Dirtrider
New Member
Hi I know there has been several threads regarding valve/tappet adjustment but does anybody actually know the clearance dimensions?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
Hi I know there has been several threads regarding valve/tappet adjustment but does anybody actually know the clearance dimensions?
VALVE CLEARANCE:
IN 0.17 mm (0.007 in)
EX 0.28 mm (0.011 in)
Pretty high clearances for a short valve train. I would have expected .006" and .008". Explains the "ticky" valves.
"Tappy is happy" as owners of older Concours' say (we have screw-adjust rockers, too, albeit with tighter clearances).
I'm impressed that the NC has screw adjust instead of shims - another advantage of the low RPM design and another reason I'm looking at this bike with interest.
Aside from a tiny amount of oil that may drip off the valve cover upon removal there is no oil loss when checking or adjusting the valves.
I only had one intake valve (first valve, first cylinder) that was in spec. All the others were a little tight. Especially on the exhaust side. However, I'm not sure I did the adjustments the proper way (hence my last post) so I will will do them again soon. They seem a little "ticky-er" than before but performance hasn't changed.
What's the worse thing that can happen from poorly adjusted valves?
I'm not 100% sure the cam rod was in the right position for each side.
Also, my feeler gauge had two different settings on each feeler (ex.: .008 and .011, next was .009 and .012). I assumed there was a gradient to the feeler and it was noting the skinnier and thicker side of the feeler.
I used a "Go-No-Go" type feeler...whatever that means...