C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LUG NUT torque

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Old Jun 22, 2005 | 12:56 PM
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Default LUG NUT torque

Anyone know the recomended torque for lugnuts (86 coupe) (away from my books right now - sorry!)

Carl Johansson
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Old Jun 22, 2005 | 12:57 PM
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I 'think' 100 ft/lbs. then retorque after 25 miles.
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Old Jun 22, 2005 | 01:16 PM
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Originally Posted by rspreng86
I 'think' 100 ft/lbs. then retorque after 25 miles.


It is 100 on my '96.
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Old Jun 22, 2005 | 01:37 PM
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Originally Posted by boulderlt4


It is 100 on my '96.

Roger that.

Larry
code5coupe
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Old Jun 22, 2005 | 02:16 PM
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Originally Posted by boulderlt4


It is 100 on my '96.
Ditto on my 91.
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Old Jun 22, 2005 | 03:58 PM
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On my 94 its a 100 but on earlyer models I thought I heard its 80.
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Old Jun 22, 2005 | 04:50 PM
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100 on my "88
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Old Jun 22, 2005 | 04:50 PM
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More torque than a Honda makes
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Old Jun 22, 2005 | 04:59 PM
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Just get an impact gun with about 180psi and let that baby smack it for about five minutes like garages do.

I go 80 myself, 100 feels like it's sinking the nut way into the aluminum sawblabes. If the wheels falls off at 80 it's going to fall off at 100, JMHO
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Old Jun 22, 2005 | 05:49 PM
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With my "clicker" type torque wrench, I was surprised how loose 100 ft.lbs is. When i'd do it by hand, i'd go significantly tighter than 100 just using feel and how tight I thought it should be.
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Old Jun 22, 2005 | 06:02 PM
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100 ft/lbs - It's based on the lug diameter and thread pitch.

I keep the threads lightly lubed with wheel bearing grease. Helps to ensure the torque consistency and prevents thread galling.

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Old Jun 22, 2005 | 06:24 PM
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I use a very light coat of anti-sieze on the lug threads. I had read that depending on the fastener, a grease or oil coating can change the torque value.

I tighten my lugs in three steps to 100 ft-lbs: 50, then 70 then 100 ft-lbs.
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Old Jun 22, 2005 | 06:42 PM
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I have never put a torque wrench on a lug nut. I have not had a wheel fall off yet. I guess I'm just lucky.
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Old Jun 22, 2005 | 07:48 PM
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Originally Posted by C4DC
With my "clicker" type torque wrench, I was surprised how loose 100 ft.lbs is. When i'd do it by hand, i'd go significantly tighter than 100 just using feel and how tight I thought it should be.
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Old Jun 22, 2005 | 09:15 PM
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Originally Posted by dndrsn
I have never put a torque wrench on a lug nut. I have not had a wheel fall off yet. I guess I'm just lucky.
Torquing the lugs evenly helps to keep rotors from warping. If one or two lugs are way too tight, the rotors can warp if they go thru cycles of extreme heat and cooldown.
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Old Jun 22, 2005 | 09:49 PM
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Default thanks guys

I guess I'll use myu clicker wrench and 3 step em to 100 lbs. Thanks
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Old Jun 22, 2005 | 10:52 PM
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Pretty damn tight.

You guys actually use a torque wrench on em?
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Old Jun 22, 2005 | 11:22 PM
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Originally Posted by JrRifleCoach
100 ft/lbs - It's based on the lug diameter and thread pitch.

I keep the threads lightly lubed with wheel bearing grease. Helps to ensure the torque consistency and prevents thread galling.

I would advise checking the GM manual to see if that 100 ft-lb spec was with lubricated parts or "dry". The difference can be very great and could result in overtighting.
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Old Jun 22, 2005 | 11:54 PM
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Originally Posted by CentralCoaster
Pretty damn tight.

You guys actually use a torque wrench on em?
On the Vette, always.

100lbs on wheels,
80lbs for the spare.

Fred
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Old Jun 23, 2005 | 01:08 AM
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Originally Posted by 86C4EVER
On the Vette, always.
I guess I'm the abnormal one then. You guys probably don't offroad in your vettes either. :o
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