WORKING IN THE TUNNEL
The Libra is rear engined, with radiator, battery and heater up front. So there are a lot of services to install in the central tunnel. I spent many hours on my back under the car. Robin's build stands were at just the right height, and I had some old carpet to lie on and pieces of foam for head rests, so I was fairly comfortable. Not enough to go to sleep - I did most of this work in the winter!

Services through the tunnel are:
  • +ve Battery Lead
  • -ve Battery Lead
  • Rear brake line
  • Hydraulic Clutch line
  • Main GTM loom
  • Supplementary loom
  • Electric speedo cable
  • Hot water to radiator
  • Cooled water from radiator
  • Hot water to heater
  • Cooled water from heater
  • Bleed from radiator
  • Servo vacuum
  • 2 X Handbrake cables
  • 2 X gear change rods
So it is all quite a tight fit, and everything needs to be planned and fitted neatly, especially around the gear change, and at the rear where most of the above items go over the fuel tank and under the cabin floor.
services in tunnel This is a view forwards, looking up towards the gear change hole. On the right side are the hydraulic pipes, with the main battery to starter cables positioned underneath.

On the left side are the heater pipes, and the main loom.

Not all the services are installed in this picture!
 
third hand It took me a while to work out how to hold a spanner on the both the inside of the car, and underneath in the tunnel. So here's how I tightened the tunnel fixings!
I was surprised to look at another Libra builder's page and see the same solution, much later!

here: towards the bottom of the page is a similar picture to this one.

Robert is building a LHD V6 engined version of the Libra.

You can also see the handbrake mounted on top of the tunnel, and the wire for the handbrake warning light.
rear of tunnel This is the view looking at the rear of the tunnel. The petrol tank fits in the recess at the bottom of the picture, with all these pipes and cables pinched between the top of the tank and the rear floor of the tub.

I have started to put 'P' clips to hold things in place, and placed heat sleeving over those parts which will run up the bulkhead next to the exhaust manifold.

At the right hand side is the inner rear suspension bracket, and the triangular mountings are the fittings where the engine support frame is bolted to the tub.

The main radiator cooling pipes and the gear change rods will pass under the tank, so are not in this picture.
 
services over the tank This is the view looking directly up at the very rear end of the tunnel. the left of the car is to the left, and the rear is at the top.

The tank will fit with the top against this lot.

I have 'P' clipped everything in place, and set the exit point for each service nearest to where it will be needed in the engine compartment.
tank This is the top of the petrol tank just before fitting.
I have laid the fuel line on top of it, and tie wrapped it together to keep the correct bend in place.

At this point I used one piece of tubing just connected in a loop, and planned to cut it to length when making the connections. Also, this meant I could test the in-tank fuel pump prior to fitting. I was careful to identify which part of the loop was flow and return!

The fuel pipe is laid so it goes to the back of the tank, and the pump and gauge electrics are hanging over the front edge.

At the rear right side (left in the picture) are the filling and breather connections. The smallest one is part of the vapour recirculation system in the original application, and has been blocked off.