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Old 04-27-2017, 09:16 PM   #28
SpudRider   SpudRider is offline
 
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Join Date: Jul 2008
Location: Idaho
Posts: 25,054
Quote:
Originally Posted by jbfla View Post
Spud,

Do you know what caused the scoring of the cam lobe in the photo?

jb
No, I do not know what caused the scoring. The roller rocker was in good condition. The associated rocker is on the right side in this photograph; it is the exhaust lobe rocker.

I did not notice any valve recession of the exhaust valves. Perhaps it required 16,000 miles for my exhaust valve clearances to settle because of the wear on the camshaft exhaust lobe.

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Spud

"Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain

2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220

Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894


 
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