Valve Spring: Specifications
| Valve spring compression pressure | Intake (N @ spec length | 153 lbs @ 1.18 inch |
| Exhaust (N @ spec length | 153 lbs @ 1.18 inch | |
| Valve spring free length (approximate) | Intake | 1.84 inch |
| Exhaust | 1.84 inch | |
| Valve spring installed pressure N @ spec. length | Intake | 51 lbs @ 1.57 inch |
| Exhaust | 51 lbs @ 1.57 inch | |
| Valve spring installed pressure N @ spec. length | Service limit | 10% force loss @ specified height |
| Valve springs | Out of square limit | 1% |