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 TM 10-3930-623-12
Crankshaft End Thrust ............................. 0.002/0.006
Width-Top Chrome & 2nd Groove Rings ... 0.0930/0.0940
Main Bearing Size (Case Hole) .............2.4365/2.4372
Width-3rd & 4th Groove Rings ..............0.1545/0.1555
Out-of-Round...................................................0.0005
Thickness-Top Chrome Ring ................... 0.162/0.172
Taper .............................................................0.0005
Thickness-2nd, 3rd & 4th Groove Rings .................0.143/0.153
Runout .............................................................0.002
Gap Clearance-All Rings .......................... 0.010/0.020
Connecting Rods and Bearings
Side Clearance-Top Ring ......................... 0.002/0.004
Bearing Thickness ...............................0.0623/0.0628
Side Clearance-2nd Ring ......................0.0015/0.0035
Bearing Length ........................................ 1.057/1.067
Side Clearance-3rd & 4th Rings ............... 0.001/0.003
Side Play ................................................. 0.006/0.010
Weight Compressed-Top, 3rd & 4th Rings ....... 7-1/2 lb
Connecting Rod Bend .............................. 0.000/0.002
Weight Compressed-2nd Ring ........................ 6-1/2 lb
Crankshaft Journal to Connecting
Camshaft
Rod Bearing Clearance ......................... 0.0008/0.003
Front Journal Size ................................1.8715/1.8725
Connecting Rod Twist ............................. 0.000/0.002
Additional Wear (All Journals) ............................0.002
Pin Bushing Inside Dia ........................0.859310.8596
Intermediate Front Journal Size ............1.8085/1.8095
Pin Bushing Outside Dia........................ 0.9165/09185
Intermediate Rear Journal Size .............1.7457/1.7465
Bearing Outside Dia .............................2.1865/2.1870
Rear Journal Size ................................1.2465/1.2475
Pin Bushing Length...................................... 1.17/1.19
Valve Lift, All Valves ..........................................0.248
Pin Bushing Thickness .........................0.0345/0.0365
End Thrust ............................................. 0.005/0.009
Bearing Inside Din.................................2.0609/2.0624
Camshaft Bushings
Clearance (All) ........................................ 0.002/0.004
Ring Land Clearance................................ 0.028/0.035
Additional Wear (All) .........................................0.002
Skirt Clearance ................................................0.0015
Inside Dia (Front) .................................1.8745/1.8755
Taper of Skirt .......................................0.0005/0.0015
Inside Dia (Intermediate Front) ..............1.8115/1.8125
Pin Hole Dia .........................................0.8593/0.8596
Inside Dia (Intermediate Rear) ...............1.7495/1.7502
Piston Pins
Inside Dia (Rear) ..................................1.2495/1.2505
Pin Dia ................................................0.8591/0.8593
Valves and Springs (Intake)
Additional Wear ................................................0.001
Stem Dia .............................................0.3405/0.3415
Desired Fit in Bushing ..........................0.0000/0.0005
Additional Wear ................................................0.002
Desired Fit in Piston at 70 Deg F ...........0.0001/0.0003
Head Dia ................................................ 1.495/1.505
Pin Length .............................................. 2.738/2.753
Overall Length .....................................5.1745/5.2895
Piston Rings
Valve Face Desired ............................................0.124
Cylinder Dia..........................................3.4375/3.4395
Tappet Clearance (Hot) .....................................0.014
2-4
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