I’m starting to get parts ready for my 140’s engine rebuild. A couple of questions:
there is a bit of wear on the eccentric shaft one of the timing sprockets runs on. The sprocket has what looks like a lead-indium bush in it that runs on the eccentric. There’s a little bit of movement - is there any way to repair/replace the eccentric? I haven’t found anyone selling them yet. If I change the bush, does it need reaming, or is the fit reckoned OK as fitted?
my engine has the simple curved metal timing chain tensioner. Is it worth the expense and work of converting to the hydraulic type? I guess the original type must work, but I’m more used to the hydraulic ones. That said, I’m in no rush to change if the original is well up to the job.
what parts should be routinely replaced on the timing mechanism as a whole as part of a restoration?