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Forums34
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Aug 24th, 2023
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Joined: Jul 2013
Posts: 3,659 Likes: 48
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jul 2013
Posts: 3,659 Likes: 48 |
The bevel box noise is a screaming in a particular road speed band typically around 50-70 mph.
A rattle may well be the fuel vapour canister mounted on the rear bulkhead near to the seatbet top mounts.
Red Leader 
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Joined: Oct 2016
Posts: 1,544
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Oct 2016
Posts: 1,544 |
Bevel box sounds like a air raid siren! high pitch whine !! the clicking is usually a small valve device for the fuel system! it located under the plastic tray in the rear, the valve is held by 1 fixing and bounces up and down causing the noise, add cable ties to stop it moving.... 
Last edited by skullmog; 25/11/17 08:26 AM.
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Joined: Oct 2016
Posts: 1,544
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Oct 2016
Posts: 1,544 |
Chris can type faster than me! 
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Joined: Jul 2013
Posts: 3,659 Likes: 48
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jul 2013
Posts: 3,659 Likes: 48 |
Red Leader
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Joined: Feb 2016
Posts: 7,921 Likes: 217
Talk Morgan Guru
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Talk Morgan Guru
Joined: Feb 2016
Posts: 7,921 Likes: 217 |
The bevel box noise is a screaming in a particular road speed band typically around 50-70 mph.
A rattle may well be the fuel vapour canister mounted on the rear bulkhead near to the seatbet top mounts.
I thought the clicking sound was the tiny roll over valve. If so it's easily accessible mounted high up above the left hand fuel tank (part 6 below), and not behind any panel - on my 2016 car at least.  Had it make a slight rattle once or twice but not bad enough to justify any correction.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Oct 2016
Posts: 1,544
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Oct 2016
Posts: 1,544 |
If you can see your's your boot liner is missing (panel)!
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Joined: May 2012
Posts: 1,789 Likes: 3
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2012
Posts: 1,789 Likes: 3 |
My BB sounds like a blue whale when warm around 50-60 mph.
It is also possible to play a tune with it by adjusting the road speed slightly up or down.
Something to amuse myself with on those long motorway journeys.
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Joined: Feb 2016
Posts: 7,921 Likes: 217
Talk Morgan Guru
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Talk Morgan Guru
Joined: Feb 2016
Posts: 7,921 Likes: 217 |
If you can see your's your boot liner is missing (panel)! Sorry misread your previous post  Having just removed my centre seatbelt protection panel to replace rusty bolts I initially though that.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Oct 2015
Posts: 1,490
Has a lot to Say!
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Has a lot to Say!
Joined: Oct 2015
Posts: 1,490 |
My rollover valve rattled like crazy when I’d have a passenger. Seems the change in weight distribution made the difference. At first I tried cable ties to keep it stable. That helped but didn’t solve the problem. Recently I took two pieces of Dynomat, stick them together (glue side to glue side) to make a thick pad, and wrapped that around the valve using cable ties. Problem solved.
The Original Ken
11,000 miles.
2014 BMW R9T
2005 Saabaru
2005 Saabaru
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Joined: Aug 2017
Posts: 159
L - Learner Plates On
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L - Learner Plates On
Joined: Aug 2017
Posts: 159 |
Picked up my new M3W today, and by the sound of it I am getting the same banging noise on hard acceleration (plus the sort of Bevel Box whine that I thought MMC had eliminated a while ago). I will have to look at the cost of securing the Box to the chassis as suggested above.
Otherwise, it's fantastic.
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