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  #1  
Old 12-07-2005, 11:25 AM
SVX_Smoke_Out SVX_Smoke_Out is offline
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Is there any diff from other FWD trannys that will fit ares?

Ok i have two trannys that both need the ring and pinion gear set which are parts that are discontinued. But is there any other car that has the same diff that wiil fit are tranny? Or does any one know of a ring and pinion gear set that would fit are tranny?

Last edited by SVX_Smoke_Out; 12-20-2005 at 02:52 PM.
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  #2  
Old 12-07-2005, 11:52 AM
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The SVX is th eonly Subaru that had a 3.54 front diff...

but any of the other 4EAT Subie trannys ring and pinion will fit in the SVX tranny, but you'll need a matching ring and pinion for the rear diff as well...
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  #3  
Old 12-07-2005, 12:00 PM
SVX_Smoke_Out SVX_Smoke_Out is offline
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ok im just starting to learn all this stuff were is ther rear diff located at and how much do think it would cost to go that route. So what your saying is that if i get the ring and pinion for my tranny from a 4EAT then i have to also change my rear diff even if im FWD.
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  #4  
Old 12-07-2005, 12:07 PM
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Quote:
Originally Posted by huck369
The SVX is th eonly Subaru that had a 3.54 front diff...

but any of the other 4EAT Subie trannys ring and pinion will fit in the SVX tranny, but you'll need a matching ring and pinion for the rear diff as well...
One question Huck. Doesn't the new B9 Tribeca use a 5EAT with 3.545 gears? I thought the rear diff in that car was also an R160 which would be a direct bolt-in to our cars (however the rear diff from a Tribeca would cost a lot more than one from an older SVX).

-Chike
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  #5  
Old 12-07-2005, 12:09 PM
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Quote:
Originally Posted by SVX_Smoke_Out
ok im just starting to learn all this stuff were is ther rear diff located at and how much do think it would cost to go that route. So what your saying is that if i get the ring and pinion for my tranny from a 4EAT then i have to also change my rear diff even if im FWD.
If yours is a FWD, then, no you just need a ring and pinion for the front, but you can pick up a whole FWD Legacy/Impreza Tranny fairly cheaply, which would be easier to swap in then just the ring and pinion....
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  #6  
Old 12-07-2005, 12:12 PM
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Quote:
Originally Posted by Chiketkd
One question Huck. Doesn't the new B9 Tribeca use a 5EAT with 3.545 gears? I thought the rear diff in that car was also an R160 which would be a direct bolt-in to our cars (however the rear diff from a Tribeca would cost a lot more than one from an older SVX).

-Chike
Didn't know that about the Tribeca, but he's needing a front diff ring and pinion, which I'm sure the 5EAT will be different than the 4EAT's....
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  #7  
Old 12-07-2005, 12:28 PM
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Quote:
Originally Posted by huck369
Didn't know that about the Tribeca, but he's needing a front diff ring and pinion, which I'm sure the 5EAT will be different than the 4EAT's....
Yeah, the new Tribeca's come will the tall 3.545 ratio! Hope the new owners install a good trans cooler.

You're right though, the front diff from a 5EAT wouldn't work.

-Chike
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  #8  
Old 12-07-2005, 01:52 PM
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Well i already have both trannys apart and i have a mechanic who well help me install the ring and pinion for free so i was going to just try to get the gears or the casing and the gears. So a 4EAT diff will fit to are tranny right
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  #9  
Old 12-07-2005, 02:08 PM
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Yes,
The front Diff from a 4EAT out of a Legacy/Impreza/Forester/SVX from 90-98 will fit on the SVX Tranny...the newer than 98 may work, but I don't know for sure..
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  #10  
Old 12-20-2005, 02:52 PM
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Is the gear ratio on the ring and pinion out of a 4EAT different than are trannys and if so what can that cause?
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  #11  
Old 12-20-2005, 04:09 PM
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Quote:
Originally Posted by SVX_Smoke_Out
Is the gear ratio on the ring and pinion out of a 4EAT different than are trannys and if so what can that cause?
The SVX tranny is basically the Same 4EAT that was used in all the Subaru lines during the production run...
No, the ring and pinion are different in the SVX, and if you use the front diff (or whole tranny)out of another Subaru, you ALSO have to swap the rear diff ring and pinion to match the tranny that will be used....

Hope this helps to clear it up...
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  #12  
Old 12-20-2005, 05:04 PM
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Quote:
Originally Posted by Chiketkd
Yeah, the new Tribeca's come will the tall 3.545 ratio! Hope the new owners install a good trans cooler.



-Chike
I'm pretty sure subaru learned their lesson and have made the cooling more than good enough.
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  #13  
Old 12-20-2005, 07:16 PM
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Ok, if you have a FWD transmission you can put ANY 90-98 Subaru front differential in it. 3.54/3.70/4.11/4.44 whatever floats your boat. not having to worry about a rear diff makes your choices much more numerous.

Tom
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  #14  
Old 12-20-2005, 10:49 PM
SVX_Smoke_Out SVX_Smoke_Out is offline
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Ok so being that they are a different gear ratio what would be the better one to get or doesnt matter

Last edited by SVX_Smoke_Out; 12-20-2005 at 10:53 PM.
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  #15  
Old 12-21-2005, 05:29 AM
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Quote:
Originally Posted by SVX_Smoke_Out
Ok so being that they are a different gear ratio what would be the better one to get or doesnt matter

Depends on what you want, and your driving style...

the bigger the ratio number #4.44 gives you the best accelleration from a stop (best for drag racing) but you lose some top end (but who drives
very often anyways ) easiest on the tranny

4.11 is a good co-promise of better take off and not losing much up top

3.90 is a little harder to come by, but is the closest ratio to the Stock SVX one.

3.54 is the Stock ratio for a SVX and is geared more toward highway cruising, really hard on the tranny in stop and go driving...this is the highest ratio that Subaru has offered.

For myself, if I were changing mine, it would be for the 4.44's as most of my driving is around town anyway, and it makes the car Feel much faster, and lighter than it is.
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