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Old 04-23-2008, 01:58 AM   #1
Pepo
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Default How to replace rear diff on an 02 wrx?

i have a 2002 wrx that i need to replace the rear differential on. i am replacing it with a stock one. i was wondering if someone could explain to me how this would be done, what tools are needed and what differential fluid you would recommend? my car has 67k miles, but the rear diff will have 80k miles. or if anyone can send me a link to where it explains how this is done.

thanks in advance for your help.

pete
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Old 04-23-2008, 12:03 PM   #2
romanlynch
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uhm 1 this is the engine forum, try the trans forum to get more info

uhm 2 if you havent done this before than i would recommend having someone who's done it help you or take it to a trans shop.
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Old 04-23-2008, 12:20 PM   #3
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Originally Posted by romanlynch View Post
uhm 1 this is the engine forum, try the trans forum to get more info

uhm 2 if you havent done this before than i would recommend having someone who's done it help you or take it to a trans shop.
it's not THAT hard. You may want to have someone with some mech aptitude to help you but I wouldn't spend the money to have someone else do it if it were me.
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Old 04-23-2008, 12:22 PM   #4
romanlynch
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well just make sure that you check the backlash when your done replacing the diff to see if you need to re-shim it.

thats the part that i was referring to being hard if they have never done it before. taking it out and putting the other one in is not hard at all.

btw why put another stock unit in? why not upgrade?
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Old 04-23-2008, 12:27 PM   #5
smurfwrx
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Originally Posted by romanlynch View Post
well just make sure that you check the backlash when your done replacing the diff to see if you need to re-shim it.

thats the part that i was referring to being hard if they have never done it before. taking it out and putting the other one in is not hard at all.

btw why put another stock unit in? why not upgrade?
he's probably like me..... I'm replacing mine w/ another r160 'cuz ALL the stuff you need to swap to an R180 = mucho coin.

I want to do that in the future. Maybe the OP hadn't considered that as an option though?
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Old 04-24-2008, 12:12 PM   #6
romanlynch
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well you can get a quaife or cusco R160 thats a lot stonger then stock

wait, you have tha PPG fury and complaining about the price of an upgraded diff???












im just jealous cause i only had the money for the LGT upgrade......
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Old 04-24-2008, 01:27 PM   #7
MasterKwan
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Sounds to me like he wants to unbolt one whole diff assembly and bolt in an entirely new one which means, lash adjustments shouldn't come into play.

I'd read the manual. You need it for the proper torque settings anyway. Basically the rear suspension comes apart so, you can pull the axles out of the diff, then you unbolt all the bolts and the drive shaft and it falls out the bottom. Then you reverse.
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Old 04-24-2008, 02:42 PM   #8
smurfwrx
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well you can get a quaife or cusco R160 thats a lot stonger then stock

wait, you have tha PPG fury and complaining about the price of an upgraded diff???
It's BECAUSE I got the PPG's that I can't afford the upgraded diff!!!

It's part of my plan down the road but it's not a need at the moment and I'm planning an 18g build so the diff's kind of on the back burner.
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Old 04-25-2008, 12:40 PM   #9
romanlynch
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lol i hear that. my rear diff had some chipped spider gears thanks to the guy before me so i opted to get that, now im waiting to get my clutch and fw and then im doin all that at the same time.
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