250-500cc 2000 wr 250 pic heavy

got a wr250 after going through it found some problems, piston, cylinder, bearings on ex.valves i can clean cylinder, new pistons,gaskets
going through bike any tips or suggestions are welcome

piston skirt really worn...scored.

clean up cyl with scotch brite.

weird, the piston shows no carbon on top....did you clean it off?

6 spd motor right?

R Little

worn and cracked--inside of skirt has crack all the way up
has some carbon on piston top. i did NOT clean it --head clean too?????
its a factory piston as best as i can tell and engine never been apart
found pinch o-ring on cooling port on ex.valve cover and massive drool "oil" out of left side cover real watery

pic of top of piston

I think that some coolant was leaking out of anti freeze port on front ex.cover and leaking in to ex valve gear Assembly on left side and some got into piston and cylinder

i only rode bike once for about 20 min after i got it then went into disassemble mode for winter and found all this

want/need list

2 ex.valve bearings
piston,rings & gaskets
speedo digital
2 17" rims & hubs with street tires ---keep my stock rims mounted with offroad
new black seat cover
new silicon hoses blue?