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Old 08-24-2000, 09:09 PM
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dakota dakota is offline
Moof !
Join Date: Jul 2000
Location: Seattle WA USA
Posts: 469
Often it is the engine compression ratio that will provide one of the biggest differences. Higher compression, given all other things being equal, yields greater bang in the combustion chamber. Of course, a multitude of other factors, eg, cam timing, lift, and duration, ignition strength and duration, fuel metering, air flow, supercharging, turbocharging, etc, etc, contribute to the total "package". A change of just 1 or 2 % efficiency in several of these factors will add up.

1979 240D
1990 300E
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