miles2102 Posted February 26, 2015 Share Posted February 26, 2015 Thought I'd give my diff a change out this weekend and wondered if there's any way of knowing if I have the right diff for my car without having to jack all 4 wheels (tried it but failed miserably as I haven't got the lifting gear for the job). Is there any markings anywhere all I don't wanna pull my diff off to find I have the wrong one. Thanks in advance Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted February 26, 2015 Share Posted February 26, 2015 Just google the gearbox "ty......" number of the white sticker near the starter motor and find the ratio . On classics if you have single pot rear calipers as standard the diff type will be R160 If you have 2pot rear calipers as standard your diff type will be R180 My bet for a early wrx would be shorter jdm ratio with a R160 type diff [emoji6] Quote Link to comment Share on other sites More sharing options...
miles2102 Posted February 26, 2015 Author Share Posted February 26, 2015 Right so Ive checked my gearbox code and it showing I need a 4.11 rear diff which I thought was correct anyway so I'm happy with that part but how do I tell if the rear diff that's sat on my garage floor is a 4.11, I was assured it is but rather be safe than very sorry? Cheers for the info as well I feel like I'm nearly there with it just need to clear up and make sure it's definitely the right diff Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted February 26, 2015 Share Posted February 26, 2015 I'm unsure how to tell by looking at them tbh . I've only ever had the longer 3.5.4 uk ratio diffs . Maybe sombody else will know if there's any markings on the outter casings saying what ratio and type of diff they are Quote Link to comment Share on other sites More sharing options...
miles2102 Posted February 26, 2015 Author Share Posted February 26, 2015 I know you can do the old mark it and turn it to find ratio which now I know it needs to be 4.1 so I might check that on the diff in the garage Quote Link to comment Share on other sites More sharing options...
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