9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHC4S Tailpipe - Broken Flanges
Reported or suspected cause
crack where the bracket met the pipe
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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 report identifying a cause
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.
Reported cause
I had the exact same problem with a buzz/rattle at low RPMs, and it turned out to be a crack where the bracket met the pipe.
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 taking off the tailpipes (the pipe between the mufflers and the tips) to change the tips...I can't get them off, so I was going to remove the whole assembly to get better grip on the tips and/or pipe.
Leading evidence: 'crack where the bracket met the pipe' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'crack where the bracket met the pipe' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace tips...i can't get them off' (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.
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 taking off the tailpipes (the pipe between the mufflers and the tips) to change the tips...I can't get them off, so I was going to remove the whole assembly to get better grip on the tips and/or pipe.
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
BTW I got rid of the noise by tightening the chrome pipe clamps.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace tips...i can't get them off
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 taking off the tailpipes (the pipe between the mufflers and the tips) to change the tips...I can't get them off, so I was going to remove the whole assembly to get better grip on the tips and/or pipe.
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.
9 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: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So...while removing the tailpipes from my C4S, I removed the two clamps that hold the flanges onto the pipes from the cats. Flanges look like this:
Anyways...of course the bolts on both the clamps broke (despite spraying them with penetrating oil) AND the flanges broke. They broke off so easily it made me think that they were broken before I laid my hands on them.
So I stopped there for the day. I have a rule that I will only brake two things a day. No more, no less.
How important are those flanges? New tailpipes are a fortune. Should I get a muffler shop to weld on new flanges or just leave it?
Strath: What year is your C4S? My 2005(996) has the same issue! I had some buzzy rattling at low rpm and found the condition on inspection. Mine look exactly like yours i.e.: broken for some time. Plan to weld this winter when stored. I agree with Krom probably need to be corrected. Can I ask why you were taking off your tailpipes? Do you mean the chrome extensions? BTW I got rid of the noise by tightening the chrome pipe clamps.
I had the exact same problem with a buzz/rattle at low RPMs, and it turned out to be a crack where the bracket met the pipe. A couple tack welds and it was good, I would start with that.
It is a 2002. I was taking off the tailpipes (the pipe between the mufflers and the tips) to change the tips...I can't get them off, so I was going to remove the whole assembly to get better grip on the tips and/or pipe.
I had this happen to both sides on my C4S. The tips can slide off of that section with the bracket, so no need to purchase the entire assembly. Here are the PNs
right: 996-111-351-02
left: 996-111-352-02
When I bought them in 2013 they were about $150 shipped per side from Sunset
This is a source reference. Confirm exact model applicability in the original material.
