July 11th, 2020, 11:31 AM
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#13 |
Senior Member
Joined: Nov 2001 From: Ely, England Posts: 16,336 Thanks: 556 I Ride: Husaberg FE501e 2003 |
I nearly said; "i wonder if it is a 550?" but then just left it as; "there is a possibility this engine is a strange one, as said above, the serial numbers don't seem right."
Take off 0.8mm nothing over 0.3mm should be over the top of the crankcases.
the piston will be down 1mm in the middle. hardly worth counting. its 5cc so a drop of 0.3 to 1 perhaps? but with a proper squish you'll probably gain performance.
Taffy
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