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Re: Bloomin' Sidepipes [Re: dodgyken] #574878
03/05/19 10:34 AM
03/05/19 10:34 AM
Joined: Sep 2007
Posts: 1,497
Oreton, Shropshire
Shooter Offline
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I always thought that the paperwork when ordering an Aero stated that side pipes were not holomogated and were an after-fit but you paid for 'side-exit preparation'.

Maybe that is just in the UK.


Aero 8 GTN. #10
Aero 8 S5.... #10
Re: Bloomin' Sidepipes [Re: Shooter] #574879
03/05/19 11:19 AM
03/05/19 11:19 AM
Joined: Aug 2013
Posts: 11,717
Salisbury, UK
Peter J Offline
Formerly known as Aldermog
Peter J  Offline
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Originally Posted By Shooter
I always thought that the paperwork when ordering an Aero stated that side pipes were not holomogated and were an after-fit but you paid for 'side-exit preparation'.

Maybe that is just in the UK.


I understand you are correct.

Of course, in the UK there is no measured noise check in the MOT, and largely little real control of after market modifications.

Tarka is rated at 87db at 4725 rpm. At Castle Combe circuit they measured 86db at about 4500 rpm. I believe the car has an absolutely standard exhaust.
As there are no silencers after the ones under the running boards below the doors I cannot see that side pipes would make much, if any, more noise.


Peter,
Tarka the 'Otter Mog
2014 Plus 8


Re: Bloomin' Sidepipes [Re: Peter J] #574886
03/05/19 11:45 AM
03/05/19 11:45 AM
Joined: Sep 2011
Posts: 11,868
Mandello del Lario, Lake Como,...
Gambalunga Offline
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Mandello del Lario, Lake Como,...
It may have to do with the regulations as to where the sound is measured.


Peter

[Linked Image]
Re: Bloomin' Sidepipes [Re: Gambalunga] #574933
03/05/19 02:30 PM
03/05/19 02:30 PM
Joined: Aug 2013
Posts: 11,717
Salisbury, UK
Peter J Offline
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Peter J  Offline
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Originally Posted By Gambalunga
It may have to do with the regulations as to where the sound is measured.


True, the UK Homologation test is "drive by", so side pipes might be louder.


Peter,
Tarka the 'Otter Mog
2014 Plus 8


Re: Bloomin' Sidepipes [Re: Peter J] #574934
03/05/19 02:32 PM
03/05/19 02:32 PM
Joined: Nov 2015
Posts: 1,325
Yorkshire
CooperMan Offline
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Originally Posted By Peter J
Originally Posted By Gambalunga
It may have to do with the regulations as to where the sound is measured.


True, the UK Homologation test is "drive by", so side pipes might be louder.


Highly likely as the sound pressure wave is travelling directly towards the microphone


Jon M
Re: Bloomin' Sidepipes [Re: CooperMan] #574951
03/05/19 03:58 PM
03/05/19 03:58 PM
Joined: Aug 2013
Posts: 11,717
Salisbury, UK
Peter J Offline
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Peter J  Offline
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Salisbury, UK
Originally Posted By CooperMan
Originally Posted By Peter J
Originally Posted By Gambalunga
It may have to do with the regulations as to where the sound is measured.


True, the UK Homologation test is "drive by", so side pipes might be louder.


Highly likely as the sound pressure wave is travelling directly towards the microphone


Perhaps the solution for the test is to simply turn the outlets so they point under the car.... then turn them back.... hide


Peter,
Tarka the 'Otter Mog
2014 Plus 8


Re: Bloomin' Sidepipes [Re: Peter J] #574952
03/05/19 04:02 PM
03/05/19 04:02 PM
Joined: Mar 2013
Posts: 1,104
Zurich, Milan
Ale_72 Offline
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Originally Posted By Peter J
I believe the car has an absolutely standard exhaust.
As there are no silencers after the ones under the running boards below the doors I cannot see that side pipes would make much, if any, more noise.

They seems different. The muffler on the side exhaust is smaller.

Rear
https://www.facebook.com/MorganAeroSS/photos/a.266120833573480/266121430240087/?type=3&theater

Side
https://www.facebook.com/MorganAeroSS/photos/a.266120833573480/266121566906740/?type=3&theater


2010 Violet Aero Supersports | 2010 White Boxster Spyder
Re: Bloomin' Sidepipes [Re: Ale_72] #574985
03/05/19 08:49 PM
03/05/19 08:49 PM
Joined: Aug 2013
Posts: 11,717
Salisbury, UK
Peter J Offline
Formerly known as Aldermog
Peter J  Offline
Formerly known as Aldermog
Member of the Inner Circle

Joined: Aug 2013
Posts: 11,717
Salisbury, UK
Tarka has a single, quite small, polished stainless covered silencer under each running board, with the outlet running to the back, ending in a double outlet. So different again from both the examples in your photos.


Peter,
Tarka the 'Otter Mog
2014 Plus 8


Re: Bloomin' Sidepipes [Re: dodgyken] #575574
07/05/19 12:51 PM
07/05/19 12:51 PM
Joined: Nov 2015
Posts: 1,325
Yorkshire
CooperMan Offline
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Yorkshire
Part of the problem may be that what we see externally as a 'silencer' my have a very different construction & baffles/restrictions internally

Some are constructed to be a Silencer, and some are just a Resonator & you can't tell from the nice shiny outer casing


Jon M
Re: Bloomin' Sidepipes [Re: dodgyken] #581401
14/06/19 11:47 AM
14/06/19 11:47 AM
Joined: Mar 2013
Posts: 1,104
Zurich, Milan
Ale_72 Offline
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Zurich, Milan
So at the end you went for the rear exhausts and ended up putting it up for sale:
https://www.autoscout24.ch/it/d/morgan-aero-8-cabriolet-occasion?vehid=6775834


2010 Violet Aero Supersports | 2010 White Boxster Spyder
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