Engines.

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harryhcs

Race Dog
Joined
Sep 4, 2009
Messages
567
Reaction score
0
Bike
Kawasaki KLR 650
Can someone please explain to me why would two 650 engines for example be completely different in performance ?What makes an engine slower or faster? For instance a 640 LC engine and a KLR engine? Just a thought I had on my bike yesterday going back home..

 
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