anti-seize and torque settings

 p235 December issue Dirt Rider:

"Banish Stud Crud"

"Use an antiseize compound on all cylinder head studs to get a more
accurate torque reading."

Didn't we conclude torque specs are based on solvent-cleaned threads
and using antiseize then torquing over-torques?

-Joe

 
I just read something a day or two ago - it specified torque, then re-
specified at -30% when using anti-seize.

Damn, can't remember where I saw that (short term memory loss - I hate
it).  If I do, I'll post a link.

JayC

 
OK - this isn't where I originally read it, but these guys say 20%,
and they make the crap.

http://www.saftlok.com/safteze/antiseiz/aircraft.htm

JayC

Is replying to your own posts like talking to yourself - and answering?

 Even better - an engineering application note for a gizmo that
measures applied torque vs. thread torque vs. axial tension.

They say 10%.

http://www.amti.biz/PDFDownloads/Bolt3applnote.PDF

I'd say back off 15% and call it a day.

JayC


No.  You're having a conversation with someone else.  Shut up!  NO,
YOU SHUT UP!!

 

Another link:
http://www.rockcrawler.com/techreports/fasteners_torque/index.asp

His example toward the end shows a 50% difference in torque to get the same
preload.