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Power Flex Gearbox Bush

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPower Flex Gearbox Bush

Leading reported evidence

Replace design

Suggestion or failed attempt

No successful repair reported for this finding.

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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.

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
Powerflex got wind of this and responded by changing the design.
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Power Flex Gearbox Bush

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Leading evidence: 'Replace design' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace design' (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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1 matching discussions · 4 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Replace design

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
Powerflex got wind of this and responded by changing the design.
Original post Read captured discussion
Power Flex Gearbox Bush

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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.

4 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.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link
The original design of these caused too much NVH so I modified mine and it cured the problem.
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Generation: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi Wondering if anyone can help.. I've just fitted a power flex gearbox bush and the NVH especially noise (resonance) and some vibration has gone very bad from 3500rpm upwards.. The car already has Rennline semi solid engine mounts which weren't causing any issue.. I was under the impression this bush had a redesign back in 2017 to solve this very problem. Any suggestions to improve the situation would be much appreciated.. I feel removing it might be my only option as it currently spoiling the car. I have attached pics of the bush in place Regards Johnny

POST 2Original post

The original design of these caused too much NVH so I modified mine and it cured the problem. Powerflex got wind of this and responded by changing the design. Do you have the original design or the new design? I'm guessing that's the new. Even so, you may want to look what I did (thanks to infrasilver ) and do something similar. Read all about it here: http://911uk.com/viewtopic.php?t=122405 :thumbs:

POST 3 / ORIGINAL POSTEROriginal post

Thanks Alex.. I'm pretty sure it's the new design.. as from looking at pics it does look as if the ears on the bush are thinner.. Diid trimming it down get rid of the NVH altogether or dramatically reduce it at least. Looking at the pic of the bush from my original post and then finding a few pics on the internet I think mind is the later bush.. I can't say the modification Powerflex has done has helped..

POST 4Original post

Helped massively to the point I don't notice it. Cut the middle web out the top and I bet that makes a big difference.

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