This blog is intended to document the build of my Gardner Douglas Mk4 Cobra; partly as IVA evidence, bit primarily to help others learn from my mistakes and/or successes.

I will endeavour to post as often as possible, with a view to entering a single post for a particular element of the build process, however inevitably some things may not be completed in one go. All posts will be tagged so it should be easy enough to find the information you seek.

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Tuesday, 5 April 2016

Heater box take 1...

So this was my first major cock up on the build, thankfully it's only inside the battery/heater compartment and not on the outside!

The manual states that the heater needs to be mounted as high up and as far outboard as possible which makes perfect sense. I started by dismantling the heater so I was left with an empty box with no ends on, four M8 rivnuts (I would have used M6 but the nozzle for my tool is broken) were installed ensuring the bottom two wouldn't fould the heater matrix.

I then made a cardboard template which was offered up as high and outboard as possible, holes marked on the bulkhead which were then drilled out. I then put the two outlets back on the box and made sure they fit which they did, great I thought.

What I didn't consider was the fact that when the matrix is back in the outlet pipes protrude inboard and prevent the whole assembly going high enough, so my holes are too high.....doh!

These will need filling and I'll start again....

Heater box fully assembled 

Heater box fully disassembled 

Cardboard template put in wrong position, do copy this! 

Even worse, loads of holes in the wrong place, out with the P40

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