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Old Sun, Apr-05-2015, 05:13:16 AM   #4
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Default Re: Building an E30 M3 gravel rally car :-)

The first mechanical work I took on was preparing the brake system we plan to use on the car. I purchased the front and rear subframes from a 2.8l Z3 at junkyard. They will bolt right up to our E30 shell, give us slightly beefier control arms and trailing arms than what came standard on the M3, and also came with 5-lug hubs and upgraded brakes -- brakes that thankfully will still fit under 15" wheels.

First up was to clean all of the parts and prep them for the rebuild:

With that done, I ran the parts through my Eastwood tumbler to knock off the caked on brake dust and years of grime:

Everything cleaned up well, but could use some paint to be more presentable:

And here is the finished product with fresh paint, and re-assembled with new boots and seals:

The rebuilt calipers were then packed away with brand new rotors and pads, with everything ready to be reinstalled when we get to that point in the project:

As a bonus, while working on the brakes we also did the same thing to the sway bars. A 23mm front bar is being paired with a 15mm rear bar.


- peter*g

.'02 E46 M3 (GTS roadracer)
.'96 E36 M3 (Dinan S3)
.'90 E30 M3 (rally racer)
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