Specifications

Cylinder Head - Rebuild Specifications
Cylinder Head Flatness Per 25.4 mm
[1.00 in.] of Length 0.020 MAX 0.0008
Cylinder Head Flatness (Total Overall
Length)
0.08 MAX 0.003
Cylinder Head Thickness 109.85 MIN 4.325
111.25 MAX 4.380
Valve Spring Free Height: A
• Valve Spring Part No. 211999 68.20 Nominal 2.685
• Valve Spring Part No. 3035996 66.93 Nominal 2.635
Valve Spring Working Height: B
• Valve Spring Part No. 211999 43.79 Nominal 1.724
• Valve Spring Part No. 3035996 42.44 Nominal 1.671
Load for Working Height: C
• Valve Spring Part No. 211999 295 N MIN 66.5 lbf
326 N MAX 73.5 lbf
• Valve Spring Part No. 3035996 381 N MIN 85.7 lbf
412 N MAX 92.7 lbf
Valve Stem O.D. 11.40 MIN 0.449
11.46 MAX 0.451
Valve Head Thickness at O.D. 1 2.90 MIN 0.114
Valve Guide I.D. (Installed) 11.506 MIN 0.4530
11.557 MAX 0.4550
Cylinder Head - Rebuild Specifications Specifications
Page 18-38 NT 855
Part or Assembly Ref. Point mm in