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Old 28-01-2018, 09:34 AM   #1
M3simon
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Replacing underbody fixing studs??

Morning all.
I'm after a bit of advice on how I can replace rusted threaded studs from the underside of my car.
Some seem OK however, when I've removed the plastic under trays, some have just fallen a part.
Anybody any ideas how these can be replaced.
I'm assuming they are welded on? (Is there a bonded verson, as I can't weld)
As always, any advice very welcome.

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Old 28-01-2018, 09:57 AM   #2
steveo3002
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if you cant weld , id suggest you fix the sheild back on with a screw after checking whats inside / or put a screw through from inside to replicate whats there ..use a stainless one so it never rusts
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Old 28-01-2018, 11:02 AM   #3
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You could try emailing the guys at Redish Automotive to see if they'll give you any tips? I have seen them replaced but don't know if they're welded, self tapping or epoxied? Just out of curiosity, how will you repair cracks, spot welds etc without welding?
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Old 28-01-2018, 11:22 AM   #4
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theyre originally fitted with a stud welder
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Old 28-01-2018, 11:33 AM   #5
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Quote:
Originally Posted by steveo3002 View Post
theyre originally fitted with a stud welder
Cool. Seems that welding is becoming a lost art.

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Old 28-01-2018, 01:05 PM   #6
M3simon
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Quote:
Originally Posted by benjcarter View Post
You could try emailing the guys at Redish Automotive to see if they'll give you any tips? I have seen them replaced but don't know if they're welded, self tapping or epoxied? Just out of curiosity, how will you repair cracks, spot welds etc without welding?
Ive already had the sub frame repaired in 2012.
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Old 28-01-2018, 01:15 PM   #7
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Can you not fit rivnuts? i've fitted those to Landrovers when fitted side steps - they fit into the holes and are very tight and secure and no welding needed
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Old 28-01-2018, 01:34 PM   #8
benjcarter
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Quote:
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Ive already had the sub frame repaired in 2012.
Ah ok. Good luck with it mate. Let us know how you do it in the end as I'm sure I'll have to tackle that at some point.
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Old 28-01-2018, 01:51 PM   #9
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Quote:
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Can you not fit rivnuts? i've fitted those to Landrovers when fitted side steps - they fit into the holes and are very tight and secure and no welding needed
Second for rivnuts
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Old 28-01-2018, 03:45 PM   #10
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Kits are available for undertrays...not seen a link where anyone has used them though....

https://www.ebay.co.uk/itm/44Pcs-Und...4383.l4275.c10

Or drill and fit rubber nuts...they definately work ok...available in every size you could want.

https://www.ebay.co.uk/itm/RUBBER-WE...72cf42e5a9412d

Or.. you can buy repair fixings from Mini/BMW...

https://parts.miniofkennesaw.com/pro...147133779.html

Last edited by aka.eric; 28-01-2018 at 04:01 PM.
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