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  #1  
Old 03-16-2012, 10:04 AM
poweredx2 poweredx2 is offline
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need fwd diff 3.70 gear ratio

Just started back driving my svx and got a terrible clunk while driving replaced both axles so I know my diff is gone also its a fwd svx
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  #2  
Old 03-16-2012, 10:32 AM
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icingdeath88 icingdeath88 is offline
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Re: need fwd diff 3.70 gear ratio

Why not do an AWD swap?

It's quite a bit easier to replace the whole trans than just the diff.
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Old 03-16-2012, 11:36 AM
poweredx2 poweredx2 is offline
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Exclamation Re: need fwd diff 3.70 gear ratio

Just putting my svx on the road no more racing that car.I have a low 13 v6 genesis coupe a.d a low 12 crossfire srt6 so I got my share of odd toys. Just keeping the svx because its still a headturner
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Old 03-16-2012, 09:48 PM
1986nate 1986nate is offline
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Re: need fwd diff 3.70 gear ratio

Are you opposed to anything other than the stock FWD 3.70? Any gear front diff will work FYI. And since you only need a diff, you can look around for FWD impreza/legacy transmissions as well. Those have a 3.90 but still should be nice cruising on the highway.
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Old 03-17-2012, 04:42 AM
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Re: need fwd diff 3.70 gear ratio

I forgot about that thanks for reminding me on that one I will check that any year fwd legacy.
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  #6  
Old 03-17-2012, 05:27 AM
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Re: need fwd diff 3.70 gear ratio

This search may be just as long so far I can only find the legacy rear diffs on ebay.I will do a broader search after work.
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Old 03-17-2012, 06:08 AM
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Re: need fwd diff 3.70 gear ratio

With a 3.90 and some sticky tires you may just beat your own 1/4 mile record!
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Old 03-17-2012, 06:19 AM
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Re: need fwd diff 3.70 gear ratio

Just miss driving the car its real solid and a great car even to this day.
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Old 03-17-2012, 08:09 PM
1986nate 1986nate is offline
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Re: need fwd diff 3.70 gear ratio

Typically no one will sell just a front diff from a Subaru trans. Look for a FWD complete transmission. 90-95 FWD legacy will work and 93-95 Impreza FWD. I believe it's only the MT fwd impreza that has the goofy "EA" style axles.
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Old 03-17-2012, 10:52 PM
Tapani Tapani is offline
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Re: need fwd diff 3.70 gear ratio

How did you come to the conclusion that the diff is bad? You mean the carrier is bad or the pinion/crown wheel combo is bad?

Swapping the carrier (if there is a problem with the side/spider gears or their shaft) is straight forward if you are prepared to dig in that far.... if the pinion, its bearings or the crown wheel is bad you enter a stage further down the road of diffculcy.

The tranny needs to come down anyway, but if it is "just" the carrier you may use one from any 4EAT - even a phase 2 and keep you original pinion undisturbed and use the crown wheel too. These are a matched pair and must be used as such.

You might be able to trouble shoot further thru the drain plug....

Kind regards,

Tapani
Attached Images
File Type: jpg diff case split.jpg (253.3 KB, 191 views)
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  #11  
Old 03-18-2012, 08:37 AM
poweredx2 poweredx2 is offline
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Re: need fwd diff 3.70 gear ratio

Ok I found a 95 legacy transmission with diff attached for 500$ and only has 68 thousand miles.What about the tcu is it plug and play if so I will jump on this monday monday morning
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  #12  
Old 03-18-2012, 09:54 AM
poweredx2 poweredx2 is offline
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Re: need fwd diff 3.70 gear ratio

Also I found several fwd manual Transmission 94/95 legacy
Hoping i could just snatch the diff of and bolt it to my tranny any thoughts.
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  #13  
Old 03-18-2012, 11:12 AM
Tapani Tapani is offline
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Re: need fwd diff 3.70 gear ratio

Quote:
Originally Posted by poweredx2 View Post
Also I found several fwd manual Transmission 94/95 legacy
Hoping i could just snatch the diff of and bolt it to my tranny any thoughts.
Look at the photo in my post.... the pinion is supported in the pump casing in the transmission and the carrier is in diff casing. You can not just swap the diff casing and be done with it. The pinion and the crown wheel are a matched pair.

If you have to mess with the pinion it is much easier to swap the whole transmission (including the diff). Also, I understand that the pinion changed a bit around 1994 and the transfer gears at the tail end are not interchangable.

Again - what's wrong with you "diff"? Let's start with that .

Kind regards,

Tapani
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  #14  
Old 03-18-2012, 11:28 AM
poweredx2 poweredx2 is offline
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Re: need fwd diff 3.70 gear ratio

I started feeling a clunky engaging 3 years ago and after that i got a funny sound like a broke axle on the driverside that my telltell sound my diff is gone is was purchase used also.So my best bet is to just go ahead and get the entire legacy tranny, sorry I didnt see your attachment before I s.ee it now.
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  #15  
Old 03-18-2012, 11:34 AM
poweredx2 poweredx2 is offline
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Lightbulb Re: need fwd diff 3.70 gear ratio

Yes I realize that now the dumbness from not driving my svx for a while had me.I will just get that legacy tranny and bookmark this page future purposes.
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