HRC piston, cam and timing chain

3 replies to this topic
  • nakedtls

Posted April 22, 2002 - 03:21 PM


Does the cylinder have to be bored or honed out? I know it sounds like a stupid question but I don't know. Trying to get my budget together for my supermotard.

  • mr660

Posted April 22, 2002 - 06:53 PM


Depends on the size piston you order(0.030,0.040 etc.) Going 0.030 over you will have to bore the cylinder.

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  • Craig_Mitchell

Posted April 22, 2002 - 07:35 PM


I will assume ( from the title of this thread )
that you are asking about installing the HRC
piston&cam kit into an xr650r.

The answer to the question is then, no honing
or reboring is needed.

I did mine last summer.

cheers, Craig ( U.K. )

  • quickbrit2

Posted April 23, 2002 - 02:45 AM


Hey Craig, what was you final output figure. Did you ever Dyno it?


Originally posted by Craig Mitchell:

I did mine last summer.

cheers, Craig ( U.K. )

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