What is the torque spec on a 3/8 bolt?
ASTM A449 / SAE Grade 5*
| Bolt Size | TPI | Tightening Torque (ft lbs) |
|---|---|---|
| Galv+Waxed | ||
| 3⁄8 | 16 | 15 |
| 7⁄16 | 14 | 25 |
| 1⁄2 | 13 | 38 |
What is the torque on a 3/4 Grade 8 bolt?
US Recommended Bolt Torque
| Size | Recommended Torque | |
|---|---|---|
| Grade 2 | 18-8 S/S | |
| 5/8″ | 73 | 93 |
| 3/4″ | 125 | 128 |
| 7/8″ | 129 | 194 |
What should head torque be on Ford 3.8?
Loosen the long bolts to between 29 and 37 foot-lbs. of torque and the short bolts to between 7 and 15 foot-lbs. of torque. Then, tighten each bolt an additional 90 degrees. The last two steps–the loosening and then the 90 degree tightening–should both be performed on each bolt before moving to the next bolt.
What does torque mean on a cylinder head?
Torque refers to the force required to rotate an object, in this case a nut or a bolt, around an axis or pivot. You can think of it as a twist. Some components, especially involving the cylinder head, utilize a helical sequencing for torquing. For this sequence, begin torquing with the center-most bolt and work outward in both directions evenly.
How much torque does a hexagon engine have?
Head: Hexagon Cylinder Head To Engine Block 37 444 50.17 3800 II – 3 Steps: 37FtLbs; +130deg; +30deg (Center 4 Only) Type: Bolt Head: Hexagon
Where does the torque come from in an engine?
Cylinder Head In an engine, the cylinder head, also known simply as the “head,” sits atop the cylinders on the cylinder block. The apparatus consists of a platform that includes valves and spark plugs. Torque refers to the force required to rotate an object, in this case a nut or a bolt, around an axis or pivot. You can think of it as a twist.