I've read plenty on this forum about the challenges with using the NSR150 pistons for a 300. Loads of development has been done at Tyga. I seem to remember it put a strain on the big end bearings. It would be worth looking at how machining affects the cases. I also remember Andy's comments that it didn't make a significant increase in power. Another thought, I wonder if the size of the cylinders would need a certain volume in the crank cases?
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Last edited by RobH on Tue Nov 05, 2024 6:11 pm; edited 1 time in total