docc Posted February 9, 2018 Author Share Posted February 9, 2018 I had a Honda rocker flake it's "hardness coating" (whatever that would be), which introduced an annoying tick'tick after warm up. These V11 rockers simply appear worn, not damaged or flaked. My thinking is, if i had LuckyPhil's rockers, adjusting my valves 0.006"/0.008" nets an actual lash of 0.009"/0.011. (Almost "Race Spec"). But, his rockers had only 26,0000 miles/ 42.000 km and I'm pushing four times that. Does that translate to four times the wear? Perhaps not with so many other factors at play. The antipodal Coriolis Effect notwithstanding. I see that new V11 rockers are $165US each (if available). Makes the Baisley upgrade competitive if not alluring on its own. Link to comment Share on other sites More sharing options...
Chuck Posted February 9, 2018 Share Posted February 9, 2018 You got me thinking about this, now, Docc. Thanks a lot, pal. I *have* seen a respected Guzzi mechanic reface rockers by hand. That would take some skill.. doing a little research I found a home made fixture to do them on a belt sander. Before getting too carried away, though, I wouldn't be surprised that a good automotive machine shop will have an attachment for their valve grinding machine to do rocker tips. Shouldn't cost much. Link to comment Share on other sites More sharing options...
docc Posted February 9, 2018 Author Share Posted February 9, 2018 Gotta love a guy that goes straight from think to act with nothing between. -> So, concerns for cutting below a surface hardness at some point? Link to comment Share on other sites More sharing options...
Tom M Posted February 9, 2018 Share Posted February 9, 2018 Here's a video that shows how one auto machine shop refaces rocker tips. He uses a fixture similar to what Chuck posted, but he grinds them on a grinding wheel instead of a sanding belt. Unlike the sanding belt I think that would keep the face parallel to the rocker shaft. 1 Link to comment Share on other sites More sharing options...
LowRyter Posted February 9, 2018 Share Posted February 9, 2018 My goodness, I wondered how far this was going to go. Man, it's went. Docc, How many lost horsepowers do you think has escaped from your 100k mile motor's rockers? I was thinking that compression tests after every fill up will complete a heck of a graph. Link to comment Share on other sites More sharing options...
stewgnu Posted February 9, 2018 Share Posted February 9, 2018 Is it time for docc to pull his rockers to see what 100,000 good ol’ american miles has wrought?? Link to comment Share on other sites More sharing options...
docc Posted February 9, 2018 Author Share Posted February 9, 2018 Is it time for docc to pull his rockers to see what 100,000 good ol’ american miles has wrought?? I knew it would come to this. I knew, I knew . . . >sigh 2 Link to comment Share on other sites More sharing options...
LowRyter Posted February 9, 2018 Share Posted February 9, 2018 How far are you guys going with this? 1 Link to comment Share on other sites More sharing options...
footgoose Posted February 9, 2018 Share Posted February 9, 2018 Here's a video that shows how one auto machine shop refaces rocker tips. He uses a fixture similar to what Chuck posted, but he grinds them on a grinding wheel instead of a sanding belt. Unlike the sanding belt I think that would keep the face parallel to the rocker shaft. this method looks reasonable, quick, and maybe not costly.... speaking as a proud non-tech, of course. Link to comment Share on other sites More sharing options...
stewgnu Posted February 9, 2018 Share Posted February 9, 2018 So.. grinding material off the arms doesn’t affect the system tolerences at all? I ask because i do not know. Link to comment Share on other sites More sharing options...
stewgnu Posted February 9, 2018 Share Posted February 9, 2018 @docc ha! Link to comment Share on other sites More sharing options...
Lucky Phil Posted February 10, 2018 Share Posted February 10, 2018 So.. grinding material off the arms doesn’t affect the system tolerences at all? I ask because i do not know. Not enough to worry about. You are only grinding back to a knats over what its worn to anyway. Personally the Baisley roller conversion passes the "elegance" test for mine. Its what you would have done in the first place if you weren't constrained by production costs. Like gear driven cams, what engineers would do if "those that loom from the dismal science" (economists) didnt exist:) Ciao Link to comment Share on other sites More sharing options...
andy york Posted February 11, 2018 Share Posted February 11, 2018 maybe i will pull mine out and have a look see. rode hard and put up wet many times. but my my my she loves it Link to comment Share on other sites More sharing options...
docc Posted February 11, 2018 Author Share Posted February 11, 2018 Coming up on that magical 200,000 km mark! We'll celebrate! Break out the Special Tool Fluid! Link to comment Share on other sites More sharing options...
footgoose Posted February 11, 2018 Share Posted February 11, 2018 notable quote if memory serves, overheard @ a recent SR evening conversation "don't ask me, I drank from the jar" 1 Link to comment Share on other sites More sharing options...
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