Her is some pics of my piston that i took out of my warrior cause of some piston slap and recently smoking. Is this from excessive heat and excessive slap from a oversized bore? Would I be better off running a oil cooler? any suggestion to help me put this thing back together?

Melted ring land??



Top of piston worn down

 

yea you need to get the big bear oil cooler they like to run hot...

 

Looks like a lean scuff to me. What did the plug look like?

 

yes sir it was white which I am pretty sure means lean which also means more heat right?

 

Now I'm more sure than ever. Look at the picture in my profile. Look familiar? This is with a blower so it really cooked the piston.
Was it popping on top end?

 

Ok, It started to ping after riding it hard. I ordered a new cylinder and piston. I am also gonna re jet the card to run a lot richer. How do I rig up the big bear oil cooler on my warrior???

 

your best bet in finding out exactly how to do is go to yfm350central.com and talk to them i think they have a sticky on it to take you through the steps, or contact recon99 on this site i think he did it to his warrior he had, but its best to actually look at it that way then me telling you, but i think you bolt the cooler up near you ign. coil and then theres 2 lines that tap into your right side case if im correct.