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Author Topic: Cam timing: off by one tooth cause piston-valve contact?  (Read 3798 times)

Offline omgang

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Cam timing: off by one tooth cause piston-valve contact?
« on: February 10, 2016, 10:54:35 AM »
I had a thread open a few months ago regarding a loud top-end noise after doing a valve lash adjustment.  I'm ready to get back into figuring this out and have purchased a degree wheel so I can check cam timing before tearing everything apart for the third time.  Question, if I installed the cams and had the one tooth off will that have caused piston to valve contact?  It's a '99 with Yosh stage 1 cams.
Thanks,
OM Gang
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Offline Ghost-Geezer

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Re: Cam timing: off by one tooth cause piston-valve contact?
« Reply #1 on: February 10, 2016, 11:37:42 AM »
Or valve to valve contact.  I did the same thing once on my ZX-9r.  Bike ran but would not rev and was "noisy" in the top end.  I corrected the fault, (one tooth off on the intake side), and bike ran fine after that.  Difference is, a 99 ZX-9r is not a Busa so I cannot tell you how much one tooth would hurt you on the Busa.  I snuck by. 
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