Valve Specifications
VALVES
| Application | In. (mm) | ||||
|---|---|---|---|---|---|
| 4.0L | |||||
| Intake | |||||
| Head Diameter | 1.91 (48.51) | ||||
| Face Angle | 45° | ||||
| Seat Angle | 44.5° | ||||
| Seat Width | .040-.060 (1.02-1.52) | ||||
| Stem Diameter | .312 (7.92) | ||||
| Stem Clearance | .001-.003 (.03-.08) | ||||
| Valve Lift | .424 (10.76) | ||||
| Exhaust | |||||
| Head Diameter | 1.50 (38.10) | ||||
| Face Angle | 45° | ||||
| Seat Angle | 44.5° | ||||
| Seat Width | .040-.060 (1.02-1.52) | ||||
| Stem Diameter | .312 (7.92) | ||||
| Stem Clearance | .001-.003 (.03-.003) | ||||
| Valve Lift | .424 (10.76) | ||||
| 4.2L | |||||
| Intake | |||||
| Head Diameter | 1.78-1.79 (45.3-45.5) | ||||
| Face Angle | 29° | ||||
| Seat Angle | 30° | ||||
| Seat Width | .040-.060 (1.02-1.52) | ||||
| Stem Diameter | .3715-.3725 (9.44-9.46) | ||||
| Stem Clearance | .001-.003 (.03-.08) | ||||
| Valve Lift | .405 (10.29) | ||||
| Exhaust | |||||
| Head Diameter | 1.40-1.41 (35.6-35.8) | ||||
| Face Angle | 44° | ||||
| Seat Angle | 44.5° | ||||
| Seat Width | .040-.060 (1.02-1.52) | ||||
| Stem Diameter | .3715-.3725 (9.44-9.46) | ||||
| Stem Clearance | .001-.003 (.03-.08) | ||||
| Valve Lift | .405 (10.29) | ||||
| Installed Valve Spring Height | |||||
| 4.0L | 1.625 (41.29) | ||||
| 4.2L | (1) | ||||
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