[Es2] Re: V8 torsen rear diff on coupe S2
Elijahallen92 at aol.com
Elijahallen92 at aol.com
Tue Jun 21 19:27:11 EDT 2005
I know the directions aren't complete but in the same forum that I copied
the directions from there are answers and info on how it all works. For those
who are not on the s2forum.com list, get there and read, they are the same as
us and between the two we pretty much have all the angles figured out.
In a message dated 6/21/2005 6:06:05 PM Eastern Standard Time,
b.benz at charter.net writes:
I'm a Digest lurker on this es2 list, but can't lurk without comment about
your subject "how to" swap instructions. Are you not mixing parts from two
different shim matched assemblies without mention of the absolute necessity
for reshimming? Check the final drive assembly procedures in any Bentley!
This is no simple task, and absolutely essential to the successful overhaul
of any Hypoid final drive.
> Message: 1
> Date: Mon, 20 Jun 2005 20:14:16 EDT
> From: Elijahallen92 at aol.com
> Subject: [Es2] V8 torsen rear diff on coupe S2
> To: es2 at audifans.com, billzcat1 at hotmail.com,
> contact at euro-audi-parts.com
> Message-ID: <a0.2acde754.2fe8b5d8 at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
> Ok guys, this seems like a very good upgrade for our cars, especially the
> ones making big power because of wheel spin coming out of corners. This was
> posted on the S2 forum and the directions look pretty straight forward. I
> like to do this but don't have time and or the right equipment/knowledge to
> feel comfortable doing it. Anyone out the want to whip up a batch of
> There have been so many custom group buys lately I thought maybe someone
> like to do this one.
> Here's a small how-to on swapping the open S2 diff for a V8 torsen one.
> I'll start this at the point where you have both diffs in front of you on
> the bench.
> - Drain all the oil from both diff's
> - Remove both the driveshaft flanges from both diff's
> - Remove the casing-cover that sits behind the driveshaft flange, on both
> diff's. That casing is bolted to the diff housing itself with 9 bolts.
> - Remove both diffs out of it's housing
> - Then remove the O-ring seal at the far end of the diff housing from both
> the V8 diff and S2 diff.
> The reason for that; is that one of the two driveshaft flanges from the S2
> is different then from the V8. The V8 driveshaft flange has a thicker
> at the point where it seals with the O-ring. We need the V8 driveshaft
> flange eventually on the S2 diff housing.
> These O-rings are metal, and are pressed in the diff housing. They can be
> removed by driving them out with a pendriver and a hamer from the inside
> Ofcourse it will be better to replace the V8 O-ring with a new O-ring.
> make sure its not damaged if you use it or dried out.
> - Press the V8 O-ring in the S2 diff housing. You will notice that the
> inside diameter from the V8 O-ring is bigger then the S2 O-ring.
> - Passing on to the diffs itself.
> - Remove the crown wheels from both diff's (bolted with 10 bolts). And
> them around. So S2 crown wheel onto the V8 Torsen Diff. Retighten the
> at xx NM (will need to check what NM's I tightened the bolts)
> - Drop the V8 Torsen diff in its new S2 housing
> - Make sure all bearings are clean. Apply some liquid gasket on the
> where the casing-cover meets the diff casing. Then put the casing-cover to
> close the diff again.
> - Retighten the 9 bolts
> - Mount the V8 driveshaft flange on the side were you swapped the O-ring
> And on the other side IIRC the S2 driveshaft can be fitted.
> - retighten the bolts from both shaft flanges
> - Check if there's any play on the diff bearings and that it turns easily
> - Fill the diff with some fresh oil. And check for leaks.
> - Get it back under the car asap!! And while you're at it, throw in a
> powerflex diff rubber aswell.
> Enjoy some sideways actions!!
> I'm not responsible if there's a failure because someone used this method
> swap his diff. If you do this swap, use your common sence and check every
> step for yourself.
> Cheers guys!
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