SPECIFICATIONS
Page 315
Valve Roller Follower Bore
1.1245–1.1255 in.
28.562–28.588 mm
Valve Roller Follower OD
1.122–1.123 in.
28.499–28.524 mm
Valve Roller Follower-to-Bore Clearance
0.0015–0.0035 in.
0.038–0.089 mm
Valve Roller Follower H-Ring Bore
1.1245–1.1255 in.
28.562–28.588 mm
Valve Roller Follower H-Ring OD
1.1261–1.1265 in.
28.603–28.613 mm
Valve Roller Follower H-Ring-to-Bore Press Fit
0.0006–0.0020 in.
0.015–0.051 mm
CYLINDER HEAD
Alignment Across Exhaust Ports
0.005 in.
0.127 mm
Deck Flatness (over 18 in./45.72 cm)
0.0015 in.
0.0381 mm
Overall Height
6.391–6.397 in.
162.331–162.484 mm
Fire Ring Groove (width)
0.030–0.036 in.
0.762–0.914 mm
Fire Ring Groove (depth)
0.005–0.013 in.
0.127–0.330 mm
Fire Ring Groove (ID)
5.137–5.139 in.
130.479–130.531 mm
Valve Guide OD
0.6886–0.6881 in.
17.4904–17.4777 mm
Valve Guide Ream ID (after installation, inlet and exhaust,
used with 3/8 valve stem)
0.3745–0.3755 in.
9.5123–9.5377 mm
Top End of Valve Guide to Valve Spring Seat
0.959
±
0.040 in.
24.359
±
1.016 mm
Valve Guide Bore in Head
0.686–0.687 in.
17.424–17.450 mm
Valve Guide to Bore (press-fit)
0.0011–0.0026 in.
0.0279–0.0660 mm
Valve Guide Extension (fire deck to top of guide)
5.24
±
0.03 in.
113.096
±
0.762 mm
Yoke Guide Pin OD
0.4389–0.4392 in.
11.1481–11.1557 mm
Yoke Guide Pin Installed Height
1.848–1.918 in.
46.939–48.717 mm
Valve Seat Width (inlet and exhaust)
0.051–0.081 or
1/16
±
1/64 in.
1.295–2.057 or
1.588
±
0.397 mm
Valve Seat Insert Face Angle (inlet)
20
°
30
′
±
15
′
Valve Seat Insert Face Angle (exhaust)
30
°
−
0
′
/+30
′
Valve Seat-to-Guide Runout
0.002 in. F.I.M.
0.0508 mm
Valve Seat Insert Counterbore Diameter (inlet)
1.8285–1.8295 in.
46.4439–46.4693 mm
Valve Seat Insert Counterbore Diameter (exhaust)
1.6875–1.6885 in.
42.8625–42.8879 mm
Valve Seat OD (inlet)
1.831–1.832 in.
46.507–46.533 mm
Valve Seat OD (exhaust)
1.692–1.693 in.
42.977–43.002 mm
Valve Seat Insert (inlet, press-fit in head)
0.0015–0.0035 in.
0.0381–0.0889 mm
Valve Seat Insert (exhaust, press-fit in head)
0.0035–0.0055 in.
0.0889–0.1397 mm
Valve Seat Counterbore Depth (inlet)
0.360–0.364 in.
9.144–9.246 mm
Valve Seat Counterbore Depth (exhaust)
0.372–0.376 in.
9.449–9.550 mm
Injection Nozzle Holder Insert Bore
Upper and 2nd Bore
1.0740–1.0754 in.
27.280–27.315 mm
Lower Bore
1.058–1.060 in.
26.873–26.924 mm
Lobing (Max. per 30-degree Segment)
0.0004 in.
0.010 mm
Injection Nozzle Holder Insert OD
Upper and 2nd Sealing Diameters
1.0773–1.0781 in.
27.363–27.384 mm
Lower Sealing Diameter
1.06145–1.06225 in.
26.961–26.981 mm
Tolerances Are Shown Low to High
Standard Size or Fit
Component
English
Metric
5_106_00.bk Page 315 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs
