Well, it's been a while since I've updated this thread, but that's mostly because she's been treating me very well. I spruced her up a bit with a nice cherry red tank from forum member Tango911, and some shiny bits here and there. I also picked up one of the MotoGPwerks pipes for later down the line. I wanted to mock it up to get an idea of how it would look, and if I'd be able to keep my center stand. Well, after mocking it up I stripped the threads inside the head for the #4 exhaust stud...And that leads me to where I am now..rebuilding a spare head to replace a 95% perfect one
My neighbor may be able to help me re tap the hole, or insert a helicoil, so all may not be lost. Nevertheless, I'll be rebuilding this spare 550 motor for either this bike, or another frame I'm getting in trade for a fender.
Here's how she looks right now
Here's where I started, sorry for the crappy iphone pictures. I refuse to touch my DSLR with greasy hands.
There was definitely scoring on the rockers, the cam bearings seem okay though...I'll take good pics with the DSLR for the next post.
When I was cranking the motor on the stator side, the insides of the #2 spark plugs popped out. I think I can use the diode to coax it out later on after a thorough soaking.
At this point I had to stop because the head bolts are pretty crusty, and I didn't want to have a go until they soaked overnight.
I loosened the cam chain tensioner mount bolt at the top of the head like the manual says, but it doesn't seem to mention the adjuster bolt. Can I loosen the lock nut and let the adjuster nut go counterclockwise to release that pressure?
More to come tomorrow after I have a crack at those bolts.