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 Post subject: Rx3 diff to Rx7 S3 LSD upgrade Help ?
PostPosted: Tue Aug 15, 2017 10:10 pm 
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Registered Rotor User

Joined: Fri Feb 20, 2015 8:54 pm
Posts: 9
Hey guys .
Is anybody familiar with converting the factory Rx3 diff to a LSD by using the s3 diff centre and axles ? is it a easy swap

I read a massive post a long time ago that stated you can use a rx7 s3 LSD diff centre and the axles should all bolt in without modding ?
I want my rx3 diff to appear factory on the outside but have strengthen internals and i want to be able to run the factory wheels .
I have a spare rx7 s3 diff sitting on the floor . i guess its time to start stripping .

Any help or ideas would be great.


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 Post subject: Re: Rx3 diff to Rx7 S3 LSD upgrade Help ?
PostPosted: Wed Aug 16, 2017 7:43 am 
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Spitting Seals
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Joined: Mon Nov 15, 2010 3:39 pm
Posts: 969
Location: Blackbum, Victoria.
Your RX-3 wheels won't fit the RX-7 axles as the stud pattern is different, and 13 inch Datsun 1600 steelies don't clear RX-7 series 3 brakes. You would be better off finding a 24 spline LSD centre to fit your RX-3 diff.

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green200b, aka Alistair

1981 RX-7 Sport, 12A - daily
1974 Capella RX-2, 13B - cruiser
1982 Hilux, 350 Chev - tow vehicle and 4WD
1980 Datsun 200B - sleeping


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