Acura NSX 1991 Manual page 129

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NOTE: New rod bearings must be selected by matching
connecting rod assembly and crankshaft identification
markings (see page 7-8).
CONNECTING ROD
BEARINGS
Clearance, page 7-7
Selection, page 7-8
CONNECTING ROD
WASHER
CONNECTING ROD CAP NUT
8 x 0.75 mm
20 N-m (2.0 kg-m, 14 Ib-ft)
then turn 95°
After torquing each bearing
cap, rotate crankshaft to
check for binding.
Table of Contents
TIMING
BELT
SIDE
CONNECTING ROD ASSEMBLY
End play, page
Selection, page
CYLINDER BORE SIZES
NOTE: To maintain proper piston clearance,
match these letters with the letters on the
pistons. The letters on the block read from
left to right, No. 1 through No. 3. cylinders
on the first line and No. 4 through No. 6
cylinders on the second line.
CONNECTING ROD BEARING CAP
Installation, page 7-18 to 7-21
NOTE: Install caps so the bearing recess is
on the same side as the recess in the rod.
CAUTION:
• The piston skirt is coated with molybdenum;
handle the piston carefully to prevent any
damage.
• The connecting rods are made of titanium. At-
tempting to remove the piston pin with conven-
tional shop equipment will damage the connec-
ting rod.
• If the piston, connecting rod, or piston pin re-
quire replacement, all three must be replaced as
an assembly.
PISTON
Inspection, page
NOTE:
• Before removing piston, inspect the top
of the cylinder bore for carbon build-up
or ridge. Remove ridge if necessary, page 7-9.
• To maintain proper piston clearance, match
the letter on the piston top (No letter denotes A.)
with the letter for each cylinder stamped on the
block.
7-6
7-14
CONNECTING ROD BOLT
Inspect top of each cylinder bore
for carbon build-up or ridge
before removing piston.
Remove ridge if necessary, page
7-13
PISTON RINGS
Replacement, page 7-15
Measurement, pages 7-15
Alignment, page 7-16
ENGINE BLOCK
Cylinder bore inspection, page
Warpage inspection, page 7-12
Cylinder bore honing, page
and 7-16
7-9
7-12
7-13