Question about 2000 Pontiac Grand Am GT

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What are the torque measurements for the rocker arms and intake manafold?

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2.2L Engine & 2.4L Engines
These engines are not equipped with rocker arms. The camshafts directly actuate the valves.

3.1L Engine & 3.4L Engines
When install or connect the check the following:
- Pushrods and the rocker arms. Torque the bolts to 24 ft. lbs. (32 Nm). - Rocker arm cover using a new gasket. Torque the rocker cover bolts to 89 inch lbs. (10 Nm).
- Heater bypass pipe. Torque the screw at the water pump to 106 inch lbs. (12 Nm), the bolt at the cylinder head corner to 18 ft. lbs. (25 Nm) and the nut to 18 ft. lbs. (25 Nm).


About the INTAKE MANIFOLD...
-
Intake manifold nuts and bolts and tighten to 89 inch lbs. (10 Nm)
- Pushrods and rocker arms. Torque the bolts to 89 inch lbs. (10 Nm) plus an additional 30 degree turn. - Lower intake manifold. Apply sealant to the threads of the bolts and torque the bolts to 115 inch lbs. (13 Nm).



what are the torque measurements for the rocker - 859cdc3.jpg

Exploded view of the upper and lower intake-3.1L & 3.4L engines


fe92b8b.jpg

Fig. Lower intake manifold tightening sequence-3.1L & 3.4L engines

Hope help.

Posted on May 04, 2010

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The torque specification is a 2-step process; tighten the vertical lower intake manifold bolts (the four middle ones) to 7 Nm (62 lb in). Tighten the diagonal lower intake manifold bolts (two on each end) to 7 Nm (62 lb in). Tighten the vertical lower intake manifold bolts (the four middle ones) to 13 Nm (115 lb in). Tighten the diagonal lower intake manifold bolts (two on each end) to 25 Nm (18 lb ft).
rocker arms
14 N.m (124 lb. in.) plus 30

Posted on May 04, 2010

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Hi there:

Rocker Arms & Pushrods


Removal & Installation

3.1L & 3.4L Engines
Left Side

  1. Before servicing the vehicle, refer to the precautions section.
  2. Drain the cooling system to a level below the coolant pipe on the front of the engine.
  3. Remove or disconnect the following:
    NOTEKeep the pushrods in order. Intake pushrods are 5 3 / 4 inches long and exhaust pushrods are 6 inches long.


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    Rocker arms and pushrods

To install:

  1. Lubricate all the valvetrain components with engine oil.
  2. Install or connect the following:

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  3. Refill the cooling system.
  4. Start the vehicle and verify no leaks.




3_4_2013_5_26_48_pm.gif


Right Side
  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove or disconnect the following:
    NOTEKeep the pushrods in order. Intake pushrods are 5 3 / 4 inches long and exhaust pushrods are 6 inches long.


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    Rocker arms and pushrods

To install:

  1. Lubricate all the valvetrain components with engine oil.
  2. Install or connect the following:

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  3. Start the vehicle and verify no leaks.





Hope this helps.

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My son has a 3.1 v 6 Lumina engine & was replacing the head gaskets. and he may have gotten the push rods in the wrong place, for someone that has never been in a engine before it is I guest easy to...


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Exhaust push-rods measure 152.51 mm"the long ones".

Below is an image of the top of a 3.1; in red are the exhaust rocker arms, in blue are the intake rocker arms. The other head follows the same pattern just examine and follow the ports.

netvan_117.png

Torque the rocker arm bolts to 124 in.lbs. plus 30 degrees.

I hope this helps.

Regards,

netvan

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