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looking to put some power down
jared holmes said 2009-06-29 18:53
i have an 1985 kawasaki zx900a ninja gpz style. i have done some tuning and have made the bike a rocket on 2 wheels. but i´m thinking of cracking the case and doing some mechine work. does anyone have any advice on how far i can push tolorances as far as slugging out cylanders decking the block and head or enlarging valve ports.