Engine Valves & Valve Springs Specifications
WARNING: This page is about a different car, the 2004 Infiniti M45 and 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
VALVES & VALVE SPRINGS
| Application | In. (mm) | ||
|---|---|---|---|
| Intake Valves | |||
| Face Angle | 45 Degrees 15 Min.-45 Degrees 45 Min. | ||
| Head Diameter | 1.417-1.429 (36.00-36.30) | ||
| Valve Margin (2003 Model) | .0374-.0492 (.95-1.25) | ||
| Valve Margin (2004 Model) | .0453-.0571 (1.15-1.45) | ||
| Valve Length | 3.8020 (96.57) | ||
| Stem Diameter | .2351-.2354 (5.972-5.980) | ||
| Valve Tip Maximum Refinish | .008 (.20) | ||
| Exhaust Valves | |||
| Face Angle | 45 Degrees 15 Min.-45 Degrees 45 Min. | ||
| Head Diameter | 1.228-1.240 (31.20-31.50) | ||
| Valve Margin (2003 Model) | .0453-.0571 (1.15-1.45) | ||
| Valve Margin (2004 Model) | .0728-.0846 (1.85-2.50) | ||
| Valve Length | 3.720 (94.50) | ||
| Stem Diameter | .2347-.2350 (5.962-5.970) | ||
| Valve Tip Maximum Refinish | .008 (.20) | ||
| Valve Springs (2003 Model) | |||
| Free Length | 2.0189-2.0268 (51.28-51.48) | ||
| Out-Of-Square | .087 (2.2) | ||
| Lbs. @ In. (kg @ mm) | |||
| Pressure | |||
| Standard | 37-42 @ 1.331 (16.8-19.3 @ 33.8) | ||
| Service Limit | 65-84 @ .961 (29.7-38.0 @ 24.4) | ||
| Valve Springs (2004 Model) | |||
| Free Length | 1.8247-1.8444 (46.35-46.85) | ||
| Out-Of-Square | .079 (2.00) | ||
| Lbs. @ In. (kg @ mm) | |||
| Pressure | |||
| Standard | 37-42 @ 1.331 (16.8-19.3 @ 33.8) | ||
| Service Limit | 65-74 @ .961 (29.6-33.7 @ 24.4) | ||