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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRattling valve on Designtek/topgear switchable exhaust
Leading reported evidence
Adjust away
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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.
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Suggestion · Original poster
There was also a slight leak at the join of one of the tip pipes so I have taken both off, resealed and adjusted away from the other part of the exhaust so hopefully no more rubbing.
Rattling valve on Designtek/topgear switchable exhaust
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Leading evidence: 'Adjust away' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'topgear make designtek, spyder etc' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Adjust away' (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.
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
Have wound the threaded bit in a bit but then it pulls the stop away from the stopper (picture with screwdriver pointing at it) Does the threaded bar need to be adjusted so that it pushes the stopper hard up against the stop point or tightened so that it stops just short of the stop?
Rattling valve on Designtek/topgear switchable exhaust
topgear make designtek, spyder etc
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
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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 suspect a cause
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.
Rattling valve on Designtek/topgear switchable exhaust
Replace a/c compressor
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
No idea when I will get to test it however, new baby arriving next Tuesday and lots of jobs the wife has got me doing plus I need to replace the a/c compressor on the R53 :sad:
Rattling valve on Designtek/topgear switchable exhaust
Run car upto operating temp
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
you have the pu off to do this so adjust and run the car upto operating temp ..
Rattling valve on Designtek/topgear switchable exhaust
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.
Adjust away
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
There was also a slight leak at the join of one of the tip pipes so I have taken both off, resealed and adjusted away from the other part of the exhaust so hopefully no more rubbing.
Rattling valve on Designtek/topgear switchable exhaust
Adjust so
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
Have wound the threaded bit in a bit but then it pulls the stop away from the stopper (picture with screwdriver pointing at it) Does the threaded bar need to be adjusted so that it pushes the stopper hard up against the stop point or tightened so that it stops just short of the stop?
Rattling valve on Designtek/topgear switchable exhaust
Replace a/c compressor
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 idea when I will get to test it however, new baby arriving next Tuesday and lots of jobs the wife has got me doing plus I need to replace the a/c compressor on the R53 :sad:
Rattling valve on Designtek/topgear switchable exhaust
Tighten so
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
Have wound the threaded bit in a bit but then it pulls the stop away from the stopper (picture with screwdriver pointing at it) Does the threaded bar need to be adjusted so that it pushes the stopper hard up against the stop point or tightened so that it stops just short of the stop?
Rattling valve on Designtek/topgear switchable exhaust
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.
12 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: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Gents,
My desgintek (which is identical to topgear) switchable exhaust valve(s) rattle when the system has warmed up and they are in their open position.
The exhausts probably have no more than 5k miles on. Has anyone else had similar problem? Any suggested fixes?
Loathed just to by another switchable exhaust for the same thing to happen again in short order.
Thanks
Porsche exhaust valves have a rod on the valve each side that's adjustable ..
Cant say with this system as i don't know it but if so then you need to adjust to put a bit more tension on the rods .
I suspect topgear make Designtek, Spyder etc. The also own Powerflow / Eurosport / Longlife exhaust centres
This is the linkage on my Spyder. (right click open in new window to see a decent size..)
Thanks for that picture Jake.
DeMort I can't see if the rods are adjustable but if they are do I want to adjust them to make them shorter or longer?
Thanks!
On the Porsche system the rod has a nut on it , you undo and either lengthen or shorten the rod as required .
Porsche and the sports exhaust on is valve in the open position .. it's the default position if the vacuum system fails .. rod can be loose and rattle .
I've not adjusted one of these since i was at OPC so a long time ago but logically you would lengthen it a bit to put tension on it .. that would stop it rattling .
Shortening would merely pull the diaphragm down a bit and i don't think there is enough tension on it to stop the rod being loose .
Don't go mad .. its small adjustments
so just having a fiddle with the adjustment bit. Have wound the threaded bit in a bit but then it pulls the stop away from the stopper (picture with screwdriver pointing at it) Does the threaded bar need to be adjusted so that it pushes the stopper hard up against the stop point or tightened so that it stops just short of the stop?
Try both .. you have the pu off to do this so adjust and run the car upto operating temp .. hold the revs at 1500 , 2K .. 2.5k and 3k .. if no buzz or rattle then its fixed .
My thoughts are it can actually be either .. hard up has metal against metal which could in theory cause a rattle ..
loose from the stop and there might not be enough tension and cause a rattle ..
When cold though .. tap the valve in different places with your hand .. that's how i normally find noises anyways .
So on closer inspection I could see that one of the exhaust tip pipes was touching another part of the exhaust and the other tip pipe was very close to touching. I can only assume that when warm and the system had expanded the pipes that were very close would rub/rattle together? There was also a slight leak at the join of one of the tip pipes so I have taken both off, resealed and adjusted away from the other part of the exhaust so hopefully no more rubbing.
No idea when I will get to test it however, new baby arriving next Tuesday and lots of jobs the wife has got me doing plus I need to replace the a/c compressor on the R53 :sad:
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