1997 ACURA NSX Service Repair Manual

Page 481 of 1503

ACURA NSX 1997  Service Repair Manual Piston/Connecting Ro d Assemblie s an d Crankshaf t
Removal (cont'd )
• Remov e th e connectin g ro d cap s afte r settin g
the cran k pi n a t BD C fo r eac h cylinder . Remov e
the pisto n ass

Page 482 of 1503

ACURA NSX 1997  Service Repair Manual Crankshaft
Inspection
• Clea n th e crankshaf t oi l passage s wit h pip e
cleaner s o r a  suitabl e brush .
• Chec k th e keywa y an d threads .
Alignmen t
•  Measur e runou t o n al l mai n j

Page 483 of 1503

ACURA NSX 1997  Service Repair Manual Cylinder Bloc k
Inspectio n
1. Measur e wea r an d tape r i n direction s X  an d Y  at
thre e level s i n  eac h cylinde r a s shown .
CYLINDE R BOR E SIZE S ( A o r B )
NOTE : T o maintai n prope r

Page 484 of 1503

ACURA NSX 1997  Service Repair Manual Bore Honin g (A/T )
NOTE : Onl y score d o r scratche d cylinde r bore s mus t b e
honed .
1 . Measur e cylinde r bore s a s show n o n pag e 7-12 . I f
th e bloc k i s t o b e reused , hon e th e cyl

Page 485 of 1503

ACURA NSX 1997  Service Repair Manual 
Piston/Connecting Rod

Assemblies

Inspection

1. Check the piston for distortion or cracks.

NOTE: If cylinder is bored, an oversized piston

must be used.

2. Measure piston diameter at a point 17

Page 486 of 1503

ACURA NSX 1997  Service Repair Manual Piston/Connecting Ro d
Assemblie s
Inspection (cont'd )
3. Calculat e th e differenc e betwee n cylinde r bor e diam -
ete r o n pag e 7-1 2 an d pisto n diameter .
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Page 487 of 1503

ACURA NSX 1997  Service Repair Manual 
Connecting Rods

Selection

Each rod is sorted into one of four tolerance ranges

(from O to 0.024 mm, in 0.006 mm increments) depen-

ding on the size of its big end bore. It's then stamped

wit

Page 488 of 1503

ACURA NSX 1997  Service Repair Manual Piston Ring s
End Ga p
1. Usin g a  piston , pus h a  ne w rin g int o th e cylinde r
bore 15-2 0 m m (0. 6 -  0. 8 in ) fro m th e bottom .
2 . Measur e th e pisto n rin g end-ga p wit h a  feele r
g