[Es2] V8 torsen rear diff on coupe S2
Elijahallen92 at aol.com
Elijahallen92 at aol.com
Mon Jun 20 20:14:22 EDT 2005
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 would
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 these?
There have been so many custom group buys lately I thought maybe someone would
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
- 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 diameter
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 out.
Ofcourse it will be better to replace the V8 O-ring with a new O-ring. Just
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 swap
them around. So S2 crown wheel onto the V8 Torsen Diff. Retighten the bolts
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 surface
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 to
swap his diff. If you do this swap, use your common sence and check every
step for yourself.
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