Tinkering time with my NC1... Steering Column upgrade complete

Hi all,

As you may have seen I’m now on 3 months gardening leave. I really need an excuse to avoid actually gardening!

So I’m replacing “gardening leave” with “tinkering time”.

I’m taking on interior projects that have bothered me for ages. These tinkerings will take an age to complete, thus avoiding the gardening!

Advice welcome!

The planned tinkerings:

  1. Steering column touchpoints:
  1. Behind the seats:
  1. Doors:
  • Fix passenger window regulator.
  • Soundproof the outers
  • New inners
  • NC2/3 door cards
  • Belt-loop handles in red
  • New weather strips (banana’d)
  • Likely new quarters (rust)

What do we think? Anything I should be adding/considering?

I’ve already done a fair bit in the engine bay and on the exterior, so I will be continuing the red/black/silver/grey into the interior. Photos of the bay and exterior below

Cheers
Dawson


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Completely strip out the interior , check condition of floor pan , clean , prime , paint and then cover with sound deadening material :grin:
There’s 3 days filled in mate :+1:

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Project One Complete

AutoExe Wheel, RX-8 wiper stalk and column spacer are ON. It was surprisingly easy…

Before & After

Front face

Profile

Wide angle

The tools I needed:

  • 10, 21 & 22mm sockets
  • Hex and JIS screwdriver heads
  • Trim removal tools
  • Long nose pliers

Step by step

  1. Removing the wheel.

For this, I found this video very helpful:

Note that I think they were working on a slightly different model. I found only the yellow clip on my airbag seen disconnected here:

Everything else was as per the video.

  1. Moving the plastics to the new wheel

There are two very obvious screws in the centre mass of the wheel. These hold on the back plate, along with some tight-fit plastics. There is also a clip to hold wiring for the wheel controls in place. Once the screws are out, and the wiring unclipped, don’t be afraid to give the back panel some wiggle to get it free.

That then exposes 5 more screws on the rear of the wheel that hold the front facias. 2 per side and 1 for the bottom. Seen below:

Again, once the screws are out give the facias some wiggle!

Once everything is off, repeat in reverse onto the new wheel. However, do not clip the wiring back in! You will want to route the wiring to give you maximum slack for later.

  1. Changing to the RX-8 wiper Stalk

Again another YT video to the rescue. I think I found this far easier to complete without the wheel on. Just be careful re-routing the wiring for the welcome light over the ignition lock.

  1. Installing the Spacer

There are (not great) installation instructions here: Mazda MX-5 Steering wheel spacer installation

The spacer comes in 2 parts, the female fitting to the original column and the adapter plate that adds a new column “spaced” over the original. They ship it put altogether, so go ahead and pull it apart before installation.

Placing the female fitting was easy enough. Feed the airbag wire through the lower opening on the spacer. There are split lines on the plastic surround at North and South that help you line up the steering angle sensor and spacer with the North arrow that is helpfully embossed on the plastic column housing.

The most important thing is that angle sensor is lined up. Thanks to the splines, you will probably find it looks very off-centre if you miss the right “North” for the spacer.

Once in place, you then use the OEM Nylon nut to torque down the spacer onto the column. See:

Now you place the adapter on top with the 6 socket cap bolts. Seen here:

  1. Replacing the new wheel

This is entirely step 1 in reverse, you have not clipped your wheel controls wiring back into the wheel plastic, so you have more slack to reclip it into the car. Just make sure the wiring doesn’t/can’t interfere with the airbag wiring.

There is one other thing. The spacer uses a 22mm nut, instead of the OEM 21mm. Tiny I know, but an annoying faff at the finish line!

  1. Enjoyment

The wheel feels fantastic but looks close enough to OEM that it doesn’t look out of place. The build quality, as you expect of AutoExe, is excellent. I’m already finding the thicker and changed grip profiles far more ergonomically helpful, both driving in earnest and manoeuvring around car parks.

The spacer has done exactly what I needed it to as well. I’m 6"1 and I’ve already dropped the seat with a pair of Jass brackets. As a result I was finding that I had to either stretch to reach the top of the wheel, or cling on with a death-grip to avoid losing control. It’s not adjustable, but it has made a huge difference. Now I feel far more like McRae at the wheel of his scooby, instead of Doris clinging on to her Rover Metro.

The wiper stalk? It works, so +1 for adjustable intermittent wiper function…

Onto the next.

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Good write up!

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