How tight should starter bolts be?
1. Position starter motor to engine and install upper and lower bolt finger-tight. 2. Tighten the upper bolts to 21-27 N-m (16-19 lb-ft).
What is the torque for 1/2 bolt?
US Recommended Bolt Torque
| Size | Recommended Torque | |
|---|---|---|
| Grade 2 | 18-8 S/S | |
| 1/2″ | 37 | 45 |
| 9/16″ | 53 | 63 |
| 5/8″ | 73 | 104 |
What is the torque for 1/4 bolt?
ASTM A449 / SAE Grade 5*
| Bolt Size | TPI | Tightening Torque (ft lbs) |
|---|---|---|
| Plain | ||
| 1⁄4 | 20 | 8 |
| 5⁄16 | 18 | 17 |
| 3⁄8 | 16 | 31 |
What are the torque specs for a flywheel?
Small Block Chevy Torque Specs
| Fastener Type | Torque Spec |
|---|---|
| Cam Sprocket Bolts | 18-20 ft.-lbs. |
| Harmonic Damper Bolt | 60 ft.-lbs. |
| Flywheel/Flexplate Bolts | 65 ft.-lbs. |
| Pressure Plate Bolts | 35 ft.-lbs. |
What are the torque specs for a Chevy 350?
Top-End Torque Specs The Chevrolet 350 cylinder-head torque specification is 65 ft. -lbs. The intake installed onto cast-iron heads requires 30 ft.
How do you know what torque to use?
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.
Is torque check necessary?
Checking for loose lug nuts Torque is the unit of measurement for the twisting force that’s applied to a lug nut. Mechanics will ensure that each lug nut has been torqued to the vehicle manufacturer’s specifications when first fitting a wheel. But a second follow-up check is also necessary.
How many threads should stick out past the nut?
How many threads should protrude through a nut in an optimal joint? The generally accepted answer is 1 to 3 threads. Most externally threaded fastener blanks are manufactured with a header point prior to thread rolling, which leaves the first 1 to 2 threads undersized for ease of assembly.
Are fine or coarse threads stronger?
Size for size, a fine thread is stronger than a coarse thread. This is both in tension (because of the larger stress area) and shear (because of their larger minor diameter). Fine threads have less tendency to loosen since the thread incline is smaller and hence so is the off torque.
Should I use coarse or fine drywall screws?
Fine-thread drywall screws are best for installing drywall to metal studs. Coarse threads have a tendency to chew through the metal, never gaining proper traction. Fine threads work well with metal because they are self-threading.
What is the advantage of coarse thread over a fine thread?
Coarse threads are more durable and have greater resistance to stripping and cross-threading. The height of each thread is greater than the corresponding fine thread so there is more material between each thread making flank engagement greater.