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Perry, Did the inter-changeable pop-up pistons also have cams? Any other goodies spec from Factory?
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Super Sport differences - all the top end stuff was different, bigger carb, intake manifold, intake valves, housings and rockers. Different cylinders, exhaust valves and tappets. Different flywheels, connecting rods and pistons. Different cam. Different magneto. Even different handlebar spirals (presumably less twist to full open). There's probably other stuff I don't know.
The logic with the interchangeable pistons was this. If you reduced compression with a plate under the barrel, then when you removed it to increase compression, ring travel wasn't the same (they'd now be going up higher in the bore than before). Increasing the height of the piston above the rings to increase compression kept the rings in their same old wear zone ... Perry
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