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General Site Info => General Discussion => Topic started by: zieg85 on February 11, 2012, 09:48:03 am

Title: How tight is tight enough???
Post by: zieg85 on February 11, 2012, 09:48:03 am

I have been wondering this question for a while now and just read another thread on it and I thought I would ask.  When hangers or other items, such as in 4x4 conversions are done and stuff normally riveted from the factory are now bolted instead.  Using grade 8 bolts how tight is tight enough?  Is there a general rule per size of bolt in ft/lbs or just torque it to your blue in the face?  My stuff is like putting the front stabilizer brackets on the frame which is not as critical as bolting shackle mounts...

Title: Re: How tight is tight enough???
Post by: VileZambonie on February 11, 2012, 09:54:22 am

Great question Zeig... Let me dig up the post we had on this a while back. It included a chart of standard torque values based on tensile strength, pitch etc. Standby

Title: Re: How tight is tight enough???
Post by: VileZambonie on February 11, 2012, 09:56:33 am

http://www.zerofast.com/torque.htm

http://forum.73-87chevytrucks.com/smforum/index.php/topic,14811.msg115111.html#msg115111

http://forum.73-87chevytrucks.com/smforum/index.php/topic,10704.msg77203.html#msg77203

Title: Re: How tight is tight enough???
Post by: zieg85 on February 11, 2012, 12:54:08 pm

Quote from: VileZambonie on February 11, 2012, 09:54:22 am

Great question Zeig... Let me dig up the post we had on this a while back. It included a chart of standard torque values based on tensile strength, pitch etc. Standby

Awesome, you da man!!!  Must have missed that thread last year.  I am gone one week a year in January....  Thank you Vile

Title: Re: How tight is tight enough???
Post by: Blazin on February 11, 2012, 09:12:40 pm

I use the two grunt method allot!

Title: Re: How tight is tight enough???
Post by: beastie_3 on February 16, 2012, 03:01:41 pm

Are those links in the tech section?

Title: Re: How tight is tight enough???
Post by: Lt.Del on February 16, 2012, 07:32:24 pm

Quote

I use the two grunt method allot!

I'm from the country.  Tighten it til she breaks, then you know how tight you should tighten the others.

Title: Re: How tight is tight enough???
Post by: Blazin on February 16, 2012, 07:53:44 pm

Yup, just a little more, eh maybe a little more. Oh crap, I guess that was to much!

Title: Re: How tight is tight enough???
Post by: zieg85 on February 16, 2012, 09:06:20 pm

Quote from: Blazin on February 16, 2012, 07:53:44 pm

Yup, just a little more, eh maybe a little more. Oh crap, I guess that was to much!

That is why I asked.  I have broken my share of grade 8 bolts and the last thing I want to do is tighten it to much and have it fail under use...

Title: Re: How tight is tight enough???
Post by: Sartobuilt on February 16, 2012, 09:13:48 pm

I usually go a quarter turn before it breaks.