Yeh! Its a mystery, isn't it.

All torque values are there to deliberately put a controlled strain on
the part. To little - no grip. To much, and the tensile strength of the
material is exceeded. You get a permanent deformation and loss of
strength and ultimately failure. It it's cylinder flange hold-down studs
that fail - the potential disaster that could follow  is pretty spooky!
Losing a jug in flight would not be fun. It's bad enough when the cast
aluminum head cracks and separates from the steel cylinder barrel. They
are threaded together - not bolted together. Not good when lug bolts
break under the stain either. I don't ever want to race my wheel down
the road.

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 9/26/2011 12:24 PM, Gary Bawden wrote:
> when it is converted for you,
> it gets down to three significant figures - - go figure!