finally got the mini over from my dads and into garage last night. Plan was a vw 1.8t but was offered offered a 2.0 16v from a vectra Sri couldn't turn it down for the price. Hoping to have done for the summer.
Tonight i had a little time on the mini. Stripped the driver door down, removed the windscreen to find the killers full of filler so gave it a buff down to find out its had a new roof fitted joined on every pillar. Also started removing the front end to get the engine out. Al try get pictures up tomorrow.
I personally haven't done a roof chop of my own, but was involved when my mate chopped his 32. To keep the body structure in shape, we welded in temporary support structures/box section. These were welded in place diagonally inside the car to stop flexing, movement, etc
Someone else has done this in the past so i mean to strengthen it up now as i don't know how they went about doing if its just butt welded or not as personally i would have boxed inside the pillars so the roof slide over the box. The only thing i can think is to link a roof cage to the shell?
ive chopped a few minis, and find the easiest and best way is to put 25mm box section inside the b pillars, drill a hole in each side if the upper and lower pillar and put a piece of box section inside the lower about 2 inches down then plug weld the holes, do the same with the upper when you lower the upper section onto the box section. then seam weld right round. the rear pillars , you can drill out the spot welds on the inner support structre then butt weld the old and new bits back together (after lots of measuring and careful cutting), then when you have tacked the bits in place you can plug weld the inner structure to the outer then butt weld the rear pillars up. front pillars i just butt weld but make sure you get good penetration.
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