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Undertray threaded post replacement

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10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHUndertray threaded post replacement

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Repair ' and bought

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Suggestion · Original poster

I searched for 'Porsche 996 911 986 Undertray Mounting Stainless Big Head Repair' and bought from a seller called 7445jond.

Undertray threaded post replacement
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Leading evidence: 'Repair ' and bought' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair ' and bought' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Replace threaded underbody posts

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I was hoping to tap into the knowledge base here regarding replacing the threaded underbody posts that the plastic 10mm shouldered nuts affix to, when retaining the underbody protection panels.

Undertray threaded post replacement

Use glues

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

My go to metal to metal in the past has been JB Weld but it has been years since last doing anything of this nature and the whole bond/glue arena has exploded with so many various options, as manufacturers increasingly use glues to hold modern cars together, very confusing!

Undertray threaded post replacement
Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Repair ' and bought

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I searched for 'Porsche 996 911 986 Undertray Mounting Stainless Big Head Repair' and bought from a seller called 7445jond.

Undertray threaded post replacement

Replace threaded underbody posts

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I was hoping to tap into the knowledge base here regarding replacing the threaded underbody posts that the plastic 10mm shouldered nuts affix to, when retaining the underbody protection panels.

Undertray threaded post replacement

Use glues

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

My go to metal to metal in the past has been JB Weld but it has been years since last doing anything of this nature and the whole bond/glue arena has exploded with so many various options, as manufacturers increasingly use glues to hold modern cars together, very confusing!

Undertray threaded post replacement
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T183130Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I was hoping to tap into the knowledge base here regarding replacing the threaded underbody posts that the plastic 10mm shouldered nuts affix to, when retaining the underbody protection panels. I have a full set of correctly sized 'big foot' stainless replacement posts and also fresh plastic nuts. My plan is to cut the remaining stumps off and then clean up the area and bond the 'big foots' into place. My question is.... What would anyone with experience of this task recommend to bond the 'big foot' posts to the body? My go to metal to metal in the past has been JB Weld but it has been years since last doing anything of this nature and the whole bond/glue arena has exploded with so many various options, as manufacturers increasingly use glues to hold modern cars together, very confusing! Any comment or recommendations would be very gratefully received, thanks.

POST 2Original post

Sorry cannot help with alternative to JB Weld, but interested where you purchased the posts from and advice from others on best product for attaching post to body.

POST 3 / ORIGINAL POSTEROriginal post

I sourced them on ebay. I searched for 'Porsche 996 911 986 Undertray Mounting Stainless Big Head Repair' and bought from a seller called 7445jond.

POST 4Original post

Thing to do is try JB and leave it for a couple of days to cure then try and snap it off with your fingers. The trays don't need much to hold them. Those look like a good alternative to the OE Riv nut type. I got a load of new plastic flange nut washer things off ebay too , really cheap. Only thing I can see is those stainless ones you've got are threaded where the OE ones are like a coarse self tapper and also the trays will stand off a tiny bit. You'll want bear metal and acetone before JB and tape them in place while they cure Pardon our interruption... PORSCHE BOXSTER 987 CAYMAN 911 997 CLIPS COWL PANEL COVERING COVER TRIM | eBay UK BUT NOT ALL Porsche Boxster 987, Cayman, 911 (997) models. IF you dont have an old one to compare. FIRST to make sure it is the correct ones you need, we cant guess which of the different ones you need. www.ebay.co.uk

POST 5Original post

Quotes source post: 2729963

have a search for Mistercorn 996 project car thread. he has a good write up on how to do it and what to use. That's what I copied when doing mine

POST 6Original post

Quotes source post: 2729963

https://911uk.com/porsche/2001-c4-project-car.97291/post-1309210

POST 7Original post

Stainless big heads have a holed fixing plate that bonds well. They are typically metric threaded.

POST 9Original post

I buy the bighead stud fasteners and the adhesive from these guys. https://www.ecfibreglasssupplies.co.uk/ec1000-acrylic-adhesive-black

POST 10 / ORIGINAL POSTEROriginal post

Thanks to everyone for all the input, I knew this was the right group to ask. Thanks again, very helpful and much appreciated.

This is a source reference. Confirm exact model applicability in the original material.