RE: con rod bolts <MISC>

["Boyd, David (Neighbour Boy)" <boydd@xxxxxxxx>]

Ahh, thanks.  So it sounds as though it's the same thing as angle
torque.

- --David
> ----------
> From: 	Thi VanAusdal[SMTP:tvanausdal@domain.elided]
> Sent: 	Monday, November 09, 1998 10:48 AM
> To: 	'bmw@domain.elided'
> Subject: 	RE: con rod bolts <MISC>
> 
> I'll chime in before someone who knows what they're talking
> about speaks up.  (Gawd, I LOVE getting individual message
> format again!  It's only been a few years ...)
> 
> Basically, instead of torqueing to XX lb-ft, you turn the head of
> the fastener to 20 lb-ft, then YY degrees after that.
> 
> For fasteners designed to deform a certain amount, this
> yield angle nets that amount of deformation.  The idea here
> is that you get uniform, reliable clamping, which also happens to
> be done assembly-line faster than XX lb-ft setting method.
> 
> These fasteners are much more prone to breaking (or not clamping
> with enough force) if re-used.  DO NOT REUSE.  If you're rebuilding
> a BMW motor, this is NOT the place to cheap out, unless, of course,
> you don't warranty your work and enjoy repeating your efforts.
> 
>  - Thi VanAusdal
> 
> > OK, I'll ask.  What does "torque to yield" mean?  If the 
> > explanation is
> > too long, feel free to tell me to go fish.
> > 
> > --David Boyd, boydd@domain.elided
> > '84 325e 200k
> 

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