Lonny,
Nice job on the decarbonizing. But to get a handle on the bore condition, you really need to measure it at 3 different locations in the ring travel area relative to the deck height with your telescope gauge. First measure with the gauge lined up with the crankshaft axis. Then rotate the gauge 90 degrees (perpendicular to the crank axis)and measure at the same approximate locations again. This indicates how out-of-round the bore may be. If possible, use a micrometer to measure the telescope gauge instead of calipers...more accurate. You need accuracy down to .0005 if possible.
I'd say that if it's using oil and continually blowing blue smoke, the bore's in need of reconditioning, that is boring to the next oversize.
Nice job on the decarbonizing. But to get a handle on the bore condition, you really need to measure it at 3 different locations in the ring travel area relative to the deck height with your telescope gauge. First measure with the gauge lined up with the crankshaft axis. Then rotate the gauge 90 degrees (perpendicular to the crank axis)and measure at the same approximate locations again. This indicates how out-of-round the bore may be. If possible, use a micrometer to measure the telescope gauge instead of calipers...more accurate. You need accuracy down to .0005 if possible.
I'd say that if it's using oil and continually blowing blue smoke, the bore's in need of reconditioning, that is boring to the next oversize.