Honda Acura NSX 1991 Service Manual page 119

7.
tachment over the end of the driver (The washer will
absorb some of the impact and extend the life of the
driver).
6 mm
8. Install the new guide(s) from the camshaft side of
the head; drive each one in until the attachment bot-
toms on the head. If you have all twelve guides to
do, you may have to reheat the head one or two
more times.
VALVE GUIDE
mm
DRIVER, 5.5
07742-0010100
NOTE: Valve guide replacement can be performed
with this special tool.
Removal and Installation
VALVE GUIDE DRIVER
07742-0010100
Valve Guide Installed Height:
Intake: 13.75-14.25 mm (0.541-0.561 in)
Exhaust: 13.75-14.25 mm (0.541-0.561 in)
r
-Valve Guide Reaming
NOTE: For new valve guides only.
1 .
2.
3. Continue to rotate the reamer clockwise while
ATTACHMENT
4.
5 .
ATTACHMENT
e
Coat both reamer and valve guide with cutting oil.
Rotate the reamer clockwise the full length of the
valve guide bore.
removing it from the bore.
Thoroughly wash the guide in detergent and water
to remove any cutting residue.
Check clearance with a valve (page 6-43).
guides without exerting
REAMER HANDLE
\
pressure.
VALVE GUIDE
mm
REAMER, 5.5
Turn reamer in
clockwise direction