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Fitting Pistons Mazda 626 GC

Measure cylinder bore for out-of-round and taper. Cylinder bore standard value is 3.3859-3.3866" (86.000-86.019 mm). Cylinder bore maximum wear limit is .0059" (.149 mm). If readings exceed maximum, rebore cylinder to next oversize. Pistons are available in standard, .25 mm and .50 mm oversize. Standard diameter is 3.384-3.385" (85.94-85.96 mm).