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a grade 8 bolt is stronger, about twice as strong.
The torque needed to loosen a bolt or joint is often much higher than the torque needed to put the bolt in in the first place. There is no set value difference between the two, unfortunately.
grade refers to composition and strength. Generally a higher Grade ( number or alphabet) is a stronger material. For example Grade C is stronger than Grade A Grade 8 bolt is stronger than grade 5 bolt.
A grade 5 hardness bolt is a bolt made of medium carbon steel and depending on the manufacturer can either be or not heat treated.
head torque sequence, ft lbs, 4239d jd engine
They are grade eight, and a special length. Do not use a normal bolt.
A type of indicator of the temper (grade) of the bolt. I think 3 lines = grade 8. other bolts use different indicators, too. on japenese bolts, sometimes a dot is used so they can count revolutions to reach desired torque of bolt without using torque wrench. hope that helps ya.
The first thing we have to know is--what torque? Is it Head bolt torque, rod bolt torque, main cap torque, water bolt torque, or something else? Please specify.
Consult a generic torque specification chart based on the size and grade of the of the bolts (top of bolt will have that info on it).
22re rod bolt torque
M20 -bolt, what is the torque value M24 M24
The bolt could have been faulty, or the torque wrench may not be calibrated.
The torque of a water pump bolt can be requested from the manufacturer. The Chevy Trailblazer has a high torque for the water pump bolt.
It is in a shlp manual from AUTOBOOKSONLINE.COM
Torque is not the type of bolt but a type of wrench used to tighten bolts. A torque wrench will tell you how tight a bolt is tightened like 60lb of torque or tighten to 80lb of torque so a bolt will be tight enough to stay in but not too tight that you strip the bolt.
how much torque on a head bolt
1987 Chevy head bolt torque 2.5L?