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> Low tech talk., Torque specs on your wheels
NataSS Inc
post Jun 3 2004, 10:45 PM
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Due to a couple of recent "incedents" in the ORR community there have been some changes as far as tech inspections. I never thought that valve stems could be a big deal. Well they will be checking every single car to see what type of valve stem you are using. And if it isnt what they reccomend....no racey. So I will be running a BBS, very short, outside locking, rubber sealed valve stem.

But the main reason for the post is they will also be checking your torque on your wheel lugs. What kind of torque are you guys running your lugs to? I have always gone to 100lb/ft. does that sound about right? as far as I knew, there wasnt a "mandated" torque spec in any form of racing. You were just expected to have it on there with enough to hold it there.
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zlexiss
post Jun 4 2004, 03:50 AM
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Keep in mind when checking torque is that you can't check it in a static manner. If you take a tightened lug and wrench against it until you get the click or right reading, but the nut never moves, you didn't measure it correctly.

Torque specs are against dynamic friction, not static. If you want to check nuts already mounted, you need to back them off at least a quarter turn, and then measure while re-tightening.

And if you're using crow's feet on something, remember the foot must be at 90* to the wrench handle, not sticking out in front or behind.

I work at Raytheon Missile Systems, and they actually offer classes to the production workers on how to properly use all the different torque measurement devices, as well as following proper procedures (wet vs dry installs, bolt patterns, etc). When I saw a 4 hour class titled "Advanced Fastener Installation", I was like (IMG:http://www.frrax.com/rrforum/style_emoticons/default/laugh.gif) until I looked at all the stuff they cover.

/lecture off

-Jeff
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NataSS Inc   Low tech talk.   Jun 3 2004, 10:45 PM
Matt   I've always used the factory recommendation of...   Jun 3 2004, 10:47 PM
shortbus   I always do 100 ft/lbs then check them when the hu...   Jun 3 2004, 10:50 PM
Tony99SS   Shouldn't it vary with the size of the wheel s...   Jun 3 2004, 11:27 PM
CMC #37   If you are talking factory 4th gen wheels then 100...   Jun 3 2004, 11:46 PM
zlexiss   Keep in mind when checking torque is that you can...   Jun 4 2004, 03:50 AM

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