What is a typical cylinder head tightening sequence?
Normally you would tighten conventional head bolts in a crisscross pattern in three steps, to one-third, two-thirds, and then to the final torque. Next, turn all the bolts, again in sequence, by 90 degrees. Then turn them all yet again, in sequence, a final 90 degrees.
What is star pattern for tightening bolts?
For all 5-bolt parts, you’ll want to tighten them down using a “star” pattern. Starting at top-dead-center, tighten the first bolt until it’s just begun to tighten. Going clockwise or counterclockwise, skip the next bolt, and repeat the process. Keep tightening every-other bolt until all five are slightly tight.
Why torque is required for bolts?
Torque is used to create tension. Bolts are used to affix two components so that they can resist tensile (pulling apart) and shearing (sliding apart) forces. After the nut has been turned onto the bolt, additional torque causes the nut to turn and stretch the bolt.
What are torque specs?
Main and Rod Bearing Caps. Install the main bearing caps before installing the connecting rod caps.
What are the torque specs for vehicles?
What Are the Torque Specs for Vehicles AMC Trucks GM Trucks. A lot of things go between the engine block and oil pan that help components to go round and round, up and down. 5-Liter, Inline Four-Cylider. The base engine offered in the 1999 Ford Ranger is a 2.5-liter, inline four-cylinder motor. 0-liter V6. 0-Liter V6.
What is automotive torque?
In practical automotive terms, torque is a measurement of an engine’s ability to turn the wheels at any given RPM. A higher torque rating is a good indicator of acceleration ability, especially when that torque rating is available at a low RPM.