Crankshaft harmonics?

[SSDiv6]

Originally Posted by art leong

I started running an Innovators West. I took it off because I thought I damaged it installing it. I sent it back and there was nothing wrong with it.
Now I'm running a solid metal pulley. This is an inline 4 cylinder. Quite a bit different than a V8.

Art, running a solid metal pulley is a recipe for disaster on a high RPM 4 cylinder engine, especially if you do not have counterweights and no dampening.

Here is a link with some good discussion on the subject:

http://www.eng-tips.com/viewthread.cfm?qid=107602