I wanted to know exactly what I would need to order before I placed any orders, so I went the route of disassembly, order, reassemble. I knew before I started to double check EVERYTHING, so I did. When it came time for a compression reading things got scary. C1: 75lbs C2: 70lbs C3: 70lbs C4: 75lbs.
At this point I was mystified. This bike ran like a champ last season (to Sturgis and back) with no issue. So after a bad compression test I poured a little oil into the jugs. I got great readings across all 4 cylinders. So I was prepared for a new set of rings. I took the top end apart and went to measure the cylinders and found my bore gauge was just a tad too big (3"-4") So I turned to the old repair manual and saw that if you can insert a .06mm feeler into the cylinder without the rings you need to break out your wallet. I was able to get a feeler gauge >.1mm into the jugs. Reading on I saw that you can/should insert the rings into the jugs and if you get a reading > .25in in between you need to renew rings. well I could not. I looked for any identifiers on the rings to see if they are oversized. Nothing. looked at the jugs for machine marks. Nothing. I have no idea where my compression went. I am going to finish this post and this cup of coffee and start on the head too see if i got any leaks there. But if I do not then where do I go next.
Thank you all for letting me waste some of your time and brain power.
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