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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: philo_beddoe on May 22, 2016, 01:45:31 pm

Title: Technical question...
Post by: philo_beddoe on May 22, 2016, 01:45:31 pm

What is the reason for engine bolts and the like, to be tightened to a specific torque, such as an intake manifold, heads, pumps, carb, valve covers,,ect. ?

Is it for proper sealing purposes, or is there more to it?

Title: Re: Technical question...
Post by: 80Chevy4x4 on May 22, 2016, 04:02:35 pm

A lot of torques are because if all the bolts are not the same tightness the part that the bolts are holding will warp and leak. Another reason is the bolts will not come loose after time too.

Title: Re: Technical question...
Post by: blazer74 on May 22, 2016, 04:19:54 pm

Size of bolt, grade of bolt, material of component(s), gasket.
Environment of said component.
Uniform tightening, warping

Title: Re: Technical question...
Post by: Blazin on May 22, 2016, 07:22:55 pm

Thread count per inch also affects torque spec.

Title: Re: Technical question...
Post by: philo_beddoe on May 23, 2016, 02:48:29 pm

Good. Thanks for the input. That makes good sense.