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Muffler Rattle

jporter

By jporter
in 996 TT, 996 TT S, 996 GT2

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jporter Member

jporter

Posted
Posted

I have a 01 996TT with about 35K miles and I noticed a rattle sound from the muffler area. I traced this to the shields that are attached to the muffler. Three of the attachment points that appear (not sure) to be welded to the muffler have detached. The result is that one of the shields rattles when starting to move from a standstill.

Has anyone had this happen to their cars and found a suitable fix to the problem? I would also appreciate any comments regarding how the shields are actually attached to the muffler – I could not get a good view of the attachment as I didn't want to try to remove the shield since the hex head bolts are very rusty.

Sunnyside Member

Sunnyside

Posted
Posted (edited)

I have a 01 996TT with about 35K miles and I noticed a rattle sound from the muffler area. I traced this to the shields that are attached to the muffler. Three of the attachment points that appear (not sure) to be welded to the muffler have detached. The result is that one of the shields rattles when starting to move from a standstill.

Has anyone had this happen to their cars and found a suitable fix to the problem? I would also appreciate any comments regarding how the shields are actually attached to the muffler – I could not get a good view of the attachment as I didn't want to try to remove the shield since the hex head bolts are very rusty.

Hi,

They are held on with set screws and captive nuts. The captive nuts are held in place with clips. The shields are not welded on.

If you want to replace the screws you will have to remove the whole exhaust. They are very prone to corrosion even thought they are stainless!! Typical Porsche $hit fixings. As you will have found out already even the nuts on the Turbo holding the full exhaust /silencer will be very badly corroded.

Its a pain job to do , so it depends on how bad the rattle is.

If you go to the trouble of removing the exhaust why not think about fitting a sports exhaust??

Frank

Edited by Sunnyside
  • Upvote 1
jporter Member

jporter

Posted
  • Author
Posted

Thanks for the information. This will help in coming up with a fix.

I was also thinking about a sport exhaust, but then that would lead to a flash of the ECU, replacing the diverter valves, adding new turbos, lowering the car, …:D

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