Yes exactly, if you every get the chance to take the head off your bike to change the gasket or whatever, have a look at the piston skirt ..RobB wrote:Ive always thought another reason to warm up is for most of the components to expand, and for the clearances to settle. But as Gubbs said a few minutes is fine, just dont go thrashing it and wait for it to get to operating temp. Personally i try not to use the choke, perhaps a sign its runnin slightly rich as the 7R very rarely needs it.
If its scuffed lightly or seriously its an indication you aren't allowing enough time for the bike to warm before thrashing it ..
Here's a good example from one of my bikes:
Here's a link to a couple of sites I found useful for diagnosing such stuff:
http://www.automotiverebuilder.com/ar/eb20726.htm
http://www.sacskyranch.com/eng151.htm
the bike looks and sounds very nice