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| Stacey007 Member Since: 25 Sep 2015 Location: Cheshire Posts: 3696  
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When I did mine
I drilled and fitted new rivnuts for the reason you said 
https://www.machinemart.co.uk/p/tool-conne...zYEALw_wcB You basically squeese in a new thread to bolt to, you don't actually need the tool it can be installed with tools you have but easier. My kit was from ebay around £20 |
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1st Jul 2020 11:28am |
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| Paul1275s Member Since: 21 Apr 2019 Location: East Sussex Posts: 80 
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Yup, bought a kit off ebay, has been ace, just make sure you drill the holes for the inserts as close to their diameter as possible. 2003 Defender 110 TD5 SW
2003 Caterham 7 2006 Mini Cooper GP |
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1st Jul 2020 12:03pm |
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| Notyalc Member Since: 27 Jul 2018 Location: Northumberland Posts: 142 
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They don’t knock in, that would never hold. You need a tool as said above or some ingenuity and strong arms. |
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1st Jul 2020 7:47pm |
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| RoddyK05 Member Since: 08 Apr 2015 Location: Inverclyde Posts: 633  
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You don’t even need to drill out the old insert, a quick dab with a hammer and punch and they pop through. This does however leave a hole slightly bigger than desired for the 6mm rivnut, but it still works. I did mine last week but only had to replace 3 of the six so I think I got lucky. The originals sit flush in the cross member but the replacements have a slight lip on them so they sit a wee bit proud. This can lead to dirty water running down the mudflap which has squeezed its way between the x member and the mudflap bracket. I imagine some dum dum or similar applied before bolting them together would solve that minor irritation. Or a bead of sealer along the seam on the inside?
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1st Jul 2020 9:05pm |
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| Oldowner Member Since: 26 Dec 2018 Location: South west Posts: 603 
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At one time Land Rover used to put washers between mudflap bracket and outrigger / cross member to stop water being trapped between them and rotting the chassis.
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1st Jul 2020 9:39pm |
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| donmacn Member Since: 07 Nov 2017 Location: Nth Scotland Posts: 1829 |
Just to say that you can get rivnuts in all sorts of different permutations if you shop around - stainless, hex shaped, smooth or with grooves, with external lips/flanges or without. The ones without - kind of like counter-sinking - sit just about flush with the external surface - though here the hole size is more critical to get them to set. And if you have a few in different styles and sizes "in stock" then you've often the option of going up a size by drilling a slightly bigger hole. Apols if you already know this. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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1st Jul 2020 11:17pm |
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| roche1800 Member Since: 07 Apr 2020 Location: derbyshire Posts: 246 |
Thanks all the info.
I know I have made a mess of at 2 or 3 on front mudflats so going up a size seems a logical option. Can you just confirm that the front mudflats are round rivnut M8 with 2 each mudflat and the rear are hex rivnut M8 x 3 each mudflap. Many thanks. |
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2nd Jul 2020 7:44am |
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| GREENI Member Since: 22 Aug 2010 Location: staffs Posts: 10367
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Don't forget this site has all the top tips...
https://www.defender2.net/forum/topic8631.html |
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2nd Jul 2020 10:11am |
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| ak615 Member Since: 22 Aug 2018 Location: essex Posts: 174 |
Rear mud flaps are m6
Screwfix do a set of rivnuts lots of different sizes which is quite handy EASYFIX BRASS MIXED RIVET NUT HANDY PACK 250 PCS (1380J) |
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2nd Jul 2020 12:13pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16927 
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^^ The only snag with that type is that it really isn't easy to find hexagonal drill bits nowadays.
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2nd Jul 2020 1:57pm |
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| kmac Member Since: 07 Oct 2009 Location: Middlesex Posts: 1294 
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Apparently they also work with round holes
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2nd Jul 2020 2:21pm |
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| donmacn Member Since: 07 Nov 2017 Location: Nth Scotland Posts: 1829 |
.... or you could get busy with a little file?
I say this because there have been a couple of places over the years where I've 'squared off' the holes that used to take self-tappers in order to fit square nylon inserts. This way, it's a better fixing for the screw, and also isolates the metals. I'm talking about the sort of purple inserts that are used for the floor panel screws; or the smaller white ones used for the screws that attach the lower dash to the bulkhead. That said, it's much easier to file away at a thin alu. panel than it is at a crossmember! Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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2nd Jul 2020 2:32pm |
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| ak615 Member Since: 22 Aug 2018 Location: essex Posts: 174 |
Hexagonal sheet metal punches are though https://www.amazon.co.uk/dp/B0828SFCSB/ref....Eb0RYC7K8 |
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2nd Jul 2020 4:34pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16927
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The hex drill comment was meant as a joke
And the punch in that link is for a circular hole.  |
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2nd Jul 2020 4:59pm |
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