Thoughts on E85

[Z U L8R]

this is what i've noticed many times on the dyno. as far as adding timing, typical scenario:

i do a dyno pull with a car and it makes blah power and 8psi of boost, i check the base timing and it's a tad retarded, when i advance the timing and do another pull on the dyno it'll drop down to 7psi, yet make more power. i know it's because it's closer to MBT, i'm just sayin that's what i see.

i advance timing, boost drops. i haven't payed particular attention to if it made boost sooner, just saying that's what i see a lot.

pretty much like clarke said everything ive seen says you're going have to flow around 30-35% more fuel, and gas mileage will decrease a little. also ive herd e85 expands alot more than regular gas when it is expelled as exhaust gasses. if that theory is true it might help quicken your spool.

this may be where i got too naive.... throwing out adding timing since it has higher octane, put that aside, all things the same, the only difference in gasoline at stoich vs e85 at stoich...is this statement true or false?

when e85 is combusted at stoich it will create more exaust pressure than 93 octane pump gas combusted at stoich? true or false?

what are the EGT differences from e85 vs gas both at stoich or the same lambda ratio?



Dave

[SPOOLIN]

this is what i've noticed many times on the dyno. as far as adding timing, typical scenario:

i do a dyno pull with a car and it makes blah power and 8psi of boost, i check the base timing and it's a tad retarded, when i advance the timing and do another pull on the dyno it'll drop down to 7psi, yet make more power. i know it's because it's closer to MBT, i'm just sayin that's what i see.

i advance timing, boost drops. i haven't payed particular attention to if it made boost sooner, just saying that's what i see a lot.






Dave

are you talking about cam timing ?