FixVault

Valve Spring

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
Valve Spring Service Data & Specifications

Free height mm (in) 46.90 (1.8465)
Pressure N (kg, lb) at height mm (in) Standard 166 -- 188 (16.9 -- 19.2, 37.3 -- 42.3) at 37.0 (1.457)
Limit 378 -- 426 (38.6 -- 43.5, 85.0 -- 95.8) at 27.8 (1.094)
Out-of-square mm (in) Less than 2.0 (0.079)