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Old 12-26-2012, 11:05 AM   #1746
kellygnsd
Scooby Guru
 
Member#: 32669
Join Date: Feb 2003
Chapter/Region: SCIC
Location: Rancho C
Vehicle:
2007 2.34LR, EFR7670
LINK G4 hybrid STi

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Quote:
Originally Posted by induction addiction View Post
Correct me if i'm wrong, but the main reason for spool/high RPM on a long rod motor is that the piston will sit at top dead center longer which equals more explosion and less load/angle on the engine bearing making them safer and more efficient at high RPMs.
I'd PM 3MI/homeadeWRX or maxwell power on this. There are many things that go into it that I don't fully understand but if my understanding is correct the piston acceleration from TDC to BDC is different as is the dwell time at each extreme, and less piston side loading which equals less wear.
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