Strange LSD problem

Alex · #1 (**permalink**) 07-02-2008, 03:02 AM

Last year I submitted this thread about the installation of a Berlina LSD into my Sprint GT. After installation I noticed that there was a problem ...

Quote:

So eventually the wheels go back on and .... bugger! There's just a little lateral play in the outer wheel bearings. Not enough to worry about immediately, but in the next couple of weeks I'll have to remove the halfshafts once more and carefully shim these bearings with a purpose-made dense fibre ring just inside the opening to the half shaft tube.

**Alfar7** · #2 (**permalink**) 07-02-2008, 05:48 AM

The LSD is not set up correctly.

Alex · #3 (**permalink**) 07-02-2008, 05:58 AM

Richard,

Would you mind expanding on that?

Alex.

crashmctavish · #4 (**permalink**) 07-02-2008, 10:14 AM

I too am curious on this one. I replaced the 1/2 shaft bearings 2000 miles ago & already there is play in them. Granted I drive hard but did not expect this. Yes mine is a 2l LSD unit. 40K miles from new & never been tampered with.

crashmctavish · #5 (**permalink**) 07-05-2008, 08:34 AM

Hey Alex do you have an answer on this one yet?
Shimming with fibre cant work, are you sure the bearings are the correct size.
Come on BB any takers for this one?

Alex · #6 (**permalink**) 07-06-2008, 04:14 PM

Hmm ... still no takers for this one.

I've checked my notes and examined the factory rebuild guide which Papajam sent me last year (thanks again Jim!) and I cannot see anything obvious which I could have done wrong. All the service parts were from Alfaholics and I paid for the better quality bearings, too. Maybe Max and/or RJR could offer some thoughts here?

Alex.

chrisgpj1c · #7 (**permalink**) 07-13-2008, 12:30 PM

Hi Alex,

With the LSD, the inner splined end of the driveshaft fits into the clutch plates in the LSD unit.These plates float until the diff is under load during cornering or hard acceleration or braking. That's the way the unit was designed, and is perfectly normal.

Chris

**Alfar7** · #8 (**permalink**) 07-13-2008, 01:09 PM

Without a lot of complicated detail, there is too much play between the drive cones and the clutch/disk packs holding them in place. There should be only a total of .004 (total clearance both sides) clearance on a street set up even if using 4 disk (2 clutch disk per side). Both the clutch and housing disk are available from .082 to .075 to set the units correctly.
That better than "It ain`t right"?

alfacorse1965 · #9 (**permalink**) 07-22-2008, 06:12 AM

I have read when instaling my LSD axle in RTA (Revue Tehniche Automobile-France) that if this kind of play appears you need to put shims behind the wheel bearings.In my case I used SKF bearings and I haven't notice any play until now-just a leeak betwen axle and diff case-I have put sealant when I put it toghether but a small amount because I opened a original axle and I don't seen any sealant at all.
Hope it helps you.