Rennlist

Cabin Noise w/ Roll Bar Install

Add to repair workspace

New repair projectOpen repair workspace

Original source

6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCabin Noise w/ Roll Bar Install

Leading reported evidence

Run over sand/pebbles/road debris

Performed · outcome unconfirmed

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 performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
A minor but persistent annoyance on these road drives has been a metallic "tinkling" sound in the cabin, presumably when I'm running over sand/pebbles/road debris.
Original post Read captured discussion
Cabin Noise w/ Roll Bar Install

Read full discussion summary

Leading evidence: 'Run over sand/pebbles/road debris' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run over sand/pebbles/road debris' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Use "contact" areas

Suggestion or failed attempt

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
Closed (harder) foam should be used for "contact" areas.
Original post Read captured discussion
Cabin Noise w/ Roll Bar Install

Frequently discussed actions (2)

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

Run over sand/pebbles/road debris

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
A minor but persistent annoyance on these road drives has been a metallic "tinkling" sound in the cabin, presumably when I'm running over sand/pebbles/road debris.
Original post Read captured discussion
Cabin Noise w/ Roll Bar Install

Use "contact" areas

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
Closed (harder) foam should be used for "contact" areas.
Original post Read captured discussion
Cabin Noise w/ Roll Bar Install

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.

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

Rennlist: 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: 20261027T201111Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Last spring I had a GMG World Challenge roll/harness bar installed, along with harnesses and GT3 seats, in my '03 C4S. It's not my DD but I take it out on weekends for "spirited" drives on nearby mountain roads. A minor but persistent annoyance on these road drives has been a metallic "tinkling" sound in the cabin, presumably when I'm running over sand/pebbles/road debris. The sound seems to transmit thru the roll bar tubing and thus gets amplified and "metallicized" (new word!). This is a bolt-in roll bar; I also removed the rear seats. Has anyone else experienced this? Tips for quieting things down? By the way, it's not an issue on the track - presumably because there's much less surface debris, and/or because I'm too busy having fun and stomping on it to notice.

POST 2Original post

I think Ford had this same problem about 5 years ago with the drive shaft tube on their F150 (or F250/F350?) trucks. The solution was to pack the hollow drive shaft tube with a well balanced fiber insulation. The same thing would probably work for you too. Get some foam or pink insulation, lightly pack it into the roll bar and reinstall. I bet that would damper the noise.

POST 3Original post

remove more sound dampening and you wont hear those pesky metallicized sand storms nearly as much

POST 4Original post

Wrap the whole bar with roll bar foam or have it covered with leather. Open cell will make it quieter but is only "legal" for non-contact areas. Closed (harder) foam should be used for "contact" areas.

POST 5Original post

I never noticed extra noise in my caged STi. The only downside was how hot the cage would get in the summer and cold in the winter. I don't think that the rear seat removal in a 996 would have any effect on noise.

POST 6Original post

could be a rouge nut or bolt inside the cage tubing.

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