Hi Steve,
This weekend I tried to save the original thread as the hole got wider .... I inserted a fine hacksaw and cut through the remaining outer circle of the bolt at several points, hoping it would 'simply' fall apart. No luck! I was beginning to think that the bolt might have been 'cross threaded' because it was so tightly stuck!
Anyway, the time came to get a larger 'drill anything' Bosch drill bit out and off I went, trying to manually keep it as close to centre as possible. I came so close but as you can see from the section of old bolt that eventually came out .... I've damaged the original socket thread so it'll need a longer bolt, nut and washer to make it secure. No worries though, I've managed to achieve a lovely shiny 12mm hole for that.
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I've been looking at the various diagrams on the manuals for dimensions for the floorpan drops and am confused. I think some of the dimensions given are wrong, and it's a pain having some in inches and others in mm. I've decided to go with what seems right for me ... essentially cutting my lovely brand new floorpans 15mm from the tunnel and immediately adjacent to the lip on the outer edge.
I've driven Phill's Mk2 Nova (with 2.5" drops) and am going to go for the same with mine. My old floorpans had 3" drops but I'm only 5'6" and I don't remember having headroom problems back in 1991.
My question for everyone else is this ... seat options have changed since the Nova was being produced all those years ago. Have any of you found that the floor pan drops should be any different from the dimensions given in the manuals (albeit they're different!) in light of more modern options for seats?
Cheers,
Alistair