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Planet-9

Exhaust Manifold Bolts & Anti-Seize

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5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHExhaust Manifold Bolts & Anti-Seize

Leading reported evidence

Lubricate threads

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Performed · outcome unconfirmed

From the sounds of it no one reduces the torque for lubricated threads.

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize
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Leading evidence: 'Lubricate threads' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Lubricate threads' (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.

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1 matching discussions · 5 captured posts examined · 1 partial discussions

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Use anti-seize

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes
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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
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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

I used anti-seize for the bolts between the exhaust manifold and the pipe that goes back to the silencer.

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Replace headers

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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
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Suggestion

Should an anti-seize compound be used on the exhaust manifold bolts when replacing the headers?

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Use on the exhaust manifold bolts

Suggestion or failed attempt

No successful repair reported for this finding.

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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
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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

Should an anti-seize compound be used on the exhaust manifold bolts when replacing the headers?

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Use should the torque value be reduced

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
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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

And if anti-seize is used should the torque value be reduced?

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize
Frequently discussed actions (5)

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

Lubricate threads

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

From the sounds of it no one reduces the torque for lubricated threads.

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Replace headers

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

Should an anti-seize compound be used on the exhaust manifold bolts when replacing the headers?

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Use anti-seize

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

I used anti-seize for the bolts between the exhaust manifold and the pipe that goes back to the silencer.

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Use on the exhaust manifold 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

Should an anti-seize compound be used on the exhaust manifold bolts when replacing the headers?

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize

Use should the torque value be reduced

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

And if anti-seize is used should the torque value be reduced?

Original post Read captured discussion
Exhaust Manifold Bolts & Anti-Seize
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.

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

  • Planet-9: 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I don't see anything mentioned by Porsche on this or find anything in the numerous exhaust install articles. All I found was that Porsche recommends replacing them each time. Good practice in any case. Should an anti-seize compound be used on the exhaust manifold bolts when replacing the headers? Is there any particular type preferred, nickel, copper, moly? And if anti-seize is used should the torque value be reduced? Maybe not an issue for P-cars but I've always found that these pesky things want to rust, freeze up and snap off on other cars.

POST 2Original post

I'm not sure how antiseeze would stand up to that heat. I hope someone will chime in with some good data on this because I've thought of doing the same, because I like to rotate my exhaust systems regularly...

POST 3Original post

I used anti-seize for the bolts between the exhaust manifold and the pipe that goes back to the silencer. There is no need for anti-seize for the bolts that attach the exhaust manifold to the heads. The heads are aluminum, and the bolts therefore cannot rust themselves to the head as could occur with the usual iron block.

POST 4Original post

Thanks for the input. A material and process guy whose an aquaintance also got back with me today. He indicated for steel bolts in aluminum either the copper based type products already mentioned or a molybdenum sulfide type anti-seize would be good. Since this is in aluminum the temperatures won't be high enough to do more than cooked off the oil used as a carrier for the friction modifiers. From the sounds of it no one reduces the torque for lubricated threads. Given the low torque called for it probably doesn't make a significant difference.

POST 5Original post

For GB who likes to rotate exhausts having the bolts corrode likely won't be the problem. Wearing out the threads in the heads maybe. Little anti-seize might help there too.

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