What is the torque on the intake manifold?

What is the torque on the intake manifold?

Intake manifold bolts and head studs/bolts have to be torqued in a certain pattern and to a certain torque spec in order for your engine to work properly. Intake manifold bolts on SBC engines should be torqued to 30 lb-ft in a two-step sequence.

How tight should intake manifold bolts be?

Tighten the lower vertical intake manifold bolts to 115 inch-pounds (13 Nm), then tighten the lower diagonal intake manifold bolts to 115 inch-pounds (13 Nm). Make sure you use an accurate torque wrench that has been calibrated within the last six to 12 months.

Do I need to replace intake manifold bolts?

The intake manifold bolts have a rubber expansion grommet made to give with the expansion and contraction of the plastic manifold. It is recommended to replace these bolts when doing an intake manifold gasket to keep even pressure on the gasket at all times.

How do you sequence torque?

Tightening sequence The first pass, lightly tighten the first bolt then move directly across or 180 degrees for the second bolt, then move1/4 turn around the circle or 90 degrees for the third bolt and directly across for the fourth. Continue this sequence until all bolts are tightened.

How important is torque sequence?

Because the joint surfaces compress, tightening one bolt in the vicinity of another will affect the preload generated by the first bolt tightened. A good tightening sequence ensures that an even preload distribution is achieved in the joint (See Dia. A).

How do I know how much torque I need?

Torque is defined the length of the lever arm multiplied by the force applied. For instance, if you have a two-foot long bar and you hang a 10-pound weight from it, you have 20 foot/pounds of torque.

How do I check my torque specs?

Mark the tightened fastener and surrounding application. In the tightening direction, begin to slowly apply force to the tool until the first movement in the fastener is noted. The reading recorded is a good indication of the original torque applied to the joint. This is the best way to determine residual torque.

Are intake manifold bolts reusable?

Intake manifold bolts…. reuse them. They aren’t much more than finger tight anyway. Just make sure the threads are good and the head is good and reuse them.