Topic: New to me CB550 engine

[saxamaphone]

Hi guys, I was visiting my uncle recently and he said "Hey, don't you like old Hondas?  My neighbour has an engine for you." 

It was stuck so I started tearing it down.  I'll have plenty of engine spare parts now hopefully. 

Check these cylinders.  The rusty one is the one that's stuck.  Still can't get the cylinders off yet so letting it soak a bit more.











One thing I noticed while tearing it down was that the little metal tabs on the advance unit are broken so the bolt on the crank can just turn over.  Is that reparable?  Doesn't seem like it would be unless you welded them so the advance unit is probably garbage.

Forgot to add the engine number is CB550E - 1090428 so looks like a K2.

[Duanob]

If you're attempting to rotate the motor, especially if it's seized, from the points side of the crank, DONT.

Sounds like someone else already tried that, it's a bit too late.