Acura NSX 1991 Manual page 119

Main Menu
Valves, Valve Springs and Valve Seals
Installation Sequence
NOTE: Exhaust and intake valve seals are NOT interchangeable.
INTAKE VALVE SPRING
NOTE: Place the end of valve
spring with closely wound coils
toward the cylinder head.
INTAKE VALVE SEAL
(WHITE SPRING)
Replace.
VALVE SEAL INSTALLER
(Commercially available)
KD-2899
Table of Contents
OUTER
SPRING
INNER
SPRING
(M/T only)
SPRING SEAT
NOTE: Install the valve spring seats
before installing the valve seals.
VALVE SEAL
Replace.
VALVE KEEPERS
VALVE SPRING
RETAINER
VALVE SPRING
EXHAUST VALVE SEAL
(BLACK SPRING)
Replace.