KDXRIDER.NET

Hi guys
I had my top end rebuilt probably 35-40 hours ago by my Kawi dealer. At the time I didnt know much about working on bikes, but thought i'd just dig in during the lockdown.

Below are some videos of my piston, cylinder and conrod - would be keen to see your thoughts. I think the cylinder looks like it could be due for a replate.

I would also appreciate some advice on my conrod - I tried checking for up/down movement, couldnt really feel anything, but my crank does move a wee bit (is that normal?), and there is some side to side play. I took the flywheel cover off and tried to move that up / down and side to side, no movement, so that was a good sign.

as far as it running, i have had no issues.

EDIT: excuse the breathing. i dont know why it sounds so weird on the video haha.

- conrod

- piston

- cylinder

Cheers

Piston and cylinder look fine. The rod play is fine too. The general rule is that if there’s no up and down play, your good to go, and side to side play is ok, which is true. However you can tell how much its worn by how much it “rotates” side to side, or how much of an angle the rod creates, as opposed to sliding side to side. So what you have is a used crankshaft with plenty of life left in it. Also, 2 strokes get faster as they age

Agreed. Everything looks good to me also.

Thanks all.

I also had taken my clutch apart but then put it back together. I was trying to move crankshaft by hand and it wasnt moving, so i pushed harder - it eventually went down with a bit of a clunk then wouldnt come back up.

i checked clutch and the basket wasn't properly seated with he hub. it now moves fine.

would i have damaged anything?

Get some feeler gauges to check side play.