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RX3 owners rear end upgrade (Help)

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Old 07-11-11, 05:10 PM
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RX3 owners rear end upgrade (Help)

Hey all,

Well i got the TII running well in my rx3. unfortunately and obviously i broke the left side axel. (saw that coming).
need advise on a reasonal upgrade to rear end without braking my back or bank account. I would like NOT to cut the wheel wells.
What size gearing? Rear? and Wheels? i would still like drivability with the ocasional trim to the track for a few pases.

Thanks
Richard
Old 07-11-11, 05:32 PM
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I'm getting a ford 9 narrowed to put into mine. Move the brackets and use the stock design with a beefier rear. All said and done, under $800. Already had the 9 and just found a nice LSD unit used from the mustang guys. An 8.8 would work well too. Little cheaper and just as strong aftermarket
Old 07-11-11, 09:08 PM
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Thanks J man

here's what's left of the axel.
is there an axel that will fit other than rx3? maybe 1st gen

thanks again guys
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Old 07-18-11, 11:43 PM
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Sorry to bring this back up, but the driver side axle is 2 3/8" smaller than the passenger side.
i picked up some 82 axles that fit the 3rd member but they are the same length as the pass side. anyone know what i can use?

Thanks again
Old 07-19-11, 03:33 PM
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Use the other one and have it cut-to-size by a machinist. That is the cheapest and easiest way. Or another way is to buy a chevy 10 bolt rear from a taxi or police junkyard, trim, weld and put onto your rx3.
Old 07-20-11, 10:18 AM
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Cheap, fast, dependable.

Problem is you can only have 2 out of the 3.

You are breaking axles!

You are going to need to fix it with money.

A machinist can cut new splines. They will have to take the hardness out, cut the splines and re-harden it. Done right it should be as strong as the one you just broke. To make it dependable, you will need to select a different diff.

Now you have all kinds of different ways to go. Do you know what you want or need?
Old 08-08-11, 02:14 PM
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I have an 8.8 rear end from a 96 mustang GT , 28 spline Would work fine 300$
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