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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Monday, 13 November 2017


The BTR differential comes filled with oil and is very heavy so having a friend on hand was extremely helpful, doing it on my own would have been a real struggle.  The diff was lifted in to place and placed on my friends knees whilst he sat on an old office chair, this kept it roughly in place and allowed me to get a couple of bolts in to relieve the strain.

Mounting is straightforward with 3 bolts in the front, 4 to attached to the angle bracket and 2 bolts with nuts to hold the bracket to the chassis.  Once all the bolts are in loosely they were tightened up permanently.  Whilst this all sounds a five minute job, it took two of us almost an hour!

 Rear of diff showing angle bracket

Front of diff showing input flange

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