tony94s4

iTrader: (1)

how much more timing r u guys running on e85 than gas lets say up between 15-25psi,

also compared to race gas like c16 do u run same or less timing

thnx

killahrx7

21 psi 12 degrees. was only testing.

ChrisRX8PR

I am also interested in this....

My engine is high compression(10:1) and I am running around 20psi of boost on e85 too.

Thanks.

Chris

tony94s4

iTrader: (1)

we r running 15* @ 20 psi,

will try some more next time

ChrisRX8PR

Oh I see. I am running about 8Deg advance at 20psi across the board with a split of 8 falling to 6 towards the top end.

My engine is high compression though(10:1).

Thanks for the info....anyone else?

Chris

IronMdnX

iTrader: (1)

Brought the thread back from the dead.
Dynoing my car most likely on Wed.
Right now running .76 - .78 lambada(11.3-11.5 gas AFR)
25psi boost falling to 23psi above 7k (out of turbo)
12* 0 split at 25psi
13.5* 0 split at 23psi
15* 0 split at 20psi
EGT's are 1450-1500f steady

Should I bother to tune leaner or add more timing? Or am I pressing my luck as is.

I have an hour avail on the dyno this session.

Viper GTSR

How's your knock logs look like? Hell, if they're good... raise the boost a bit* (~27psi)

Erdin

Any updates?

sen2two

iTrader: (10)

would like to know how the timing advance compares to c16.

and how much cooler your engine temps are with E85.

Kickitinwashougal

is e85 decent to run on a n/a. Or am I being crazy?

rx72c

iTrader: (8)

with e85. I generally run 2-3 degrees more timing then normal pump fuel.

On e85 you can run around 5-6 degree advance at around 30psi no worries with a 8 degree split.

Around 35psi run around 3-4 degree advance with 8 degree split.

Once you start getting close to 40psi start to get some knock with even 0 degrees advance.(you can use water to get rid of the knock, we have done that on a customer car).

25psi run around 9 degrees advance with 8 degree split

20psi run around 11 degrees advance with 8 degree split.


Just remember guys. If the engine is built right, it will not a huge amount of advance to make bulk power. Only engines with crappy porting will need lots of timing to make ok power.

ronbros3

THANKS 72c,, good info, YUP,, somethin to think about !!

RXTASY57

iTrader: (2)

I made this little chart for my E6K.

Erdin

Is this on a 13b or 20b and is it ported

RXTASY57

iTrader: (2)

13B halfbridge

Erdin

Do you think the timing would change alot more, if it was pure methanol?

RXTASY57

iTrader: (2)

I would think you could add much more timing with pure meth. Takes a lot to get that stuff to detonate.