2023 worra killpecker sand dunes Carl Weskamp memorial

[@cannonsmith7429]

Bummer ending!

[@Sled_hed20]

I also noticed this was your 2nd motor this year too. What’s causing it? Are you jetted too lean?

[@tannerblakely556x]

I got my needle in the right position and now it seems fine. I think the reason it seized this time was the crank bearing hopefully. The first time coolant slowly leaked out of the drain plug so the bearing could have been damaged from the heat and I didn’t catch it when rebuilding it.

[@panic-revv85]

@@tannerblakely556x the bottom end will rarely go out before the top of it's a heat issue. 32:1 with any premium oil and proper jetting those yz bottom end will last hundreds of hours. My boys 125 probably had over 300 hrs.

[@panic-revv85]

Dude, that's twice in a year...

[@tannerblakely556x]

I believe my crank bearing is damaged from when it overheated the first time. Hopefully the bearing just locked up.