After the interior was painted, I had my heated windscreen re-fitted (Previously removed from the old shell), and then fitted the rear polycarbonate screen myself. I opted for a Plastics4Performance item, as they are local to me, and come with a black border which looks more like a standard rear screen. The rest of this update is a bit all over the place, as I only had a few weeks to sort everything in time for its first test at Oulton Park, so the jobs were all done at different times.
The next job to weatherproof the car was to get my polycarbonate windows in the doors, whilst removing any un-nessecary weight from them and making up some door cards.
The pedal box was next to go back in, with single line to the rear, where I went through the chassis with the lines that run out to the rear calipers. There is also a brake pressure sensor in the rear circuit. The speed pickup wiring also drops through this grommet to the differential.
With the brakes bled and everything checked, I moved onto the differential oil cooler. I ran this previously as after any hard driving in the dry the oil gets very hot, being a plate LSD cooling is critical so you don't wear out the friction discs quickly. It consists of a Mocal scavenge pump, check valve and a 10 row cooler. The pump is connected to the drain plug, and return to the fill plug. You can see the external pipework in a couple of the pictures lower down. After the initial test day the spare wheel section is to be covered/sealed, and airflow fed in to it from the rear window.
To make the car compliant for racing, I had to consider a few other electrical items which are manditory, one being a rain light. With the rest of the build being relatively neat, I decided to draw up any brackets I needed at the time and get them cut from stainless. It just makes the assembly so much quicker not having to fabricate the parts manually.
First was a rain light bracket, 2mm stainless which was then bent in a vice, and attached to the roof skin cavity using M5 riv-nuts.
With the cage being so close to the roof, and the windscreen bar being a further back, I could not mount my rear view mirror to it any more. The same principal applied, 2mm stainless and riv-nuts in the roof cavity.
I use a Dash2Pro for logging, ECU data and alarms. I also run an AEM wideband for reference, so drew up a mount to combine them both, which would bolt to a bracket I made for the steering column. As can be seen I also had a small bracket cut to the right of the column, for the steering wheel wiring connector, more on this later.
This brings me on to the wiring. I had previously re-wired the entire car in the previous shell, to simplify everything and run the bare minimum. This time, I decided to make the switch to a solid state power management unit, specifically the ECUMaster PMU16. It negates the need for seperate relays, fuses and controls, and gives the ultimate flexability with functionality.
As previously shown in this thread, I had already made the required changes to my engine loom (pressure sensors and knock control), so I proceeded to spend a couple of weeks planning and designing what would be the new interior, and rear looms. I added in everything I could possibly need moving forward, and utilised all 16 output channels on the power module. I completed the rear loom first, which wasn't too far different from before, it just had a rain light connector added and secondary fuel pump. I am running the same Walbro 255LPH as the main feed pump to the engine, but have added a standard 328/M3 pump/housing into the passenger side of the tank, which is simply lifting fuel to the main side of the tank in a loop to prevent fuel starvation.
Once the rear loom was complete, I made a start on the main body loom which included the ECU and PMU16. I had left four threaded mounting points in the chassis on the passenger side, previously where the standard fusebox would mount, so I could mount a plate there with both units on it. Rather than messing around marking out and drilling the PCD of the mounting points, and PCDs of the ECU and PMU16, I drew it in CAD and had it cut from aluminium.
Now I knew there each was mounted, I could build the loom off the car, as the engine, headlight and rear looms all have their own connectors into this 'main body loom'. The planning paid off and a number of very late nights later I was nearly finished. CANBus was also implemented so the PMU can talk to the Dash2Pro and log all voltages/current draw/states of each output. 4x USB power feeds were also built in for cameras and any other devices that may be used in the future.
This was then put in the car and routed accordingly - I only have one picture at the moment but will get some fresh ones now everything is in properly soon. The connector you can see labelled 'EXT' is for the external kill switch on the scuttle panel, which at the time was not in place. You can also see the connectors on the bulkhead for engine loom, headlight loom and battery feed for the starter/alternator.