Part #: 200-771
One new OEM genuine Nissan valve spring for Datsun 240Z, 260Z, 280Z, 280ZX and 510 1968-83. Will work on "L" series engines, 4 and 6 cylinder. Each valve has an inner and outer valve spring. Choose from inner or outer spring, sold individually.
Dual Spring Specs:
# @ 40mm installed height: 80#
# @ 30mm height: 170#
Coil bind at 26.4mm height (.535" lift from installed height to bind)