Several (
) years ago me and my mate were in the pits at Silverstone as guests of Dino Karts in the year that they won the world Superkart championships. Not only were their karts the pick of the crop but their 250 Rotax twin motors were also the fastest.
My mate (himself more than a bit of a wizard with 2 strokes at Fowlers) said to me to take a look inside one of their motors as it had the barrels off. We were amazed by how rough looking it was inside! Everything was matched/shaped but no area had any sign of smoothness, no nice polished surfaces. We did chat with one of their tuners and he explained that you can get a faster, more pressured charge if you just shape correctly but with no polishing.
Mike
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I don't mind dying...I just don't want to be there when it happens!