Cylinder Head U20
Datsun Roadster 2000 Aftermarket Valve Spring Set
2000 Heavy duty Valve spring set. 8-inner and 8-outer springs. Click here, to view stock Nissan springs. Installed height 1.620. Spring rate is 105 lbs at 1.620. Spring compressed to 1.170, at open pressure, is 210lbs. Coil bind .900 Computations by Degroff's cylinder head service.