I own a 2001 rc51. This summer I accelerated from a stop light and broke my chain. The chain whipped around and ripped my clutch cover off my bike. Where the clutch cover attaches to the crankcase was also sheared off, leaving me with a broken crank case. So I started pricing out how expensive the crank case would be. I need an upper and lower. And they appear to be around $1,200. And I would need to pay a mechanic to rebuild the motor. My question is should I replace the damn crankcase or find and buy a used motor? I could most likley do a motor swap on my own. My current motor has 16K. Also can I swap a 2002 or 03 motor on a 2001 bike?

thanks
Infantry600

Just find a used motor and swap it.

Yep, $1200 for a case set.

Not having any pics to view damage extent, would it be feasible to take the cases to a machine shop to heliarc material to the cases and machine it down, then tap holes?

But I agree you might find a used engine one the various forums where a bike is being parted out.

Get a new motor bro. You can usually find them on ebay cheap

What do motors go for? With or without wire harness

how bads the crankcase? i've welded many cases that guys gave up on because of no experience.

i agree the first thing i would do is try to repair it!