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Engine Mechanical / Bore sizes CB750
« on: March 01, 2010, 09:56:44 pm »
I need to bore a set of 1973 CB 750 cylinders over sizes.
The best I can determine the original bore is 61.0 mm
To bore over is the new bore size to be 61.250 mm and then hone?
I know I need the over-sized piston but do I also need new piston pins or is it just a good idea?
The best I can determine the original bore is 61.0 mm
To bore over is the new bore size to be 61.250 mm and then hone?
I know I need the over-sized piston but do I also need new piston pins or is it just a good idea?