Valve: Specifications
| Cylinder Head/Valve Train (4.6L) head gasket surface-WT = 10.0/2.5. Head gasket surface finish-RZU-13.5 microns. Filter cut off at 0.08 mm, TPI Q- 3.5 microns below the peak 63% min. cutoff at 0.8 mm, 0 Ref=2V. | Valve seats width-intake (inch) | 0.075-0.083 | |
| Valve seats width-exhaust (inch) | 0.075-0.083 | ||
| Valve seats angle | 44.51-45.01degrees | ||
| Valve seats runout (T.l.R.) max (inch) | 0.0010 | ||
| Valve arrangement (front-to-rear) | (Left Hand) | E-l-E-I-E-I-E-I | |
| (Right Hand) | I-E-I-E-I-E-I-E | ||
| Valve stem to guide clearance-intake (inch) | 0.00079-0.00272 | ||
| Valve stem to guide clearance-exhaust (inch) | 0.0018-0.0037 | ||
| Valvehead diameter-intake (inch) | 1.75 | ||
| Valvehead diameter-exhaust (inch) | 1.34 | ||
| Valvehead diameter-gauge diameters (inch) | 1.67 and 1.26 | ||
| Valve face runout limit (inch) | 0.002 | ||
| Valve face angle | 45.25-45.75 degrees | ||
| Valve stem diameter (Std) * intake (inch) | 0.275-0.2746 | ||
| Valve stem diameter (Std) * exhaust (inch) | 0.274-0.2736 | ||
| Valve springs- compression pressure N @ spec. length-intake | 587.14N by 28.02mm (1.10 inch) | ||
| Valve springs-compression pressure N @ spec. length-exhaust | 587.14N @ 28.02mm (1.10 inch) | ||
| Valve springs-free length (approximate) - intake (inch) | 1.951 | ||
| Valve springs-free length (approximate) - exhaust (inch) | 1.951 | ||
| Valve springs-installed pressure N @ spec. length * intake | 244.64N @ 40.0 mm (1.57 inch) | ||
| Valve spring-installed pressure N force) spec. length *exhaust | 244.64N @ 40.0 mm (1.57 inch) | ||
| Valve springs-installed N @ spec. length - service limit | 10 % pressure less pressure @ 28.02 mm (1.10 inch) | ||
| Valve springs-installed N @ spec. length - out of square limit | 2 degrees | ||
| Valve guide inner diameter (inch) | 0.00079-0.03740 | ||
| Rocker arm-ratio | 1.75:1 | ||
| Valve tappet-diameter (Std) (inch) | 0.66-0.629 | ||
| Valve tappet-clearance to bore (inch) | 0.00071-0.00272 | ||
| Valve tappet-service limit (inch) | 0.00063 | ||
| Valve tappet-hydraulic leakdown rate d | 5-25 seconds | ||
| Valve tappet-collapsed valve tappet gap- desired (inch) | 0.0335-0.0177 | ||
| Cylinder Head/Valve Train (5.4L) | Valve stem guide clearance | Intake | 0.00272-0.00079 inch |
| Exhaust | 0.00374-0.00177 inch | ||
| Valve head diameter | Intake | 1.757-1.747 inch | |
| Exhaust | 1.343-1.334 inch | ||
| Valve face runout (limit) | 0.00197 inch | ||
| Valve face angle | 45.75-45.25 degrees | ||
| Valve stem diameter | Intake | 0.2754-0.2736 inch | |
| Exhaust | 0.2744-0.2736 inch | ||
| Valve stem diameter (list oversizes) | Intake | N/A | |
| Exhaust | N/A | ||
| Valve spring compression pressure | Intake (N @ spec. length) | 720-800 N @ 28-02mm (1.10 inch) | |
| Exhaust (N @ spec. length) | 720-800 N by 28.02mm (1.10 inch) | ||
| Valve spring free length | Intake | 2.10 inch | |
| Exhaust | 2.10 inch | ||
| Valve spring installed pressure N @ spec. length | Intake | 287.19-321.19 N @ 42.56 mm (1.68 inch) | |
| Exhaust | 287.19-321.19 N @ 42.56 mm (1.68 inch) | ||
| Valve springs installed pressure N @ spec. length -service limit | Intake | 5% pressure loss @ 28.80 mm (1.13inch) | |
| Exhaust | 5% pressure loss @ 28.80 mm (1.13inch) | ||
| Valve springs-out of square limit | Intake | 2.0 degrees | |
| Exhaust | 2.0 degrees | ||
| Valve guide inside diameter | 7.044-7.015 mm (0.2773-0.2761inch) |