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Old 03-16-2015, 02:14 AM   #361
cdrazic93
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Quote:
Originally Posted by bfrank1972 View Post
When you say 'a percent specific to the car', it sounds to me like you're saying car X has a 15% loss over the rpm range, car Y has 10% loss over the rpm range.

I think what these articles are saying - car X might have 20% loss at 2000 rpm, 15% loss at 4000 rpm, and 12% loss at 6000 rpm (don't take me literally on any of these numbers, just pulling out of the air for example).
Each design of the engine, transmission, differential all have different efficencies. I can bet you a DCT is more efficient then a 6 spd. And a torsen is more efficient than another kind. Also depends on the driveshaft the material used, the lubricant reccomended. Everything.

An EVO 8 will be less efficient than a Miata. A Focus ST might be more efficient than a miata.

All comes down to part design, lubricant used, and number of parts.
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