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911uk

haeder to cat bolts

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9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHhaeder to cat bolts

Leading reported evidence

Replace 6 poxy bolts

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts
Read full discussion summary

Leading evidence: 'Replace 6 poxy bolts' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 6 poxy bolts' (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 · 9 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace corroded bolts header

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

looking to replace corroded bolts header to cat 3 each side,common on 996 i believe, wondering if any one had any experiance of getting bolts out,mechanic at ninemeister said they will knock out with punch but was going to take cats of to do job and replace with stainless bolts and new gaskets,any info would be appreciated.phoned porsche and design 911 quoted £55 for 6 nuts and bolts and 2 new gaskets :?

haeder to cat bolts

Replace im sure i can

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts

Replace rad you told me would be impossible

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts

Replace with stainless,give me bit of head start

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts
Frequently discussed actions (8)

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

Replace 6 poxy bolts

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts

Replace corroded bolts header

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

looking to replace corroded bolts header to cat 3 each side,common on 996 i believe, wondering if any one had any experiance of getting bolts out,mechanic at ninemeister said they will knock out with punch but was going to take cats of to do job and replace with stainless bolts and new gaskets,any info would be appreciated.phoned porsche and design 911 quoted £55 for 6 nuts and bolts and 2 new gaskets :?

haeder to cat bolts

Replace im sure i can

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts

Replace rad you told me would be impossible

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts

Replace with stainless,give me bit of head start

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

as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

haeder to cat bolts

Use plenty of copperslip

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

I was going to use plenty of copperslip on mine to try to prevent this.

haeder to cat bolts

Use shakeproof washer

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

Suppose you could use a shakeproof washer.

haeder to cat bolts

Use some aluslip like copper slip

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

no i hav some stainless philidas locking nuts and stainless whashers,i plan on using some aluslip like copper slip but higher heat resistance,was wondering if any one had issues getting bolts out,was told by mechanic they would punch out ?

haeder to cat bolts
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.

9 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: 20261026T094842Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

looking to replace corroded bolts header to cat 3 each side,common on 996 i believe, wondering if any one had any experiance of getting bolts out,mechanic at ninemeister said they will knock out with punch but was going to take cats of to do job and replace with stainless bolts and new gaskets,any info would be appreciated.phoned porsche and design 911 quoted £55 for 6 nuts and bolts and 2 new gaskets :? ,got stainless,steel locking nuts and bolts from ebay £14 and £10 for two gaskets the ones porsche where selling are only galvanised or zinc plated robbing b--tards

POST 2Original post

Hi I bought some stainless bolts for my 993 exhaust today. In fact the nuts are better off being a bronze zinc alloy or copper coated steel I think. The problem is that stainless "galls" which means it welds to itself and can be very difficult to remove. I was going to use plenty of copperslip on mine to try to prevent this. Berni

POST 3Original post

Just make sure your nuts arn't Nylock as they will melt and loose the locking feature, the OPC nuts have the "mechanical" locking mechanism but they are terrible for corroding. Suppose you could use a shakeproof washer.

POST 4 / ORIGINAL POSTEROriginal post

nuts no i hav some stainless philidas locking nuts and stainless whashers,i plan on using some aluslip like copper slip but higher heat resistance,was wondering if any one had issues getting bolts out,was told by mechanic they would punch out ?

POST 5Original post

If you search the forum there are a number of historic threads relating to this topic and it seems that this particular course of action comes with various levels of woe! Good luck with this one! M :thumb:

POST 6 / ORIGINAL POSTEROriginal post

made a start as there is only really one nut left on eaxh side of cat i thought it would be easy to remove cats to do work,so i made a start and cut off clamp bolts on cats ***** metal cut like butter and replaced with stainless,give me bit of head start when i recieve other parts for job,when i phoned neinmaester to ask if there was any special bolts for job he started laughing t-sser and said look forward to picking your car up in couple of weeks.i told if i can change the rad you told me would be impossible for me to change im sure i can replace 6 poxy bolts that shut him up.these guys must think they are talking to complete idiots,so will keep you posted on my progress.

POST 7Original post

patgas - the fasteners between the headers and cat pipes are not bolts but captive studs which are fixed into the cat pipe flange. They are pressed into the steel flange. The nuts are on the header side. You will need to split the joint, I suggest grinding them flush with the gasket face side once split and driving them out with a punch, since the knurling is straight. The other option is to drill them out once you've ground them flush. Centre pop the stud then drill with a quality HSS drill as the studs are fabricated from very hard steel. Average quality drills will just blunt up and glow red! HTH

POST 8Original post

Design 911 did the job for me which took an hour. The bolts/flange had to be heated before knocking them out! If you take a look under the rear end, all the nuts are the same...probably their worst design feature!!

POST 9 / ORIGINAL POSTEROriginal post

yep yes thanks i new they where studs but i am going to remove cats for ease heat up and try and punch out,shouldnt be a problem and if all else fails will drill them and i am going to replace with stainless nuts and bolts and cover in aluslip,cats will come off easy because hav recenltly put sports boxes on cheers for input,sorry when i said there was only one nut left on each side of cat i meant flange.

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