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Old 13-01-2023, 05:08 PM   #15
Mr Gazza
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Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,819
It's generally accepted that the vertical cylinder runs a bit hotter than the horizontal as it doesn't benefit from quite so much cooling air.
So the clearance is a bit more to allow for a bit more expansion.
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