The lighter weight pistons put a lot less stress on the Babbit bearings, and the engine accelerates quicker since those heavy iron pistons don't have to change directions several times a second. At 2000 RPM, they're starting and stopping 33 times a second!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!