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Username Post: e85 question
grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 17486
grumpyvette
Age: 72
Loc: FLORIDA USA
Reg: 03-16-01
04-02-19 06:01 AM - Post#2763472    
    In response to 65_Impala



[​IMG]
14.7:1-15:1 static compression and 12.5:1 dynamic compression,
is generally considered about ideal for ethanol powered e85 engines
if you run e85 in an engine with low enough compression that the engine can be run on pump gas youll see very little benefit from e85 fuel use.
boost the mechanical compression to about 15:1 and get the cam timing
to produce about a 12.5:1 dynamic compression and the engines characteristics and power potential increases remarkably

if you use a low compression engine ethanol fuel provides less mileage per gallon and less power,
but ethanol and METHANOL both potentially can provide a significant boost in power if the engines built with a high enough compression ratio to take full advantage of the higher octane,or knock resistance the alcohol provides, yes it will require about 25%-30% more fuel , but the power potential is certainly available if the engines built with high mechanical compression, gains of 5%-10% or more in peak torque and horse power are rather easily made if the proper components and compression ratio are used to take advantage of the alcohols different burn characteristics and potential.
the problem is that most engines are not exclusively designed to run ethanol.
any engine designed to use both race octane gas and alcohol interchangeably is not designed to maximize the alcohol characteristics,

http://garage.grumpysperformance.co...octane-for-c...



http://garage.grumpysperformance.co...ne-running-a...

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


Edited by grumpyvette on 04-02-19 07:03 AM. Reason for edit: No reason given.
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