Since an inline six is inherently balanced, there isn't the torsional twist and harmonics to deal with that a V8 experiences. Try spinning a V8 crankshaft in a balance machine without bob weights sometime- - - -it tries to jump out of the machine.
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!