justin_o_guy
Ex Member
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The single thing that sticks out to me is the reporting of cam chains lasting a Long Ol Time years ago. The engine operating temp hasnt changed. The way boys play with things hasnt changed.Is it possible the reports of long lasting cam chains were wrong? What about the point in one of the posts, regarding the wear of the gear & chain that were studied. The cam gear was only half worn, as was the chain. BUT, the tensioner was at the limit. So, what do we look at? The guides? The fact that the tensioner is at 8 mm or more when the new chain is installed? I Donut gno, but The life expectancy of the cam chain is approaching "Snowball in Hell" average life span. I really want to be gruntled with my bike, but, I could get DISgruntled. ( I know, I know Gruntled isnt a word, but it Should be, if I can get DISgruntled, why cant I be gruntled? HUHH? I am getting disgruntled NOW!!) WEll, now I am just being silly.
I think the most direct & cost effective mod is extending the tensioner where it attaches to the lower end of the guide. Making sure there is sufficient bow in the rear guide to keep the ratchet from grabbing a new tooth & creating a torture test for the chain would be good. The cam journals are sitting there , raw aluminum, as far from the low pressure oil pump as is possible, so, IF there is a big load on that chain, I would expect those surfaces to be worn if not galled & ruined. Since we arent seeing destruction in the head, I am guessing the tension on the chain isnt too horrible. I do want to try the cryo stuff on the next run. It will get new guides & chain & a tensioner mod.
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