Hex heads of doom

2bmws

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Joined
Jun 2, 2020
Points
44
Location
Wales
Model of Z
Z3
Been out there today started using hammer and chisel, got it started got about a 3rd of the way out and the nut behind has dropped so swore quite a bit and packed my tools away
 

mrscalex

Zorg Guru (IV)
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British Zeds
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Jun 10, 2016
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Location
Swindon & Swansea
Been out there today started using hammer and chisel, got it started got about a 3rd of the way out and the nut behind has dropped so swore quite a bit and packed my tools away
Not seen that happen before. It should be welded on.
 

2bmws

Dedicated Member
Joined
Jun 2, 2020
Points
44
Location
Wales
Model of Z
Z3
It was welded on, going to hacksaw the head off tomorrow as its too close to the petrol tank to use the disc cutter then when I put the new part on gonna have to take the sill cover off and put a nut behind it, this isn't going well
 

mrscalex

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It was welded on, going to hacksaw the head off tomorrow as its too close to the petrol tank to use the disc cutter then when I put the new part on gonna have to take the sill cover off and put a nut behind it, this isn't going well
I am just a little concerned at what corrosion may be lurking behind the sill cover. It's unusual for the brackets to rot out and it's possible corrosion caused the nut to fall off. But it doesn't necessarily follow.
 

2bmws

Dedicated Member
Joined
Jun 2, 2020
Points
44
Location
Wales
Model of Z
Z3
I think it's where I was hitting the bolt too hard with the hammer and chisel
 

Althulas

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Banburyshire
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M Roadster
Those nuts are pretty welded in there I hope that’s the case you’ve managed to crack the weld and not rot behind there but saying that it would have easily turned earlier. You can get access through on of the holes in sill to hold a nut there when you come to bolt it up. I would use some loctite when you come to bolt it in and get the nut tack welded later. I hope you have a better session next time.
 

jaguartvr

Zorg Guru (I)
Joined
Jan 9, 2017
Points
95
Maybe a rectangular plate with a suitably drilled and tapped hole. You could hold the place on a magnet while someone else threaded the bolt in.
This way you wouldn't have to try and clean the inner sill up for welding and if it is rusty it will spread the load. If you do need to remove the bolt and you have worked out the correct size of the plate, it will become trapped and won't turn when you remove the bolt.

I suspect that these bolts are fitted with loctite, to remove them successfully the bolt needs to be heated first to soften the loctite. I work quite a bit on Harleys and Triumphs, almost all the bolts are fitted with locktite, any allen or torx bolts that are not heated first will strip, I always heat them first before attempting to undo them, saves a lot of time and hassle in the long run.
 

Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
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Mar 26, 2014
Points
193
Location
Basingstoke
Model of Z
Z4 Coupe 3.0si
It was welded on, going to hacksaw the head off tomorrow as its too close to the petrol tank to use the disc cutter then when I put the new part on gonna have to take the sill cover off and put a nut behind it, this isn't going well
You might have to take the sills off to gain access to the threads behind (as seen in Pingu's Video) if you do this you can just replace with a nut n bolt.
 

2bmws

Dedicated Member
Joined
Jun 2, 2020
Points
44
Location
Wales
Model of Z
Z3
All done😁 new push rods on, just got to do that bolt now. It wasn't rotten behind the bracket must have been hitting it too hard, should of use a set of mole grips or something once I cracked it with a hammer and chisel
 
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