Sunday 26 June 2011

More wiring

I've wired in the lambda sensor connection today which completed the megasquirt wiring. Over the past few weeks, I've wired in the engine spur of the premier loom and the various sensors to the digidash and Megasquirt. I changed my mind on how to route the engine loom. Orginally this was going to be routed along the top offside chassis rail, tapping off along the way to the various engine components, but couldn't see how to make this look neat. Instead the loom is now attached to the engine using P clips, the wires will be protected using loom tape or conduit once the connections have been tested and the engine successfully started.

Before:

After:

I found two tapped holes underneath the coil pack so these have been used to mount cable tie bases which in turn support the loom.

Having failed miserably to join and solder three wires together (switched live from the ignition barrel to premier loom to ECU) I found and bought two power jointing boxes, one for switched live connections and the other for permanent live. These have now been fixed to the back of the battery tray and wired in.


As per the Premier instructions a fuseable link has been fitted to the front of the battery tray although not yet connected.

Also this weekend, a header tank from a rover 25 has been mounted using the header tank's bracket.


Saturday 25 June 2011

Lamda Sensor

Having been putting off the decision whether to route the wires for the lambda sensor under the car or through the side panel, I bit the bullet and drilled a hole in the side panel. Two reasons, I didn't like the idea of having wires exposed underneath the car and I think it looks neater. The plug for the sensor had to be cut off for the wires to pass through the grommet but I can solder this back on and then use some heatshrink to protect the joins. The plug will then route into the scuttle from underneath rather than through the engine bay.


This should be the last bodywork task on the side panels so means the front wishbones and suspension can be re-assembled and then the car can come off the axle stands.

Silencer mount

I finally got round to making a mount for the silencer today. This is made up of three parts, a length of 5mm bar bolted to the underside of the car, a Renault bobbin and a bracket to attach to the silencer.


The bar is at an angle so I could bolt through the seat web rather than just the aluminium floor, I thought this would give it a bit more strength. The near side of the bar is bolted through the lower chassis rail from the inside.

The top bracket is 3mm plate welded at right angles, the overall shape tidied up with a hacksaw then file. These parts have been taken off the car for now for painting.