Measure the cylinder bore diameter at 25.4 mm [1 in] and 170.7 mm [5.5 in] from the top of the cylinder block.
Bore I.D. Max – 102.116 mm [4.0203 in]
Bore out of round – .035 mm [.0015 in]
Bore taper – .076 mm [.003 in]
NOTE: Do not proceed with in-chassis overhaul if the cylยญinder bores are worn beyond specifications.