[Vwdiesel] Retorquing ARP racing studs

[brian gochnauer]

Fine thread, coarse theard, is realy no use.
Mathmatically certanity is not that obtuse.

If you have the facts, for each of the studs.
Then calculations should give birth to both of the duds.

Oh well thats the best I could do.
ARC can give the max torque their studs would take.
Do they give specific manufacture/engine specs, for YOUR engine?



On 1/31/09, James Hansen <jhsg at sasktel.net> wrote:
>
> To torque or not to torque.
> That is the question...
> Alas, when man instill his fair steed with new gasketry, doth the gasket
> nay compress yet more?
> To compress, yet not have allowance for such compression doth seemly
> convey leakage past yon ill compressed gasketry.
> Retorque I must, but only to spec.
> For here, spec be a reflection of FINE thread and clamping forces not
> attainable by mere coarse threaded fasteners of dubious origin, plastic
> in nature, and length defined by the whim of the installer.
> Should good workmanship involve reading the manual for which fine ARP
> product did spring, final torque values may be produced, reflective of
> proper clamping force for such threadform.
> And now, I must bid adieu for the nonce.
> To live is to wrench.
> -james
>
> William J Toensing wrote:
> > Good discussion as I am using them in my Quantum turbodiesel. ARP
> > recommends torque to 80 pounds if using their specialized assembly
> > lube or 120 pounds if using 30 weight oil. I am using the ARP
> > provided lube & tightened in 10 pound stages until I reached their
> > recommended  80 pounds. Am still finishing the assembly & hope to get
> > the engine running tomorrow. Seems to me on my Dasher, they
> > recommended a retorque when warm & again when cold but no such
> > recommendations with this set of ARP studs so looking forward to more
> > comments. It is my understanding that you follow the ARP
> > recommendations, not the VW Bentley recommendations which use the
> > twist to yield bolts. When I took out the old VW head bolts, one
> > yielded at only 60 pounds & several took 120 pounds to break loose.
> > If I recall correctly, the Bentley recommends torque to 43 pounds &
> > then a 180 degree then or two 90 degree turns. Wonder what that
> > brings the effective torque to? Bill Toensing, Nevada City, CA
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