Engine - Revised Specifications

File In Section: 6 - Engine

Bulletin No.: 87-61-30

Date: September, 1998

SERVICE MANUAL UPDATE

Subject:
Section 6 - Engine Mechanical - Revised Piston Ring Gap, Crankshaft Main
Bearing Clearance and Piston Pin Specifications

Models:
1996-97 Buick Skylark
1996-97 Oldsmobile Achieva
1996-97 Pontiac Grand Am
with 3100 V6 Engine (VIN M - RPO L82)

This bulletin is being issued to revise the specifications in Section 6 of the Service Manual as follows:

Piston Ring Gap (L82 M)

Piston ring gap with segment at 89.0 mm (3.50 in.)
0.25 - 1.27 mm (0.0098 - 0.05 in.).

Crankshaft Main Bearing Clearance (L82 M)

Crankshaft main bearing clearance (except
number 3) 0.019 0.064 mm (0.0008 0.0025 in.).

Piston Pin (L82 M)

Piston pin clearance in piston 0.0096 - 0.0215 mm
0.0004 - 0.0008 in.).