brisvr4
Member
Where exactly did you get this info from? Try 30 - 40% more.
oil squirters.
- Thread starter youda
- Start date
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Where exactly did you get this info from? Try 30 - 40% more.
Rockabilly
Well-Known Member
^^ Also how can E85 be burning slower ? If it was, you'd be retarding it more btds. I'm sure it burns in less than 30deg of crank.
Cheers !
Cheers !
I've been told that with E85, you need 30% more inj / pump on an N/A vehicle. With a turbo application, this increases progressively as revs/ boost increase.
Is this true?
I bought myself a set of 1600cc injectors just in case I decide to give E85 a shot!
Is this true?
I bought myself a set of 1600cc injectors just in case I decide to give E85 a shot!
Agreed with Brisvr4
E85 has a lower specific energy (or energy per unit volume) by approximately the amount he mentioned above (this is when compared to 98oct). Therefore, E85 should last this amount less and apparently does so nicely
.
The main power benefit from e85 is due to its ability to resist pre-ignition and detonation (as it burns slower). This usually allows for more aggressive ignition curve’s, higher boost levels or higher compression ratio’s, or you can be like the kool kids and take advantage of all three.
E85 has a lower specific energy (or energy per unit volume) by approximately the amount he mentioned above (this is when compared to 98oct). Therefore, E85 should last this amount less and apparently does so nicely
.The main power benefit from e85 is due to its ability to resist pre-ignition and detonation (as it burns slower). This usually allows for more aggressive ignition curve’s, higher boost levels or higher compression ratio’s, or you can be like the kool kids and take advantage of all three.
lol agreeing with the fast guy!
The reality is ( or at least in my dyno room) is that E85 needs around 25% more by volume compared to petrol ... NA and Turbo. The reality also is that WOT mixtures have no problem
being tuned a full AFR point leaner ( ie 11.5 PULP to 12.5 E85 for turbo, and 12.5 to 13.3 for NA. ) I set this by looking at exhaust temperatures mainly. The E85 motors have survived months of
competition, winning State Rally rounds and circuit racing.... so it is obviously reliable ! Best torque is also made around these AFR's.... Our reality is that the competition tunes use around 15% more total fuel
over comparable events run on PULP. The road motors ( ie my own vehicle) varies from 10%-15% more consumption on E85.
Further , ethanol at the same mixture strength burns 100* cooler than petrol . It also takes around 4 times the heat energy to evaporate ethanol over petrol. Hence it tends to suck the heat
from the combustion chamber.... less overall heat stress on the piston. Thats why I'm not bothering too much over oil squirters in my engines running on E85.
youda
Well-Known Member
If only it was more freely available up here
