Two Stroke Motocross Forum > Technical
Sometimes I can't believe the stupid things people do...
eprovenzano:
A friend of my son asked is I could repair his cylinder (2001 KTM 250SX).. Someone forgot to install the 2nd circ clip and the piston pin did a great job of machining a groove into the cylinder wall.
He's purchased a new sleeve from LA sleeve and new wiesco piston. This repair is way beyond my backyard garage expertise so I've contacted a local machinist I trust and he will handle the repairs... I can't believe just how perfectly the grove was machined without destroying a port... It looks like its supposed to be there... :D
I'll post pics of the repaired cylinder when after its fixed .
_X_:
wow! thats unreal. seeing how I have suffered two crank failures, I can feel for this guy lol.
shane12:
i had an engine rebuilt , they didn't torque the front barrel bolts down 2nd ride it sucked air leaned out and seized :-{{ i was not impressed, lucky i caught it fast got away with only and new piston and rings
Terry Preston:
If the circlips are lined up wrong they may vibrate out, not that this is the case here though there is no apparent circuit gouging.
eprovenzano:
The cylinder has been repaired... (Sorry forgot to take pics) but it's perfect... The owner of the bike went over the cylinder and couldn't find one issue to complain about.. ;) He decided to polish the ports... I asked why??? you don't ever use the full power now... to which he asked me why I ride a 380?? Simple... I like to dig ditches and roost you and everyone behind me with boulders, trees etc... The 380 is not a high strung beast... It's a very docile animal, until you unleash the beast... An 01 KTM 250SX is a high horse power high strung beast, and you need more... OK... have at it... :o
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