KX Riders
Maintenance & Technical => KX500 Original => Topic started by: utahriding on October 18, 2009, 02:02:44 PM
-
hello everyone I'm new to this site and i am hoping someone can help.
i have recently finished rebuilding my bike, upon first start up(ran for about 10min. max) coolant was leaking from head. i pulled the cylinder and noticed some light scoring. is this normal?
(new rod, piston, rings, cylinder replated)
-
Mine doesnt look like that, so I would say NOT normal. Why did it leak coolant ? Why did it score the walls ?
John
-
cylinder needs resurfacing. thought it was ok since place that plated it didnt say anything or do it, but i guess they only replate.
as for the scoring i dont know what caused it was hoping to get answers here.
-
I don't know if I would call that scoring. Looks to be very light stratches from dirt/debris. Give us more details about why the engine was rebuilt and what was rebuilt in the engine. I have seen that before and in some causes it's due to the cylinder not being cleaned before install. Once you get a fresh replate cylinder from a vendor always washer the cylinder in warm soapy water and use a brush to brush the cylinder to ensure you get all the grit out of the cross hatch.
-
repairs started as oil leak, and grew to full rebuild(all new lower end bearings, crank rebuilt with new wiesco rod, cylinder replated , new wiesco piston. didn't wash cylinder, figured it was ready to go when i got it back. should it be honed again before reinstalling? should i get new rings? do you think any debris got washed into the lower end , and should it be cleaned out?
-
problem solved. coolant leaking into cylinder washing walls causing dry condition.
cylinder , head resurfaced , cylinder honed , new rings , new gaskets. TIME TO RIDE.
thanks for the help guys.
-
aceton will get most of the dirt out of the replate.