Piston ?. Found my smoking problem

[bronc3buster842001]

Tore my motor back apart. Looks like the piston is melted where the wrist pins goes. Bike is basically stock. has a uni filter in the stock airbox. Stock exhaust with the baffle taken out. Seemed to run great. Piston looks to be a Wiseco .020 over.

Whats a good piston to use without breaking the bank. Seems I havent had any luck with Wiseco

 

[beastlywarrior228]

Go for a je off ebay i got mine with rings for 120

 

[bronc3buster842001]

any idea on what caused it to melt around the wrist pin.

 

[bronc3buster842001]

Only je pistons on ebay are stock bore or 2mm over. Trying to stay around a .020 or .040 over

 

[duneracerweston]

grab another wiseco go .040 over, id check and see if your crank is good or if your oiling system is working, looks like it wasn't getting oil

 

[bronc3buster842001]

When i pulled the head off it had plenty of oil up there.

 

['00 WO-YA!]

That don't mean it was enough bro, that Bitch was dry, look at the scoring on the side of the piston.

 

[duneracerweston]

you need to check and make sure the crank is still tight if not then then something in the oil system died and got the crank and piston.

 

[bronc3buster842001]

The crank seems tight still.

I know the shifter shaft seal was leaking a lit bit of oil. also think it was leaking around the stater. I ran it kinda hard over the weekend. It was smoking pretty bad anyway. So I knew it at least needed rings.