Hi Guys,
I'm rebuilding my sons KX85 again after only 53 hours on Bottom end. The bottom end does not seem to be getting enough oil. Right now the rod has lots of up and down vertical play. It looks like it got hot on one side of Crank.
The bearings and seals are still good.
Couple of questions:
1. Does this cylinder look okay to reuse? It has very small blemishes, but check out pictures and let me know?
2. Will increasing the fuel jet size a couple of digits help get more oil down into the crank area? Or should i use 32:1 mix. I have been using Maxima and Yamalube at 36 to 40:1. We haven't fouled a plug in a real long time.
All of our 2 stroke bikes run great. With no fouled plugs, and no rebuilds in a long time. This KX has been completely rebuilt 3x in the past couple of years. All lower and upper ends plus all new seals each time.
Thanks for your time and responses.