New Project... Barn fresh 04 RM 125.. My son's girlfriend mentioned to him I know where there's a bike that's been sitting for years (6 years to be exact). Ex boyfriend's... she called his step mother, it doesn't run... she said please come get it out of the barn, please, you can have it... FREE...
Adam picks it up, said the tires were 3 inches down in the dirt, wheels didn't want to turn. Was told by the ex that it has a full aftermarket exhaust, bored 40 over.... Adam didn't care, just wanted to collect the bikes and its parts and get out of there...
So we gave it a much needed bath... found its missing a few small things, but its pretty complete. As usual I don't take believe what previous owners say they've done to their bikes.. After a quick inspection I see it has the stock exhaust... so I know the PO is full of shit... Before wasting my time I check for spark, yep, got lots of spark. So with that, let the tear down begin (the other RM in the pic below is his buddies, just happens to be a 04 RM 125 too)
I drain the rads, it had engine ice in it... nice. Pull the head, so far good, measures out to a stock bore. I feel a slight scratch in the bore... hmmm I may be able to salvage this with just a top end refresh. I pull the cylinder... somethings not right. It takes me a while but then it hits me... someone resleeved the cylinder but didn't line it up... it's off 3/8 th's of an inch. How that hell do you do that... the ports are partially closed, including the power valve. It was blocked from being able to open...
I'm dumbfounded as to how stupid some backyard mechanics are... When I 1st saw the sleeve didn't line up with the casting, I assumed the sleeve or casting was broke... nope.... upon closer inspection, it's just bad work... The crank is tight, no play in the big end bearing, and no play on the clutch or flywheel side...
So we'll have the sleeve replaced and of course put in a new top end. The bottom end will get washed out with clean diesel fuel. It needs a new chain and sprockets, levers, grips, and the rear fender stitched back together . Clutch plates are serviceable for now. It will make a fun track bike.