911uk

Are the exhaust bolts M8 x 35mm?

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YOUR RESEARCHAre the exhaust bolts M8 x 35mm?

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Install about 6 months ago and had begun

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Performed · outcome unconfirmed
to silencer bolts fitted about 6 months ago and had begun to start corroding.
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Are the exhaust bolts M8 x 35mm?

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Leading evidence: 'Install about 6 months ago and had begun' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install about 6 months ago and had begun' (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 clamps

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Suggestion
Funnily enough I picked up various clamps and baskets so that I can re-gasket and replace clamps on my 997s exhaust as it's leaking!
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Are the exhaust bolts M8 x 35mm?

Frequently discussed actions (2)

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Install about 6 months ago and had begun

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
to silencer bolts fitted about 6 months ago and had begun to start corroding.
Original post Read captured discussion
Are the exhaust bolts M8 x 35mm?

Replace clamps

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
Funnily enough I picked up various clamps and baskets so that I can re-gasket and replace clamps on my 997s exhaust as it's leaking!
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Are the exhaust bolts M8 x 35mm?

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

911uk: 1 discussions

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Generation: 20261026T234245Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

And if so how many will I need please? I've just ordered TopGear CATS so I'll be replacing all the fixing bolts as I'm guessing I'll need my angle grinder more than my spanner when I dismantle things. I'm not touching the manifold by the way!!

POST 2Original post

Yes they are M8 x 35MM. Part number 900 074 287 02 Six of them in total. Since you're asking I assume you will source your own. But for the benefit of anyone else reading this, do not waste your money on these from Porsche . They charge over £5 a bolt! When I took my cats of I nipped into Homebase (nearest place) and got some yellow zinc high tensile M8 x 35MM ones. They looked exactly the same as the Porsche ones and cost about £5 for 8...

POST 3Original post

stainless bolts, brass nuts :thumb:

POST 4 / ORIGINAL POSTEROriginal post

Thanks both

POST 5Original post

Are they the exhaust flange bolts & would they be the same on a 991

POST 6Original post

Bolts Funnily enough I picked up various clamps and baskets so that I can re-gasket and replace clamps on my 997s exhaust as it's leaking! Picked up the bits from design 911 today but wouldn't pay the £3 per bolt they wanted! Having just read this thread iv3 just ordered 6x M8 x 35mm marine grade Ss nuts and bolts for the very job you are proposing. Just cost me £2.99 with free P&p from our friendly auction site.

POST 7Original post

My 997 (so slightly off subject) had new steel cat. to silencer bolts fitted about 6 months ago and had begun to start corroding. Replaced them all (6) with stainless steel about 5 weeks ago. 30 mm bolts and All Metal Locking Nuts via internet. 25 mm bolts from local screw fixing shop. https://www.ebay.co.uk/itm/ALL-META...hash=item25a8fc6504:m:mXNVEkt7gyAPgTm5wkX0HOA Went for Lock Nuts rather than plain. These suckers go on tight and should never fall off. Lower bolts easy. Top, difficult.

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