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Fitting Pistons

WARNING: This page is about a different car, the 2001 Mazda Millenia and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure piston skirt at 90-degree angle to piston pin, .650" (16.5 mm) below lowest piston ring groove. Measure cylinder bore diameter just below top of bore, at middle of cylinder bore and just above bottom of cylinder bore and record measurements.
  2. If cylinder taper and out-of-round are not within specification, bore cylinder to next oversize. If cylinder taper and out of round are within specification, subtract piston diameter measurement from cylinder bore measurement to determine piston-to-cylinder clearance. See PISTONS, PINS & RINGS  table under ENGINE SPECIFICATIONS. If piston-to-cylinder clearance is excessive, replace piston or bore cylinder to next oversize.
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