High Performance Valve Springs
68lb seat pressure at 32.6mm installed height using OEM retainer and base. 166lb at 11.5mm lift. Maximum lift is 13.0mm.
Extreme Beehive Valve Springs with Titanium Retainers | Toyota 1JZ-GTE Engine
Nissan RB20DET / RB25DET Engine Valve Springs
Pre-NVCS. 85lb seat pressure @ 36.0mm install height.
102lb seat pressure at 39.8mm installed height. 293lb at 13.7mm valve lift.
Installed pressure is 80lb at 39mm. Coil bind is 25.5mm
Drop-in PACALOY high-performance single valve spring set. Use with OEM retainers and spring base.
80lb seat pressure at 39.10mm installed height. Coil bind at 24.00mm.