GSC Power-Division Conical Valve Spring kit for the Nissan/Infiniti VR30DDTT

GSC Power-Division Conical Valve Spring kit with Ti retainer and Chromoly Seat for the Nissan VR30DDTT  91 lbs @ 1.297" install height GSC5083 Conical Valve Spring Kit with Ti Retainer W/ Chromoly Seat for the Nissan VR30DDTT Setup Coil Bind (in) Install Height (in) Seat Pressure (lbs) Open Pressure, 10.00mm lift Maximum Valve Lift (in) Conical 0.786 1.297 91 221lbs @ 0.904" 0.451 Max RPM:  9,500 RPM Max boost: 40 psi The GSC Power-Division Conical Valve Spring Kit with Ti Retainer for the Nissan VR30DDT includes 24 titanium retainers, 24 conical valve springs, and 24 valve spring seats.  True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a vary