LT5 on E85 - ZR-1 Net Registry Forums

tpepmeie · 09-23-2018

Man, getting these engines to run on E85 is not easy. Granted it's a 14.5:1 compression, 430 CID. With rather large cams.

http://www.zr1.net/forum/showthread.php?t=24966&page=3

calibration is going to be challenging. Changed the obvious Stoich ratio to 9.8:1 for E85. All the cranking and startup enrichment variables will need changed. The meter pegs at 1.1 lambda within a few seconds of startup, equivalent to 16:1 on gas. Engine ran smashingly on 93 octane, but cant hold an idle on E85 yet. On throttle it's incredible. Great responsiveness. (And no raw fuel smell

)

Ah. More work to do.

09-23-2018	#1
tpepmeie Join Date: Aug 2005 Location: Fishers, IN Posts: 813	LT5 on E85 Man, getting these engines to run on E85 is not easy. Granted it's a 14.5:1 compression, 430 CID. With rather large cams. http://www.zr1.net/forum/showthread.php?t=24966&page=3 calibration is going to be challenging. Changed the obvious Stoich ratio to 9.8:1 for E85. All the cranking and startup enrichment variables will need changed. The meter pegs at 1.1 lambda within a few seconds of startup, equivalent to 16:1 on gas. Engine ran smashingly on 93 octane, but cant hold an idle on E85 yet. On throttle it's incredible. Great responsiveness. (And no raw fuel smell) Ah. More work to do.