[s-cars] RS2 Manifold Head Studs - 10.9 Hardness

[MLP]

What's your local dealer suggesting is the appropriate "price" for these? In
my personal experience,  the turbo to downpipe studs & nuts via the dealer
are rather costly parts.  As I recall, @ 3 years ago I think, the dealer was
asking something like @ $10+ each - @ $80+ for four nuts with studs.  As Mae
West would say, don't loose or abuse your studs, or nuts .....  

BTW, the parts desk justification for the cost was, "These must be made of
very special stuff...."  I know the nuts at least, are a special copper
colored steel, but I couldn't get anyone to tell me, or even guess what that
might mean.  As an alternative I tried going to a specialty fastener shop in
Denver.  Their catalog listed a few, pretty costly but no where near as dear
as the Audi dealerships, aircraft spec nuts for high temperature
applications.  They had no listings however for studs in any special high
temp steel application - maybe such things don't exist.

mike

> -----Original Message-----
> From: s-car-list On Behalf Of Sean Douglas

> I'm currently pricing the hardware for the re/re of the turbo 
> and EM manifold in preparation of the RS2 upgrade. It appears 
> all parts are available from a local dealer except the 
> shorter studs. The recommended shorter stud is 8x27 mm (N 906 
> 486 01) is not available in North America, but a slightly 
> longer one 8x28mm with a 10.9 rating is available (N 044 410 
> 4). Does anyone know if the 10.9 hardness is suitable for 
> this application?
> 
> Thanks,
> 
> Sean Douglas
> 1997 Audi S6 - MTM Stage 1+
> 1990 Audi 90Q20V
>