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Old 12-05-2009, 06:32 PM   #1
Leonardo
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Default Any front LSD that would fit the 5EAT found in the 05-09 LegGT?

Trying to locate if there is any LSD that would fit the front of the 5EAT.

TIA,
Leo
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Old 05-13-2010, 11:06 PM   #2
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Bump, also lookin for some sort of 4EAT or 5EAT front LSD option
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Old 05-13-2010, 11:20 PM   #3
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Do the 4EAT and 5EAT use the same front differential? I can help you get your hands on one for the 4EAT.

I'll check with my local dealer tomorrow and see if the part number is the same for both gearboxes. Or maybe someone will know the answer.
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Old 05-13-2010, 11:31 PM   #4
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Who makes a front LSD for the 4eat?
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Old 05-13-2010, 11:53 PM   #5
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Matt, keep me updated please!
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Old 05-14-2010, 12:04 AM   #6
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Quote:
Originally Posted by g00fy View Post
Who makes a front LSD for the 4eat?
I believe that Modena makes one for the 4EAT. I'll double check that though.
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Old 05-14-2010, 12:19 AM   #7
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Quote:
Originally Posted by FlatironsTuning.com View Post
I believe that Modena makes one for the 4EAT. I'll double check that though.
Hey, there's my local dealer guy. Can you find out if the 5EAT uses the same original open diff as the 4EAT? If so, it's will work in both...
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Old 05-14-2010, 10:17 AM   #8
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Originally Posted by FlatironsTuning.com View Post
I believe that Modena makes one for the 4EAT. I'll double check that though.
If this is true, i'll buy one right now...
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Old 05-14-2010, 10:38 AM   #9
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Found this old post: http://forums.nasioc.com/forums/show...=218704&page=2 looks like modena did make it happen at one time, don't know if they still make them or would still make them.
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Old 05-14-2010, 11:49 AM   #10
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Quote:
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Hey, there's my local dealer guy. Can you find out if the 5EAT uses the same original open diff as the 4EAT? If so, it's will work in both...
I got in and checked, and I am going to guess that they are not interchangable. Subaru doesn't list a complete differential, so you have to look at all the parts seperately.

Everything looks to be the same except the case. It is split into left and right sections, and the left is listed for both the 4AT and 5AT. However, the right is a different part #, and the bolts to connect the two halves are different part #'s as well.

Other than that, everything inside is the same....

My guess is that the 5AT is slightly wider, etc...
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Old 05-14-2010, 12:20 PM   #11
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Quote:
Originally Posted by g00fy View Post
Found this old post: http://forums.nasioc.com/forums/show...=218704&page=2 looks like modena did make it happen at one time, don't know if they still make them or would still make them.
They exist. Guess what will happen if you send an email to the address listed in that thread.

Flatirons Tuning will have them on their website before end of business today.
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Old 05-14-2010, 05:19 PM   #12
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Wait, they have them for the 4EAT, the 5EAT or both??

What half is the same?

Last edited by Leonardo; 05-14-2010 at 05:24 PM.
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Old 05-14-2010, 05:23 PM   #13
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Here is the one from the 5MT on the left and the 5EAT on the right.





From this thread:
http://legacygt.com/forums/showthrea...nd-134603.html
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Old 05-14-2010, 06:06 PM   #14
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The one that is available is for the 4EAT. The question noone knows the answer to is whether or not it could be made to fit in a 5EAT.

Looks at the picture on Flatirons Website. It looks like the one on the right, but it's not as "thick". If the axle to axle distance hasn't changed the parts may be interchangeable. I say this because according to Flatirons, the left side (ring gear side) is the same part, which suggests the backlash on the ring gear is the same on both of them. If the right side is different that's a dimensional change that my not be relevant. The placement of the ring gear is the important part.
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Old 05-14-2010, 06:08 PM   #15
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Here,
It looks like he's added a picture to his vendor forum thread:
http://forums.nasioc.com/forums/show....php?t=1954153
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Old 05-14-2010, 07:36 PM   #16
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Quote:
Originally Posted by Leonardo View Post
Here is the one from the 5MT on the left and the 5EAT on the right.





From this thread:
http://legacygt.com/forums/showthrea...nd-134603.html
From looking at this picture, I would say that the part that is different is the one that the ring gear is actually bolted to (right according to Subaru?). Since the bolts for the 4AT were different than the 5AT, my guess was that the 5AT was thicker, and from looking at that picture, that would put the ring gear in an improper alignment... I might have to order both bolts just to confirm.
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Old 05-14-2010, 08:09 PM   #17
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Just adding my 2 cents, you can't interchange 4at 5at diffs. They don't fit. Let me elaborate..the pinion shaft setup is totally different on 4at/5at.
I've yet to se a factory front lsd on an automatic.cheers.
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Old 05-14-2010, 08:35 PM   #18
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If anyone reading this thread has a 5EAT apart and the differential out of it, I'd be interested in talking to you. PM me if you would consider sending your differential to me for a few days. If someone can do this, I can put an end to the debate for sure.
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Old 05-14-2010, 11:24 PM   #19
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Go to the LegacyGT.com link I posted. the pic is from one of the members that has just that, a spare open 5EAT. I linked to this thread so he might post here but read that thread.
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Old 05-15-2010, 12:47 AM   #20
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OK. I'll check it out in the morning. And if there's not a way that I can make the 4EAT version fit, I can make a 5EAT version if there's enough demand. It's just a question of whether or not there's actually a market for it, and if people are willing to pay what Modena parts cost to make.
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Old 05-15-2010, 12:57 AM   #21
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Anyone have first hand experience with the 4EAT one? I bet it would do wonders for my XT, it has the 90/10 split with the MPT transfer clutch. So that means tons and tons of front wheel spinning on launches.
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Old 05-15-2010, 01:02 AM   #22
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The 4EAT version is a US market exclusive product. It's never been sold anywhere else to my knowledge and of the initial production run made about half a dozen years ago only maybe 5 or 6 of them were ever sold and installed in cars. The odds of finding someone with one in their car is low, but with 1/4 million members if you're gonna find them, it's gonna be here on NASIOC.
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Old 05-15-2010, 01:22 AM   #23
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I did find someone who had one on his high HP 04 WRX, but he hasn't posted in over 6 months...I believe the 4EAT WRX's have the 45/55 split too...so I'd like to think it would help me more than him.
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Old 05-16-2010, 01:05 PM   #24
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Anyone have first hand experience with the 4EAT one? I bet it would do wonders for my XT, it has the 90/10 split with the MPT transfer clutch. So that means tons and tons of front wheel spinning on launches.
Don't worry man gimme like 3-4 weeks and i'll let you know how it is, and if we get together at a meet i'll take you for a ride.
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Old 05-17-2010, 03:29 PM   #25
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Ordered my Diff today, hopefully i'll have it installed within the next 3 weeks.
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