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Cefiro Diff

nissanmagic
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nissanmagic Enthusiast

nissanmagic

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Posted

so i went to get my diff in my cefiro shimmed and was told that it cant be done because the centre viscous coupling/housing is sealed, is this true? it only has a stock viscous lsd and i was under the impression that they can be done or do i have to change the whole diff to a 32 unit?

any help is appreciated.

cheers

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  • 2 weeks later...
daisu Mentor

daisu

Posted
Posted (edited)

The diff in the cefiro is the same as the diffs found in S13 and R32.

If it is viscous then it sure as hell can be shimmed.

If you have access to a decent air compressor and rattle gun then it's pretty easy to do yourself. There is a guide on the D1NZ forums.

Basically, you knock the shafts out with a mallet, undo the bolts on the bearing caps, pull the center out of the housing (make sure you watch which way all the spacers/shims/bearings/caps come out).

There is like 10 bolts holding the crownwheel to the diff center, undo these with the rattle gun, then underneath the crown wheel is 2 screws (flathead), undo these 2 screws and then you can split the center in 2 parts. You will find the shim goes inbetween these 2 parts (there is already a shim there from factory).

Then, get the halfshaft (the one that is longer than the other) and put it through the diff center to make sure that all the splines inside the diff are lined up. Make sure you do this before you reassemble the diff, otherwise you will have to pull it apart again.

Once you have the crownwheel bolted back on you can pull the halfshaft out and put the center back into the housing.

Make sure you use locktite on the bolts.

Edited by daisu
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daisu Mentor

daisu

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Posted

Yeah, they are phillips, I don't know what I was thinking, make sure you use a decent quality screwdriver and even give it a couple taps with a hammer first to try shock (and loosen) it up a bit. And yeah the shims that go on the outside of the bearings are pretty fiddly, might pay to have a friend help you.

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