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Adsum
Newbie


Joined: 19 Mar 2016
Posts: 33



PostPosted: Sat Oct 27, 2018 2:42 pm    Post subject: Exhaust blowing Reply with quote

The exhaust has started to blow on my 997.1 … had a look underneath and found that the 'clamping sleeve, rear silencer to catalytic converter' is loose, so it moves along and exposes the gap between the two pipes its supposed to be clamping together ! The bolts on the clamping sleeve are so rusty I won't be able to undo or tighten them up, but as the clamping sleeve is so loose I would be able to slide it off if I could get the catalytic converter or the rear silencer to move along a bit. Question what's the best way to separate these two pipes so I can remove the old clamping sleeve and fit a new one?

Any advice much appreciated
 
  
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5337
Location: Brighton


PostPosted: Sat Oct 27, 2018 3:23 pm    Post subject: Reply with quote

Just to confirm you mean no. 29 here ?

https://www.deroure.com/diagrams.asp?TBL=2783&MAK=3&MDL=26&SMA=0&SMO=0&ST=&SC=0

If so you have to remove the silencer to remove the clamp .. this can end up being expense as the silencer bracket bolts corrode and snap .

If the clamp actually moves though then i suspect the bolts have rusted through and as such are not actually holding it together .

Your cheap option is to cut off whats left of the bolts only and just replace them.

We call them Coach bolts at work .
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Adsum
Newbie


Joined: 19 Mar 2016
Posts: 33



PostPosted: Sat Oct 27, 2018 6:28 pm    Post subject: Reply with quote

Hi deMort, Yep that's right No. 29, the clamp moves, it slid off towards the Cat and exposed the gap between the two pipes it was supposed to be clamping, that caused the blowing from the exhaust... I've pushed it back so it's in the correct position but it's still loose and the bolts are so rusty I can't tighten or loosen them
 
  
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5337
Location: Brighton


PostPosted: Sat Oct 27, 2018 6:38 pm    Post subject: Reply with quote

the bolts will have broken .. you cant move this sleeve if they havent .. try cutting and knocking them out and replaceing with any bolt long enough .. or order the correct bolts .. i think the part number was on that site i listed .
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stucart
Nürburgring


Joined: 24 Apr 2013
Posts: 493
Location: staffordshire 07 997 C4S


PostPosted: Sat Oct 27, 2018 6:53 pm    Post subject: Reply with quote

First pic new bolts fitted, in stainless steel off eBay M8x30mm if I recall correctly
Second pic This was what were left of mine , new coach bolt on left for comparison.
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Now - Jaguar F-Type 2014 3.0 S Quickshift ,White/ Red interior (theme here!) Loving it .
Previously - 997 C4S Tip-S, 2007, Silver/Red and Black Leather, PSE, Sports Chrono, Turbo wheels.
 



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Adsum
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Joined: 19 Mar 2016
Posts: 33



PostPosted: Sat Oct 27, 2018 7:20 pm    Post subject: Reply with quote

Thanks demort & Stucart I shall try and fix as you both suggest.... I'll let you know how I get on... thanks again
 
  
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