What size are the intake bolts on a 351 Windsor?

What size are the intake bolts on a 351 Windsor?

351W Ford Small Block V8, 2.56″ Overall Length, 2.25″ Under Head Length, 5/16″-18 Thread Pitch.

Do I need new 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.

Can I reuse my intake manifold bolts?

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.

What do you torque intake manifold bolts to?

Intake manifold bolts on SBC engines should be torqued to 30 lb-ft in a two-step sequence. First time around, set your torque wrench to 20, follow the pattern, then repeat the pattern (image above) again after setting the wrench to 30.

Are intake manifold bolts TTY?

Intake to engine bolts are TTY though. THOSE are found at the dealer, and surprisingly enough, cheaper than most other places.

Should I use Loctite on intake manifold bolts?

The reason you do want to use the Loctite on all the mounting bolts is because they are low clamping force bolts. They aren’t very tight when torqued properly, so all it takes is age, shrinkage, and poof… now the bolt can vibrate loose over time and cause the gasket to fail.

Can you reuse intake manifold gaskets?

you can reuse them.

What happens if you over torque your intake manifold?

Over tightening can damage the seal or cause the manifold to warp. Any thing that has a seal should absolutely be torqued to spec. Anything that has a torque spec; which is really everything should be to avoid snapped of bolts or things falling off from fasteners loosing over time do to vibration.

What happens if intake manifold is not torqued properly?

An oil leak may result if the vertical bolts are not tightened before the diagonal bolts on the lower intake manifold. If the intake manifold gasket does not make a tight seal around the coolant ports, it may leak coolant into the crankcase.

Are intake manifold bolts torque to yield?

Normally you don’t “torque” an intake anyway. All that’s really important is getting the proper tightening sequence and tighten each bolt a little at a time. Most intakes are only ~25 ft/lbs.

Are lq4 main bolts reusable?

The intake manifold, rocker arm, and rear cover bolts can be reused. The vertical main bolts can also be re-used, but the side bolts are often replaced because they have sealant on them. These can be re-used if sealant is re-applied.