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R33 Diff Swap

RBceffy25
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RBceffy25 Rising Star

RBceffy25

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As the title implies, is it possible to shim and fit 4.11:1 R33 gtst centre into my A31 Cefio housing?

And if so, would it be beneficial/worth doing?.

Car is to be used for street/daily driver only with around 260rwkw, RB25DET with VCT active.

Current ratio is factory RB20det 4.36:1 behind factory RB20DET 5 speed but plan to upgrade to R33 25det box and diff when i start upping the power.

Any advice would be highly appreciated!

Cheers!

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toffy Veteran

toffy

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iv'e heard a few different stories on this , i know the sungears/lsd fit but i have heard the crownwheel and pinion is slightly different . why not just use the whole 33 diff , it fits fine , all you need is the ceff/r32 back plate and the r33 bolts/rubbers for the front :P .

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RBceffy25 Rising Star

RBceffy25

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I do have the whole diff just sitting there. got it for a steal of a price too!

I was sure i read on a thread on here that it wont fit for some reason i ant remember.

Please explain how it will fit? i.e. Back plate?

Thanks for the info man!

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toffy Veteran

toffy

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ok , the rear housing that bolts to the subframe is different between ceff(r32) and r33 but it's just a simple un-bolt then bolt the one off your diff that your currently using , with r33 they had big rubber bushes(and plates) in the front holes of the diff so you need all of that to bolt in and that's it :)

NOTE: axle stubs , r33 are 5 hole and cefiro are 6 hole (3x2) , i'm pretty sure you can interchange them between diffs (not 100% sure so it might pay to read up somewhere) , but r32 r33 axles all fit if it's not already changed :D

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RBceffy25 Rising Star

RBceffy25

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ok , the rear housing that bolts to the subframe is different between ceff(r32) and r33 but it's just a simple un-bolt then bolt the one off your diff that your currently using , with r33 they had big rubber bushes(and plates) in the front holes of the diff so you need all of that to bolt in and that's it :D

NOTE: axle stubs , r33 are 5 hole and cefiro are 6 hole (3x2) , i'm pretty sure you can interchange them between diffs (not 100% sure so it might pay to read up somewhere) , but r32 r33 axles all fit if it's not already changed :)

I have read around a bit that all or most R200 stub axles will work. allegedly they are all interchangeable.

So it would be a matter of remove current diff from car, swap rear housing, swap stub axles, install R33 diff with old diffs rear housing and stubs.

And this should all work fine?

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