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Nasty gouges on cams/rocker arms
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Nasty gouges on cams/rocker arms - December 16, 2012, 05:58 PM

I was going to pull the rocker arms out of the concours motor for someone and found some significant scratches on the cam lobes and rocker arms. So, I'm kind of glad no one bought the whole bike or motor...

Anyway, I didn't actually ride the bike very much (<10k miles) and it was supposed to have had a valve check when I bought it (I guess I'm a sucker). I'm wondering what the likely cause of all the damage is and just how bad does it look. The pic below is what all the intake bits look like and 1 out of 4 of the exhaust. Any opinions?

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December 16, 2012, 06:19 PM

The Concours motors were known for their crappy cam hardening. Pitting and flaking is pretty common complaint on the COG forum. Some get lucky, others not so much. Mine looked ok still the last time I checked but that was about 10,000 miles ago.

I'd suspect that the cams were the souce of the wear and tear. But then again maybe you took it off roading too many times and it injested some dirt.


There's bold riders and old riders, but damn few bold old riders.
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December 16, 2012, 06:26 PM

Ah, so known issue. That makes me feel less stupid.

Heh, while I never had the concours off road I actually did have my superhawk. I did some creek crossings and pretty tight switchbacks on forest roads in VA on that bike.
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December 16, 2012, 06:35 PM

Oddly enough my Concours has probably seem more dirt (and creek crossings) than my KTM.


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December 16, 2012, 06:39 PM

You've got some nice, non-technical, dirt/forest roads out your way. My next dirt bike may actually be street legal (husky te310?) or converted (some kind of 2t?). Not for real highways, of course.
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