Thanks so much!..Very detailed info on the correct procedure...thanks so much!detailed correct procedure....coolThe link has the information for 1997-2002 Buick Century 3.1, so unless the OP had a different year or model engine it could be incorrect.
Engine - Rocker Arm Bolt Tightening Specification Update
File In Section: 06 - Engine/propulsion System
Bulletin No.: 02-06-01-034
Date: October, 2002
SERVICE MANUAL UPDATE
Revised Rocker Arm Bolt Fastener Tightening Specification
1996-1998 Buick Skylark
1996-2002 Buick Regal
1997-2002 Buick Century
1996 Chevrolet Beretta, Corsica, Lumina APV
1996-2001 Chevrolet Lumina
1996-2002 Chevrolet Monte Carlo
1997 Chevrolet Venture
1997-2003 Chevrolet Malibu
2000-2002 Chevrolet Impala
1996-1997 Oldsmobile Cutlass Supreme, Silhouette
1996-1998 Oldsmobile Achieve
1998-1999 Oldsmobile Cutlass, Intrigue
1999-2002 Oldsmobile Alero
1996-1997 Pontiac Trans Sport
1996-2003 Pontiac Grand Am, Grand Prix
with 3.1L or 3.4L Engine (VINs M, J, E - RPOs L82, LG8, LA1)
This bulletin is being issued to revise the rocker arm bolt fastener tightening specification found in several procedures in the Engine Mechanical - 3.1L sub-section and the Engine Mechanical - 3.4L sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
The correct torque for the rocker arm bolt is 14 N.m (124 lb in) plus 30 degrees. This specification can be found in Fastener Tightening Specifications, Valve Rocker Arm and Push Rod Replacement and Lower Intake Manifold Replacement (for 1996 Chevrolet Beretta/Corsica, 1996-1997 Buick Skylark, Pontiac Grand Am, Oldsmobile Achieva and 1997 Chevrolet Malibu ONLY).
Service and Repair
VALVE ROCKER ARM AND PUSH ROD REPLACEMENT
Disconnect the negative battery cable.
Remove the valve rocker covers.
Remove the rocker arm bolts.
Remove the rocker arm pivot balls.
Remove the rocker arms. Important: Keep the pushrods in order in order to install the pushrods in the original position.
Remove the pushrods.
J 36660-A Torque Angle Meter
Install the pushrods in the original location.
Coat the ends of the pushrods with GM P/N(NNN) NNN-NNNNor the equivalent.
The intake pushrods are identified with yellow stripes and are 5-3/4 inches long.
Exhaust pushrods are identified with green stripes and are 6 inches long.
Ensure that the pushrods seat in the lifter.
Install the rocker arms.
Install the rocker arm pivot balls. Coat the bearing surfaces of the rocker arms and the pivot balls with GM P/N(NNN) NNN-NNNNor the equivalent. Precautions.
Install the rocker arm bolts. See TSB 02-06-01-034
Tighten the bolts to 14 Nm (124 inch lbs.). Use the J 36660-A in order to tighten the bolts an additional 30 degrees.
Install the valve rocker covers.
Connect the negative battery cable.
thnx so muchWhats the Correct way to adjust lifters on a 3.1 engine after doing a intake man, job....I have heard of many differant ways......thnx
There is no valve adjustment necessary on this particular engine and the rocker studs are torque in place (TIP). New TIP bolts rocker arm bolts need to be installed and torqued to spec if you want the original valve train to be the OEM setup! You have good info on the torque of the rocker studs, but none on how to adjust the valves, which is not necessary here.Whats the Correct way to adjust lifters on a 3.1 engine after doing a intake man, job....I have heard of many differant ways......thnx