8.32 differential cover mystery

[Ken H]

This is not strictly a Delta question, however the Delta Integrale transaxle is very similar to mine so I'm hoping someone can shed some light on the mystery below. My transaxle is a C.503.5.29 which is for a Thema 8.32 (Ferrari engine). I bought it indirectly from Fiat and don't know its history.

The openings where the half shafts exit are supposed to be chamfered to provide a seat for the O-ring on the differential casing cover. On mine, the differential cover has no chamfter on the engine side, although it does on the gearbox side. See the attached picture.

http://www.lancisti.net/albums/album41/transaxle_chamfer_sm.sized.jpg

Opinions/comments/theories, anyone? A lapse in Fiat/Lancia quality control?

- Ken

[Wallace]

Could be. Or that Fiat decided they could get away with using just sealant on the casing cover . . . .so save the cost of an o ring and machining !!!

Try just using something like Hylomar - it's above the level of the oil in the box so "shouldn't" leak . . . . !l

[Will]

Can't you just bolt the turbo exhaust flange onto it and be done with it??
I'll send Mike Ross over to your house with a die grinder, he'll have it done in a Jif!
-Will
(Inside joke, guys- sorry if you didn't get it!)

[Ken H]

Can't you just bolt the turbo exhaust flange onto it and be done with it??
I'll send Mike Ross over to your house with a die grinder, he'll have it done in a Jif!
-Will
(Inside joke, guys- sorry if you didn't get it!)

Yeah I was thinking about getting Mike's help, but he'd take my bearings apart and only put back 19 rollers! As Mike would say, "yuk yuk yuk.."

Solution? A new (well, used actually) differential cover, courtesy of Bazza.

- Ken

[Will]

Ken, do you think one part is for a standard open diff and the other part is for the viscous-drive 'grale LSD?
While I'm on the subject, does anyone have a dimensioned tech drawing on the torsen-type REAR Integrale diff? I'm wondering if it could be adapted to fit the beta box setup.
Ken, any ideas? I'm in the dark here...
-Will

[Ken H]

Ken, do you think one part is for a standard open diff and the other part is for the viscous-drive 'grale LSD?
While I'm on the subject, does anyone have a dimensioned tech drawing on the torsen-type REAR Integrale diff? I'm wondering if it could be adapted to fit the beta box setup.
Ken, any ideas? I'm in the dark here...
-Will

Will,

I don't have experience with the 'grale diff so can't say. However Barry W. didn't know either and I'm sure he'd be able to identify it if that's what it was. Personally I think it's just a manufacturing defect. Sorry can't help on your other Integrale question either...Barry?

- Ken

[Bazza]

While I'm on the subject, does anyone have a dimensioned tech drawing on the torsen-type REAR Integrale diff? I'm wondering if it could be adapted to fit the beta box setup.
Ken, any ideas? I'm in the dark here...
-Will

Will - the Integrale Torsen is quite bulky and I very much doubt that you could fit it in the space available. Quaife list a Torsen type diff for the Alfa 164 which is very similar to the Beta final drive - may be worth contacting them to see.

[Will]

Barry- Great idea! I have a 164 box here (ZF automatic) and looks about the same size casing, and output shafts- the 164 uses an electronic speedo sender, so I have to investigate that detail, but GOOD TIP! I'll let you know what I find.
-Will

[Ericl]

Im just aboute to try to fit a integrale rear torsendiff in a Fiat croma gearbox.
The first problem is the splines in the diff. They are bigger than the ones on the Croma. So special shafts has to be made.
I have not yet striped down the croma gearbox but is looks as if the integrale diff is to big.
I'll let you know when I have an answer.

Is there any model of fiat or Lancia gearbox that has a diffbreak?
I know the Fiat coupe has an external silicon diffbreak.

I need a diff break for my racecar and for my future monte with ferrari V8

Best regards
Eric Lycke

[Hamish]

Eric,
I don't know if what I'm about to suggest will help, but I suggest you try having a look at the forum on www.stratossupersite.com these guys (mainly) build Stratos replicas and as each replica is essentially a home built item the engineering solutions to problems such as yours might find an answer amongst the gurus on that forum :?: Mainly because most of the replicas run Fiat/Lancia/Alfa engines and diffs.... ergo you should get an answer :wink:
Good luck anyway 8)

[Ken H]

Eric,

Suggest you investigate the Quaife limited slip diff as Barry mentioned above.

http://www.quaife.co.uk/index2.htm

The Alfa 164 version should fit or at least be adapatable to your 8.32 transaxle. This is the "torsen" style diff, which has advantages over the friction plate style.

Let us know how the 8.32 project goes, and maybe post a few photos as you go.

- Ken

[Ericl]

Hello
Thank you for the info.
Im currently checking with two suplyers of differentials.
Yes I will send pictures of the monte-carlo as the project goes along.
Im not going to start until the fall. So pictures shoud be available in the spring.

Now I have to put all my time on the racecar.

Best regards
Eric Lycke

[Ericl]

Hello
The rear integrale torsendiff does not fit in a fiat croma gearbox.
Quife does not make the torsendiff for the Alfa 164 anymore.
Maybee somebody here has one fore sale?

Best regards
Eric Lycke