tooter's manifold adventure...

[Golddeenoh]

a popular 4 cylinder factory balancing technique is to use balance shafts the are driven by the timing chain and turn in the opposite direction of the crank shaft. I'am not aware of any newer 4 cylinder engine that require external crank shaft dampening.

I'm with Why, there is no dampener pulleys on new age 4 cylinder engines.

[tooter]

Originally Posted by Golddeenoh

a popular 4 cylinder factory balancing technique is to use balance shafts the are driven by the timing chain and turn in the opposite direction of the crank shaft. I'am not aware of any newer 4 cylinder engine that require external crank shaft dampening.

I'm with Why, there is no dampener pulleys on new age 4 cylinder engines.

Tell you the truth, I've never looked closely at mine to see whether or not it had any rubber in it. I believe that my 4 stroke single cylinder motorcycle has a counter rotating balancing shaft because it runs pretty smooth for a one lunger that only fires once every other rotation.

Now you guys got me all curious, so I took an inspection mirror and actually looked at my pulley. It's got a rubber dampening strip in it. Maybe the 2012's are third gen that they have them now. I also found a pic of one like mine. It looks exactly like this...