jonathantennantbtinternet Posted August 6, 2019 Share Posted August 6, 2019 I'm guessing there's a captive nut . If so do I have to remove the inner panel to get to it ? Thanks in advancejonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 6, 2019 Member Share Posted August 6, 2019 Isn't that usually a threaded boss fixed to the chassis?What's the problem?Jonathan Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 6, 2019 Author Share Posted August 6, 2019 The bracket is loose and floppy but when I try to tighten the bolt the 'nut' now just spins freely . Link to comment Share on other sites More sharing options...
SM25T Posted August 6, 2019 Share Posted August 6, 2019 It's a threaded bush in the chassis rail normally Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 6, 2019 Author Share Posted August 6, 2019 Thanks Ok, so I' now guessing that the bush has come away from the chassis rail ? Link to comment Share on other sites More sharing options...
Wrightpayne Posted August 6, 2019 Share Posted August 6, 2019 or its stripped. You could just drill through the inner ally panel and fit a longer bolt and nut on the inside. Just check it wont interfere with the seat runners as I've never done this before - just lateral thinking a solution! Link to comment Share on other sites More sharing options...
aerobod - near CYYC Posted August 6, 2019 Share Posted August 6, 2019 The thread on the bolt or inside the boss is more likely stripped, I would check carefully inside the boss with a light. If so, tapping the next size up and using a larger bolt would be best. Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 7, 2019 Author Share Posted August 7, 2019 Thanks for the advice. I can't remove the bolt as the boss is just spinning around. It's a '97 car so the design might have been modofied on later cars ? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 7, 2019 Member Share Posted August 7, 2019 This isn't a definitive solution of the type suggested by James.But with this type of problem you can sometimes get the bolt out by loading the nut/ bush/ boss against something so that it stays still: try axial pressure both in and out and angling the bolt as you unscrew.Jonathan Link to comment Share on other sites More sharing options...
Wrightpayne Posted August 7, 2019 Share Posted August 7, 2019 I dont recall this happening before since the dawn of blatchat! I think you should give Bruce a call at Arch Motors for advice.Ian Link to comment Share on other sites More sharing options...
SM25T Posted August 7, 2019 Share Posted August 7, 2019 Suspect it is well and truly corroded together. Did you try PlugsGas before undoing it ? May still help if you can get something jammed against the bush. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted August 7, 2019 Leadership Team Share Posted August 7, 2019 Jonathan, here's a photo of what you're dealing with (my 1999 car, ignore the Waxoyl). The boss (middle bottom in the photo) is pretty substantial so it's unlikely that it will have broken loose, more likely the threads are damaged. If you can apply outward pressure while turning the bolt, maybe clamp it with mole grips and pull out while turning, you might get somewhere.Otherwise, it's not that difficult to get access to the inside - remove the seat and harness then drill out the rivets along the front of the rear quadrant panel and bend it inwards slightly, then drill out enough rivets of the main inner panel top and bottom to gain access. It might at first seem a lot of work but an hour of easy effort will give you the access you need.You might also choose to add some corrosion protection before riveting everything back in place.Stu. Link to comment Share on other sites More sharing options...
anthonym Posted August 7, 2019 Share Posted August 7, 2019 I think Ian at #10 has it. This nut handles great forces. Bruce at Arch 01480 459661and show us a pic? anthony Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 7, 2019 Author Share Posted August 7, 2019 Thanks for this, just wanted to know. Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 7, 2019 Author Share Posted August 7, 2019 Managed to remove the bolt. I now remember when PTSportscars had my 7 I asked them to sort out the fixing. First they used a Rivnut and I laughed........ told them it wouldn't last and to do it properly. I've no idea what they've done but it's certainly a bodged job. Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 7, 2019 Author Share Posted August 7, 2019 Update The old bolt was a M8 bolt secured by a nut, I managed to find a M10 bolt and yes it screws into the boss. Another bodged job by PTSportscars :-( Link to comment Share on other sites More sharing options...
Wrightpayne Posted August 7, 2019 Share Posted August 7, 2019 Original thread is UNF so unless you’ve re-tapped it M10 I suspect its not going to hold for long! Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 7, 2019 Author Share Posted August 7, 2019 Thanks, and yes you're right . Any idea what UNF size it is ? Link to comment Share on other sites More sharing options...
Wrightpayne Posted August 7, 2019 Share Posted August 7, 2019 Manual says 5/16 unf Link to comment Share on other sites More sharing options...
SM25T Posted August 7, 2019 Share Posted August 7, 2019 Which equates to around 8mm. Sounds like it may fall through the hole. Link to comment Share on other sites More sharing options...
Wrightpayne Posted August 7, 2019 Share Posted August 7, 2019 If the thread is compromised, I’d be inclined to stick with the nut and bolt arrangement. I’d be happy with that if the original thread had stripped. Link to comment Share on other sites More sharing options...
jonathantennantbtinternet Posted August 7, 2019 Author Share Posted August 7, 2019 That's what I did in the end until you mentioned the bolt size Link to comment Share on other sites More sharing options...
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