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Centre diff locking for RWD how to by Uncle Darth


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Firstly this is a how to dealing with welding a centre diff BUT allowing the retaining of the front axles so to make it easier to pass a WOF without to many questions.

Now for the warnings I take no responsibility about any damage done to the vehicle or person whom under takes this mod .

You will need to take the centre diff out of the gearbox, this can be done with gearbox in car :)

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This is the centre diff as it should look (this one is from a 93ish GT so yours may look different)

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Dismantle the centre diff by removing the circlip I would also remove all bearings if u wish to reuse them,

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You should now have 3 bits the carrier, the drive flange and the viscous coupling, u will need to cut part of the viscous coupling of to negate the front drive

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After some measurements I figured out that a length of 20mm would work best

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Marked

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Cut

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The 2 parts now, a wee clean up and looks good I used a 4" grinder with a 1mm cutting disk on it,I would suggest having it parted of in a lathe but mine is only a wee hobby lathe

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All back together and welded at the spider gears

Put back in and go do a some skids :)

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 vfjohno said:

Hi after reading this thread keen to try out rwd :D

but I was wondering can I use any centre diff out of any gearbox, and not have to worry about centre diff ratio matching then swap my original back in when I want to.

No, you\'ll need a matching centre diff if you want a spare, they won\'t all fit. What car have you got?

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Hi I have v4 wrx ra

4.44 final drive

Damn I was hopeing to just get a broken gearbox and pull the diff out weld the spiders and cut the front drive shaft coupling so without driving the front wheels the rate the diff spun wouldn\'t mater.

Is there a reason this wouldn\'t work?

Is the spline count different?

Sorry I\'m not to on to it with diffs and stuff :(

Gearbox code ty752vb5ba

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 vfjohno said:

Hi I have v4 wrx ra

4.44 final drive

Damn I was hopeing to just get a broken gearbox and pull the diff out weld the spiders and cut the front drive shaft coupling so without driving the front wheels the rate the diff spun wouldn\'t mater.

Is there a reason this wouldn\'t work?

Is the spline count different?

Sorry I\'m not to on to it with diffs and stuff :(

Gearbox code ty752vb5ba

Need to check but isnt that code a DCCD box? I wouldnt be fucking around with it just wind the wheel. If you want more driftpig then you shouldnt have an RA.

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Yeah I know shouldn\'t be doing skids in a wrx but I bought the car as a toy and skids and drifts are fun ;D

I think worse case diffs and axels are pretty cheap and just as likely blow the motor on the track as doing a burnout so yeah just an idea at the moment :)

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