TOPIC:

I need some help with a connecting rod for a 1981 KZ650 H1 (CSR)

My engine sounds like a small diesel. I traced the problem back to the #2 Connecting rod top. The piston would actually tip from side to side. I am not sure which rod it is: H, J, I.

Anyone know what rod it is?, (I will look as soon as I can)

Anyone got a spare?

Please PM

HM

You sure it's not just the wrist pin? Mike the wrist pin to see if it's worn out and causing the problem.
If you don't have a micrometer take the wrist pin and try it on another rod, if it rocks on the other rod then it's the wrist pin.

Post edited by: steell, at: 2006/05/12 16:26

The pistons and pins were new, about 1100 miles on them now, and I tried as you suggested, and it is def. the rod top. Just wanted to get the replacement before I pulled the motor off the frame and split the case. (Assuming you cannot get to the rod bolts by removing the oil pan, and stuff in the way)

I cannot find any marks identifying the rod. there is a 402s but not much more, anyone know WHERE on the rod the letter that identifies it is located?

Have you checked the FileBase? It's under "KZ information" at the top. I believe Murphyau posted an excellent article on a 650 rebuild that will probably cover it.