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Why a rear factory LSD will not work in the front...


WJM
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...the rear unit is physically SMALLER.

 

Both bearings are in difffrent locations.

The rings will not interchange due to different bolt pattern (8 bolts rear, 12 bolts front).

I am sure the stubs will not interchange.

I am sure there are more items, however, i did not go beyond comparing the units side by side....

 

In order to make the rear unit work in the front, EXTREME machining modifications will need to take place.

 

[TEASE]It would be alot cheaper and easier to............................[/TEASE]

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...the rear unit is physically SMALLER.

 

Both bearings are in difffrent locations.

The rings will not interchange due to different bolt pattern (8 bolts rear, 12 bolts front).

I am sure the stubs will not interchange.

I am sure there are more items, however, i did not go beyond comparing the units side by side....

 

In order to make the rear unit work in the front, EXTREME machining modifications will need to take place.

 

[TEASE]It would be alot cheaper and easier to............................[/TEASE]

 

put the phantom grip in?

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  • 4 weeks later...
Ok, so what manufacturer makes an LSD for the front of an EA82 transmission?

 

Go find one for a Legacy or a '93-'01 Impreza and it should fit. Will did another article on how EA82 front diffs and EJxx front diffs are exactly the same right down to the part numbers.

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Cusco and Kaaz manufacture aftermarket clutch type LSDs.

Quaife, Torsen, and OBX (ugh) manufacture gear type ATB differentials.

 

Everybody but torsen makes front diffs for the aforementioned EA/EJ cars. I'll say that gear type LSDs in a front drive application are heavenly. I have a Quafe in my front driver and the operation is completely transparent. You'd think it was an open diff till you put the hammer down at which point it immediately redistributes power appropriately.

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