RE: stronger exhaust manifold studs?

[Don Muirhead <dmr@kwic.com>]

Marc:

I found a couple studs broken on my coupe last weekend and picked-up a 
handful from the Dealer today.  The ones I grabbed today are the same as 
the ones that were replaced under warranty 13 years ago and at only a $0.75 
ea. (CDN).  So I'm not going to worry about the studs breaking for at least 
10 years.  But that's only my opinion and my $0.75

Don

-----Original Message-----
From:	Fred Munro [SMTP:munrof@isys.ca]
Sent:	Friday, September 17, 1999 8:46 PM
To:	Marc A Swanson; quattro@audifans.com
Subject:	Re: stronger exhaust manifold studs?

Marc;

    You could try to find some 8 mm supertanium grade (grade 12) bolts and
make your own studs. These bolts have higher tensile strength than the more
common grade 5 or 8 bolts.
    Don't bother with stainless steel; unless it is one of the duplex
stainless steels(which are not very common yet in North America), it will
likely be weaker than grade 5 steel.

HTH

Fred Munro
'91 200q  281k km
----- Original Message -----
From: Marc A Swanson <mswanson@cisunix.unh.edu>
To: <quattro@audifans.com>
Sent: Friday, September 17, 1999 6:35 PM
Subject: stronger exhaust manifold studs?


> I called up ARP today(www.arp-bolts.com)because amongst other things I
> wanted to get replacements for the EM studs, but ARP said that they don't
> make any studs smaller than 10mm thread...  The EM studs are 8mm, and I
> really want to avoid getting these from the dealer because they seem
> weak.  Anybody know where I can go to get good strong replacements?
>
>
> Also, What about the head studs and connection rod bolts?  Family
> Pictures lists the
> head bolts(I think I want to use studs instead.. comments?) as M11X1,5X96
>  which I decipher as 11mm thread and 96 mm long(anybody know what the
> middle # is for?).  96mm seems a bit short to me.. is this correct? 
 Also,
> Family Pictures lists the connecting rod bolts as M9,5X1F which I can't
> make heads or tails of.  Can anybody shed somome light on this?  Any 
other
> bolts/studs in the motor that I should replace while I'm there?  I would
> just measure these myself, but the motor is at the shop and I haven't
> found time to get there.
>
>  Thanks
> -Marc-
> 87 4kcsq awaiting turbo
> 87 5ktq  donor
>
>