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Old 01-26-2011, 12:40 AM   #12 (permalink)
stovie
EcoModding Apprentice
 
Join Date: Oct 2010
Location: Ivins UT
Posts: 213

the green machine :P - '97 Jeep Grand Cherokee ZJ
90 day: 20.92 mpg (US)

Thee s10 - '00 Chevy S10
90 day: 24.27 mpg (US)

Freedom - '05 Kawasaki Ninja 250EX
90 day: 75.55 mpg (US)
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Quote:
Originally Posted by comptiger5000 View Post
You're better off keeping the higher temp t-stat and cooler fuel to avoid vapor lock. Try warming the fuel, but not enough to vapor lock it.

You're missing the point here. Dropping the engine temp only increases the ping threshold a little. Hotter/cooler air and fuel have a much greater effect. Ideal for high compression is reverse cooling flow (heads first, then cylinder walls), a 180* or 195* t-stat, and cold air coming in. For FE, the same equation with warm air would be good (although not as high compression). Running the engine too cold is counter-productive, and also increases wear.
i looked at the pressure of fuel online at 140 it says it will hit 29 psi but if u have a pressurized system the fuel will stay liquid tell injection and thats all i was saying, and from what i read lower temps only increase wear if u try it in a used engine thats broke in at higher temps with lower tolerences if you build a engine for the lower temp and higher CR then it's "SUPPOSED" to work i guess

Last edited by stovie; 01-26-2011 at 01:25 AM..
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