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Old September 18th, 2019, 11:56 PM   #1
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Joined: Jul 2013
From: Tujunga
Posts: 96

I Ride: Hyperstrada White
Seized vertical intake cam.

Very strange failure on my hyper. It's got 58000 miles and I've had it since New. Always changed oil at 4k or less always at proper level. The cam ground and seized in its guide and ended up ripping the belt apart. Somehow it seized in the right spot and didn't bend valves.my question is why might this have happened? It's very odd that only one of the journal locations would starve of oil if it is in fact oil starvation. Any ideas guys? Really want to fix this correctly.
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Seized vertical intake cam.-img_20190913_214856937.jpg   Seized vertical intake cam.-img_20190913_214904601.jpg   Seized vertical intake cam.-img_20190913_214849119.jpg   Seized vertical intake cam.-img_20190913_190514361.jpg  
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Old September 19th, 2019, 02:41 PM   #2
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I'm no engineer or mechanic, but could over-tightened belts have caused this? The damage seems to be near the outboard edge of the journal.
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Old September 19th, 2019, 06:24 PM   #3
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Quote:
Originally Posted by Relax View Post
I'm no engineer or mechanic, but could over-tightened belts have caused this? The damage seems to be near the outboard edge of the journal.
Also this

Did you just have it serviced?
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Old September 19th, 2019, 06:47 PM   #4
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It was serviced by me about 2000 miles prior. I don't think the belts were too tight. If anything they might have been looser than spec. I'll keep it a thought though. I've done 4 valve adjustments and belt changes and never saw any damage showing up between then. To be honest I let someone rwnt my bike through an app for a day and it took a shit that same day he had it. I don't see what he could of done to cause this though. So not really casting blame on him.
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Old September 19th, 2019, 08:37 PM   #5
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oh dang. coulda been anything, like long wheelies?
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