Stripped RB down to check wear
Posted: Wed May 27, 2009 7:32 pm
This was a barrell bought secondhand that had holed a piston just under a year ago, cleaned ally off the barrell and just reused it
used a racetour piston with one ring only (to tight to buy another piston, second ring land in a bad way)
not sure exact mileage as speedo broke but possibly 3 thousand miles
performance had tailed off, down to high 70's
only real wear is around the bridges, the ring is slaughtered and very uneven wear esp where the bridges run
assuming the marks over the central part of the piston are where i didnt chamfer the exhaust port (didnt know about diamond needle files then)
any comments on the pictures to further my education
used a racetour piston with one ring only (to tight to buy another piston, second ring land in a bad way)
not sure exact mileage as speedo broke but possibly 3 thousand miles
performance had tailed off, down to high 70's
only real wear is around the bridges, the ring is slaughtered and very uneven wear esp where the bridges run
assuming the marks over the central part of the piston are where i didnt chamfer the exhaust port (didnt know about diamond needle files then)
any comments on the pictures to further my education
