Rear axle swap

Rear-axle swap
My rear axle was in desperate need of an overhaul – it was leaking from the differential, the axle bearings were shot, it made clunky noises and had sticky brake calipers… overall it was in a very sad state…

Luckily, I managed to acquire a complete axle with my competition chassis. Since I parked that project for now, I decided to bring it in and swap it over with my current one – while the other gets an overhaul.

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Old/ current axle (top) and newer complete axle (bottom).

There were a few problems with the spare – so everything was taken apart, inspected and reconditioned. A new coat of paint was put on and I began to fabricate some new hard lines.

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The spare axle was taken apart, inspected and re-painted.

Brake fabrication (hard lines)
To make future maintenance easier… I decided to replace every fitting and routed each line so it was both visible and accessible for checks (but away from harm).

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The lines that were on the newer axle (top) were usable, but unorganised – so I used them as reference to fabricate some new ones.

Several versions of the same brake lines were made – I kept finding pros and cons with each one and eventually settled on one template I was happy with… maybe after 10… ๐Ÿ™‚

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This was the first version of the brake line – had a ‘few’ more iterations after this one.

My flaring tools weren’t really the best – but they did the job. A fair bit of refinishing was required afterwards. In the end, all my flares eventually looked like this:

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Fair bit of refinishing was required, but I was happy with the end result.

In comparison here’s a picture of them side-by-side with the old, weathered ones:

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The old lines were rusty and stripped.

For all those wondering:


Flare specs for the AE86:
AE86 hard lines should be 3/16″ and the fittings are Toyota metric 10 x 1.0 (M10 x 1.0″ for 3/16″ lines) with double flare SAE / Japanese inverted flare.

brake-flare-chart
 

Stainless brake lines
APP stainless steel lines went in along with the new hard lines.

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APP stainless steel brake lines.

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I was quite impressed with the quality inside and out – the threads and joins were all factory finished too.

Traction brackets & Rear control arms
In preparation to mounting everything back in, I installed new traction brackets and temporarily installed control arms on them.

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Traction brackets – passenger-side.

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Traction brackets – driver-side.

Eventually, we got ourselves here – the axle was ready to be put back in. At this point, I ordered some new washers, bolts and bushings to go into the lateral rod and dampers ๐Ÿ™‚

The trolley made everything much easier – from putting things together to raising it into the body:

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Being able to move things around with ease is essential when working on these things…

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