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Re: Brooklands Exhaust Endgame? [Re: IMHO] #709898
15/07/21 09:04 AM
15/07/21 09:04 AM
Joined: Mar 2014
Posts: 1,459
Leicestershire, UK
Bunny Offline
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Leicestershire, UK
Originally Posted by IMHO
Bunny, could you possibly post a photo of your new Brooklands exhaust system? Did you look into the front pipe entry into the can? Does the pipe fully enter and have a weld to the inner pipe as well as the can or is it just butt welded to the can outer?
The guys at P D Gough were critical of the way that the original pipes were welded to the front and rear of the boxes. So on the new ones, they belled the box end plates and extended the pipes a few cm into the can before welding which produces a much more robust joint. It does result in the internal oblique perforated pipe being a little shorter but this doesn't seem to have any detrimental effect.

These photos should give you a better idea of what else was done to strengthen the original design. (Sorry it's taken a while to post the photos.)

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

Remember that this car belongs to Farmer Giles. farmer


Andy
Re: Brooklands Exhaust Endgame? [Re: IMHO] #710055
16/07/21 06:09 AM
16/07/21 06:09 AM
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Posts: 480
Hampshire, UK
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Thanks Bunny, looks good to me.


M3W Brooklands (2015)
Moody 41 (2013)
Re: Brooklands Exhaust Endgame? [Re: IMHO] #719144
24/09/21 02:38 PM
24/09/21 02:38 PM
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After a whole lot of contemplation I decided to give MMC the opportunity of fixing this problem. The guys at Malvern have fitted two new Brooklands exhaust rear sections along with new three point mounting brackets.
The construction of the new exhausts appears to be stronger at the connection between the front pipe and the can, I’m not a sheet metal expert but I’d say it looks to be swaged and then welded - much tidier than before - I guess time will tell.

I have comparison photos and if you are interested and can post pictures on TM then PM me your email and I’ll send the photos to you.

Total cost £2.7k spend


M3W Brooklands (2015)
Moody 41 (2013)
Re: Brooklands Exhaust Endgame? [Re: IMHO] #719210
25/09/21 08:15 AM
25/09/21 08:15 AM
Joined: Jul 2014
Posts: 325
Taunton, Somerset
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£2,700 to replace something like an exhaust seems a little bit much to me but you seem happy with it so..............
Ian


Ian
Morgan Family 1929 ( KTW 1100cc )
Morgan S/S 1934
Morgan F4
M3W 2012
Morgan +4 T 1991
Re: Brooklands Exhaust Endgame? [Re: IMHO] #719238
25/09/21 11:49 AM
25/09/21 11:49 AM
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“Happy” would be a free of charge fix for a well known latent defect. But as often is the case, low usage before the end of the warranty / defects liability period saves MMC.


M3W Brooklands (2015)
Moody 41 (2013)
Re: Brooklands Exhaust Endgame? [Re: IMHO] #719440
26/09/21 08:59 PM
26/09/21 08:59 PM
Joined: Jun 2012
Posts: 1,897
United Kingdom, Lincolnshire
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On the positive side of things, you now have what looks like being the final answer to all the Brooklands exhaust system problems, the fix that it should have been in the first place if correctly designed. The owners that have this specification of Brooklands system have not experienced any further issues with it cracking, to my knowledge.

The only problem is the slightly reduced ground clearance of the mounts, watch out for speed bumps! You can justify this expense with the man maths that your limited edition Brooklands M3W, complete with sorted exhaust, will probably be worth more than the average M3W, if you should ever sell it.

Re: Brooklands Exhaust Endgame? [Re: IMHO] #719473
27/09/21 08:24 AM
27/09/21 08:24 AM
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That’s my hope, I’m certainly pleased with the structural design of the new exhausts, however there’s suddenly major resonance as the revs fall past 3500 rpm that is trying to shake the support brackets apart. doh

Stiffer brackets with more clearance on the can should reasonably contain it but I’m wondering if it’s a function of the can Internal’s?


M3W Brooklands (2015)
Moody 41 (2013)
Re: Brooklands Exhaust Endgame? [Re: IMHO] #721119
11/10/21 07:15 AM
11/10/21 07:15 AM
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So here’s a photo of the new construction of the can and the old (cracked) construction

[img]https://tm-img.com/image/30Ycc[/img]

https://tm-img.com/image/30csU


M3W Brooklands (2015)
Moody 41 (2013)
Re: Brooklands Exhaust Endgame? [Re: IMHO] #721129
11/10/21 08:37 AM
11/10/21 08:37 AM
Joined: Mar 2014
Posts: 1,459
Leicestershire, UK
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Originally Posted by IMHO
There’s suddenly major resonance as the revs fall past 3500 rpm that is trying to shake the support brackets apart. doh
You could do worse than fitting some support brackets as pioneered by Obie.
[Linked Image]


Andy
Re: Brooklands Exhaust Endgame? [Re: IMHO] #721159
11/10/21 01:20 PM
11/10/21 01:20 PM
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Hampshire, UK
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I like that! My car is going back to Morgan today to have some improvement to the bracketry, I’m really hoping they don’t just cobble about with the existing bad design.

E.g

[img]https://tm-img.com/image/3nP3t[/img]

Comments on a postcard doh


M3W Brooklands (2015)
Moody 41 (2013)
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