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

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

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

> 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.


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

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

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

"Whelan - '02 200exc (x2) & '04 MTD 38" <yosef@sisna.com> wrote in message
news:3f29142f-5f18-4236-9a5c-f87ecb7b17d2@s12g2000prg.googlegroups.com...
> 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

Another link:
http://www.rockcrawler.com/techrepor...rque/index.asp

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

On Dec 4, 3:08 pm, "Dave Smith" <ab...@sbcglobal.net> wrote:
> "Whelan - '02 200exc (x2) & '04 MTD 38" <yo...@sisna.com> wrote in messagenews:3f29142f-5f18-4236-9a5c-f87ecb7b17d2@s12g2000prg.googlegroups.com...
>
> > 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
>
> Another link:http://www.rockcrawler.com/techrepor...rque/index.asp
>
> His example toward the end shows a 50% difference in torque to get the same
> preload.

I'm glad that's all settled !

On Wed, 5 Dec 2007 02:23:57 -0800 (PST), FiftyPlus
<aldavis@mich.com> wrote:

>On Dec 4, 3:08 pm, "Dave Smith" <ab...@sbcglobal.net> wrote:
>> "Whelan - '02 200exc (x2) & '04 MTD 38" <yo...@sisna.com> wrote in messagenews:3f29142f-5f18-4236-9a5c-f87ecb7b17d2@s12g2000prg.googlegroups.com...
>>
>> > 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
>>
>> Another link:http://www.rockcrawler.com/techrepor...rque/index.asp
>>
>> His example toward the end shows a 50% difference in torque to get the same
>> preload.
>
>I'm glad that's all settled !

I hate these threads that I feel like I actually know LESS after
reading them.



----
Go fast and aim for where the trees aren't.
----

scrape says:

> I hate these threads that I feel like I actually know LESS after
> reading them.

http://gltrs.grc.nasa.gov/reports/1990/RP-1228.pdf
Details on page 15 through 17

I'm thinking I'll believe Mr. Barrett (R.I.P) over rockcrawler.com.


Go fast. Take chances.
Mike S.

>> I hate these threads that I feel like I actually know LESS after
>> reading them.
>
> http://gltrs.grc.nasa.gov/reports/1990/RP-1228.pdf
> Details on page 15 through 17
>
> I'm thinking I'll believe Mr. Barrett (R.I.P) over rockcrawler.com.
>
>
> Go fast. Take chances.
> Mike S.

If you are printing it out, print pages 17-19

"Whelan - '02 200exc (x2) & '04 MTD 38" <yosef@sisna.com> writes:
> "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?

a physicist who worked in the FIAT research center, discussing the use
of antiseize compound, said that the torque is basically given by
friction between bolt head and mating surface, not friction between
threads. This is convincing, because you start finding a meaningful
resistance, when you install a bolt, only when the bolt head touches
the surface. So, basically, unless you apply antiseize/lubricant to
bolt head, torque reading should be essentially the same

Ciao
--
Carlo Vittoli
Quartu S.Elena, Sardinia, Italy