Join Date: Jun 2011
Location: Victoriaville, Qc
Easiest way and first thing to do is to check the oil filter, brass usually comes from the crank, aluminium will come from the cylinder and piston, if no shavings well maybe the engine has no damage and back to guessing.
First I would take the engine off, first timer it's a 2-3 hours job, I get mine on the desk in 30 minutes with an air wrench. If the swingarm bolt get stuck, well your in deep lol.
Then sit it on a tire and start removing the top end, bag and label camshaft, bolts and stuff, pull the cylinder since you need to do it anyway. Once there you will have a hand on the crankshaftby pulling the rod up and down if you are able to feel any slack, not sideways but pure up and down it cooked. Then you need to pull the crank up and down to check the main bearings, there should be only a very slight slack and very little side to side movement, if you hear clunks while moving it, no good, if the pin end show any signs of overheating it's cooked. Best is to get someone that build engines to get a look at it
2008 TRX 450ER XC racing
FMSQ # 281