rc46 wrote:

By the way shaving 1.5mm will also alter the transfer ports as well, making the bike perform diffrently. Wont it !!!

This depends on where the 1.5mm is removed from. If it's taken off the top, and thicker base gaslets used to make up for it, then yes, this will in turn basically move the ports up on the piston, altering their timing.

Now if the 1.5mm is removed from the bottom, and thicker base gaslets used to make up for it, then the ports are for the most part in the same place.

Of course Jo (I think) mentioned the material is skimmed off the top of the barrel, so yes, this would adjust the ports location.

Now there is an option for this to get some VHM heads with some blank inserts, and have new heads cut to allow for the skimmed barrels. Of course I would rather have the deck height be standard without needing to do any of this.

Thanks,
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Charles Gallant