| Combustion chamber volume |
3.33 -3.51 in3
(54.5 -57.5 cm3
) |
| Valve stem diameter - intake |
0.2352 -0.2360 in (5.975 -5.995 mm) |
| Valve stem diameter - exhaust |
0.2343 -0.2350 in (5.95 -5.97 mm) |
| Valve stem-to-guide clearance - intake |
0.0007 -0.0027 in (.019 -.069 mm) |
| Valve stem-to-guide clearance - exhaust |
0.0017 -0.0037 in (.044 -.094 mm) |
| Valve head diameter - intake |
1.48 in (37.7 mm) |
| Valve head diameter - exhaust |
1.26 in (32 mm) |
| Valve face runout |
0.0020 in (.05 mm) |
| Valve face angle |
3 angle intake / 2 angle exhaust |
| Valve seat width - intake |
0.047 -0.055 in (1.2 -1.4 mm) |
| Valve seat width - exhaust |
0.055 -0.063 in (1.4 -1.6 mm) |
| Valve seat roundness |
0.0098 in (.25 mm) |
| Valve seat to guide runout |
0.0016 in (0.04 mm) at bottom of guide |
| Valve seat angle (degrees) - Intake |
120/90/54 degrees |
| Valve seat angle (degrees) - Exhaust |
120/100/60 degrees |
| Valve spring free length - intake |
2.201 in (55.9 mm) |
| Valve spring free length - exhaust |
2.201 in (55.9 mm) |
| Valve spring perpendicularity - intake |
0.067 in (1.7 mm) |
| Valve spring perpendicularity - exhaust |
0.067 in (1.7 mm) |
| Valve spring compression force - intake |
813 N |
| Valve spring compression force - exhaust |
813 N |
| Valve spring installed height - intake |
1.7913 in (45.5 mm) |
| Valve spring installed height - exhaust |
1.7913 in (45.5 mm) |
| Valve spring installed force - intake |
293 N |
| Valve spring installed force - exhaust |
293 N |
| Roller follower ratio |
2.039:1 intake / 2.041:1 exhaust, max |
| Cylinder head gasket surface flatness |
0.025 mm (0.001 in) in any 25 mm (1 in) x 25 mm (1 in) area; 0.050 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.1 mm (0.004 in) overall |