
Valve Seat Width Limit 1.60 MIN 0.063
3.18 MAX 0.125
Valve Guide Bore I.D. 19.05 MIN 0.750
19.07 MAX 0.751
Valve Guide O.D. 19.088 MIN 0.7515
19.101 MAX 0.7520
Valve Guide Height (Installed) 32.26 MIN 1.270
32.51 MAX 1.280
Valve Guide I.D. (Installed) 11.494 MIN 0.4525
11.557 MAX 0.4550
Valve Seat Insert Bore Depth (Standard
Insert) 7.24 MIN 0.285
7.37 MAX 0.290
Valve Seat Insert Bore I.D. (Standard
Insert) 50.787 MIN 1.9995
50.813 MAX 2.0005
Cylinder Head - Rebuild Specifications Specifications
Page 18-40 NT 855
Part or Assembly Ref. Point mm in
Perfect..