to increase the cranking pulse width in the cranking fuel tables. Increase them by the % difference between the two injectors for starters.......

Hope this helps.

 

[HighPSI]

When you go from a smaller injector to a larger injector you need to DECREASE the p/w the appropriate amount

A typical cranking p/w for 65# injectors is in the 6 m/s range on a 231 ci motor on gasoline. Since your injector is nearly twice as large you would need to cut it down to the 3 second range ON GASOLINE. Since you are using E-85, I would try a p/w of around 4 1/2 to 5 m/s

 

[JDEstill]

A few years back I posted a theoretical approach to cranking pulsewidths:

F.A.S.T Crank / Afterstart help - TurboBuick.Com

You could give that a try. You'd want to multiply the result by whatever % more fuel E85 takes over regular gasoline. So if the result was 10 ms, and E85 takes 30% more fuel than gasoline (is that the right number?), then 10 x 1.3 = 13 ms is what you'd put in.

If you try it, let us know how it works

John

 

[fatride]

Thanks guys! I'll try it out in the next day or 2 and let you know.
Thanks again for the tips

 

[JDEstill]

just curious fatride - did you ever get cranking issues worked out?