denisducati750
650 Custom Chop
I'm putting the top end back together in my first engine rebuild attempt. Ordered new cam chain but it is one link too short. The engine is a '74 XS650 from the US and has a 447 on the block. I understand that there are two cam chains for this model depending on where in the world the bike was headed - the chains have a different 'pitch'. The key is apparently whether the bike is a '447' type. The old chain has DID219FT on it and the new chain has FTS219 on it. The supplier reckons the new chain is the right chain for the job, but even after removing one of the cam bearings to get the chain on the top sprocket, there is no way I can get the bearing back on and the the chain in place - just far too tight. The supplier said that if this didn't work then I had another problem - I've counted the sprocket teeth on the top sprocket and there are 36 which is I understand is correct. Have inspected the cam chain on the bottom sprocket through oil cover removal, and it's not sitting on a tooth or kinked. Any suggestions welcome. thanks, Slug.