Hi all, I'm working through my first valve adjustment with the RC. Second owner and the original didn't have anything for records so I'm going to assume never had valves checked (12,000km). After pulling everything apart I was tight on all 4 valves by either .01 or .02mm, not a big deal. So I picked up the Wiseco shim kit and using basic math (yes, I verified each shim with calipers and then a friends set of calipers) I dropped each shim 0.05mm. Simple right? Well, after reassembly, I had only 1 valve in-spec.
Conveniently, my licensed mechanic pal showed up, and going through it he was as baffled as I was. So dropping the remaining 3 another 0.05mm, one more came into spec. Completing the disassembly/reassembly again and dropping another 0.05mm I'm still tight on my LI and RE (AFTER GETTING MY 0.05mm through both instances then dropping the corresponding shim 0.10mm - this makes no sense, I know).
So when I inevitably get back to it, I was curious if anyone else has had these mind-bending issue? Or theres something I could be glaringly messing up. The next adjustment to chase the LI and RE valves will have me having dropped 0.15mm which is a lot more than I've ever had to do for any other bikes shims.
Key point/question: the Wiseco shims do not have a taper on the edge that the OEM shims have and I'm wondering if it slightly changes where the arm sits
My mechanic pal suggested to just start at 2.10mm-2.20mm (my intake starting points were 2.50mm and exhaust both 2.60mm) and build up from there.
Any one else with similar head-smashing inducing tales? If so, how did you come to make your headway?
Thanks,
Angus
Conveniently, my licensed mechanic pal showed up, and going through it he was as baffled as I was. So dropping the remaining 3 another 0.05mm, one more came into spec. Completing the disassembly/reassembly again and dropping another 0.05mm I'm still tight on my LI and RE (AFTER GETTING MY 0.05mm through both instances then dropping the corresponding shim 0.10mm - this makes no sense, I know).
So when I inevitably get back to it, I was curious if anyone else has had these mind-bending issue? Or theres something I could be glaringly messing up. The next adjustment to chase the LI and RE valves will have me having dropped 0.15mm which is a lot more than I've ever had to do for any other bikes shims.
Key point/question: the Wiseco shims do not have a taper on the edge that the OEM shims have and I'm wondering if it slightly changes where the arm sits
My mechanic pal suggested to just start at 2.10mm-2.20mm (my intake starting points were 2.50mm and exhaust both 2.60mm) and build up from there.
Any one else with similar head-smashing inducing tales? If so, how did you come to make your headway?
Thanks,
Angus