| Valve spring compression pressure | Intake (N @ spec. length) | 720-800 N @ 1.10 inch |
| Exhaust (N @ spec. length) | 720-800 N @ 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 @ 1.68 inch |
| Exhaust | 287.19-321.19 N @ 1.68 inch |
| Valve springs installed pressure N @ spec. length service limit | Intake | 5% pressure loss @ 1.13 inch |
| Exhaust | 5% pressure loss @ 1.13 inch |
| Valve springs - out of square limit | Intake | 2.0° |
| Exhaust | 2.0° |