Two Stroke Motocross Forum > Open Forum
My next project
_X_:
easily ads 10 hp! i'd keep those.
cnrcpla:
I wont lie, they look good for the tape they were made with
cnrcpla:
Ok, calling the engine guru's (TMKIWI I believe you were labeled the RM guru). I need help getting the seized piston out of the bore. I got the cylinder loose but the piston refuses to budge. The bore is fine judging by what I can see This may have been a SWEET pick up. I couldn't get any decent shots with a cam, but the bore is perfectly smooth
TMKIWI:
The bore may look smooth ( what you can see ) but could be worse where the piston sits.
Are you intending to rebuild the bottom end ?.
Is the piston stuck solid.?
If so you can drill a ring around the piston about 15mm in from the outer edge.
Drill a series of 10mm holes 1mm apart and once all holes are drilled use the drill bit to "connect" the holes.
(Move the drill side to side).
Give the center of the piston a decent hit with a hammer and the piston should seperate.
Remove the cylinder and then you can press out the remainder of the piston with a hydraulic press.
( Make a die the correct size to press on the left over piston ).
Rebuild.
2T Institute:
Just fill the cylinder with diesel overnight(plug the exhaust with a potato) come back in the morning and try to mover with kick start after removing the diesel
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