[Vwdiesel] Head studs

[gary]

I agree with the "should work" vs. "designed to work" and only saving
$25 comment.

My question is: Does ARP change the thread pitch in the nut area vs. the
block area?

RaceWare uses a finer pitch in the nut area. Makes torquing a
real-smooth event! I.E., you don't have to grit your teeth and make
funny faces while torquing.

-Gary


On Wed, 2004-10-13 at 16:50, Gary Shea wrote:
> I've been doing a bit of research on head studs for a 12mm head.
> 
> They are about $180/set at Raceware.
> 
> ARP doesn't have a set specifically for the VW diesel but they have a
> set that "should work".  I gave them the following information:
> 
> head thickness: 3.1
> from deck surface to first thread: .5"
> deck surface to bottom of hole: 1.72"
> thread spec: 12mm, 1.75mm pitch
> gasket thickness: .068" (rough measure with cheap caliper)
> available land for nut, washer: .82"
> 
> I talked to Mike Rose 805 525 1497 x203 at the ARP factory.  They
> would recommend a 5.4" stud, but they have a 5.75" stud for a Cummins
> that should work.  This is a 200000-something strength material, unlike
> studs for the cars which are at 175000-something.
> 
> The total price on this stud is:
> 
> 12.90   stud
>  4.47   nut (.502" tall)
>   .81   washer
> 
> 18.18  total
> 
> 15.45  with 15% off "jobber rate" which we can apparently ask for and get
> 
> The model number is AU5.750-2LB
> 
> I think this would fit my '85 Quantum TD engine nicely, since we've got
> room to torque the bolts with the engine on.  I'm not looking at a head
> right now though, so any feedback welcomed.
> 
>         Gary Shea
>         Salt Lake City
>         801 487 8589
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