I'd say no, no and no to all your questions.
Chain looks f'd up, looks like they're wider because it's missing seals.
Who knows what the PO did to that thing looks in bad shape for only 8500 miles?
I personally would replace all. Sprockets and chain.
You can probably still use for a while, but I'd replace all.
Could this some kind of mix mess up conversion with like 525 sprockets with 520 chain or something?
Just have not seen seals disintegrated like that at 8,500 miles.
Width between inner plates--
That might cause something like that? Spreading the links a little and destroying the seals?
Last edited by Bottoms-Up; 11-28-2017 at 06:10 PM.