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.)











Remember that this car belongs to Farmer Giles.

Thanks Bunny, looks good to me.

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

£2,700 to replace something like an exhaust seems a little bit much to me but you seem happy with it so..............
Ian

“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.

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.

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.

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?

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

You could do worse than fitting some support brackets as pioneered by Obie.

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]

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