Timing With E85

[gmchaser]

Hey everyone.

Just out of curiosity what timing figures are you guys running in your rb26's and rb25's with e85.

I have an rb25 s2 standard head and cams t04z with supporting mods 10.8 -11.2 afr 20psi =21* up to 5500rpm

22* 6000rpm

23* 6500rpm

24*7000rpm to 8000rpm

24psi= 16* up to 5500rpm

17* 6000rpm

18* 6500rpm

19* 7000rpm to 8000rpm

[STATUS]

way to rich.

[gmchaser]

Anyone

[STATUS]

theres prob 20rwkw in fixing your fueling issue.

[breaker1845]

Extremely rich. Should be around low 12's for AFR's for E85 from memory. You could probably push a few more degrees in timing but really depends on a heap of variables so generally asking it's hard to give a definite answer. Best to be safe and not cause any damage by checking your timing carefully on the dyno. As Trent mentioned, fix your fueling up as you are putting in way too much for E85, even 98 isn't that rich.