Specifications

72
Model OH120 Model OH140 Model OH150 Model OH160 Model OH180
Description U.S. Metric U.S. Metric U.S. Metric U.S. Metric U.S. Metric
Side Clearance Ring .0015 .038 .0015 .038 .0015 .038 .0015 .038 .0015 .038
Groove Compression .0035 .089 .0035 .089 .0035 .089 .0035 .089 .0035 .089
Ring End Gap .010 .254 .010 .254 .010 .254 .010 .254 .010 .254
.020 .508 .020 .508 .020 .508 .020 .508 .020 .508
Top Piston Land Clearance .031 .787 .030 .762 .031 .787 .031 .787 .031 .787
.034 .864 .035 .889 .036 .864 .036 .864 .036 .864
Camshaft Bearing Diameter .6235 15.837 .6235 15.837 .6235 15.837 .6235 15.837 .6235 15.837
.6240 15.850 .6240 15.850 .6240 15.850 .6240 15.850 .6240 15.850
Cam Lobe Diameter Nose 1.3117 33.317 1.3117 33.317 1.3117 33.317 1.3117 33.317 1.3117 33.317
to Heel 1.3167 33.444 1.3167 33.444 1.3167 33.444 1.3167 33.444 1.3167 33.444
CROSS REFERENCE LIST CROSS REFERENCE LIST
Craftsman Engine Model See Model Craftsman Engine Model See Model
143.626272 OH160
143.630012 OH160
143.630022 OH160
143.640012 OH160
143.640022 OH160
143.640032 OH160
143.640042 OH160
143.640052 OH160
143.650012 OH160
143.650022 OH160
143.650032 OH160
143.660012 OH160
143.660022 OH160
143.670012 OH140
143.670032 OH160
143.670042 OH140
143.670052 OH160
143.670062 OH160
143.670072 OH160
143.670082 OH140
143.670092 OH140
143.680012 OH140
143.680022 OH140
143.680032 OH160
143.700012 OH180
143.710012 OH160
143.710022 OH140
143.730012 OH160
143.730022 OH140
143.740012 OH140
143.740022 OH160
143.770022 OH180
“Torque specifications listed on this page should not be confused with the torque value observed on engines
which have been run. Torque relaxation occurs on all engines from thermal expansion and contraction. The
torque specifications take relaxation into account so a sufficient clamping force exists after an engine has
been run.”