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Post Info TOPIC: Bespoke Peerless twin exhaust system
Gary Stretton

Bespoke Peerless twin exhaust system

Hello all,

I'm in discussion with a company interested in the possibility of creating a bespoke system for our cars.

As we all know, ground clearance and heat are enemies one and two to a PW.

My personal preference is for a twin pipe system using smaller bore pipes underneath (ground clearance), avoiding as much of the gearbox (heat) as possible and then running either side of the transmission tunnel area before exiting via twin rear boxes and pipes.

Anyone interested or have suggestions as to the best solution for our cars?

The idea is to create an off the shelf system rather than us all cobbling bits of pipe together from different sources as best we can.

All the best, Gary

nigel c


Hi Gary,

I did run a two pipe system for some time. I used the TR 4 into 2 steel manifold and then straight back to an Austin Healey 6 back box as this had a 2 in 2 out fitting.

the main pipes were fabricated out of 3mm wall thickness and work OK except for the speed bumps in the lake district which (when hit at 50!) tends to flatten them some what

I dont think you will get a rear box either side of the spare wheel carrier at the back as this is off-set within the space......and there aint no other space left

after the Lakes I built this baby (some of you may have seen/laughed at this before!) took a long time to get right and you would not believe the "linear growth" in an exhaust system of this nature...yea I agree it aint natural

and I dont think there;s much cloth saved by running two pipes down the tunel. I can only run one at the bottom of the prop.

The only real sticking point is the box section across the A post area of the chassis. I'm sure (but havent tried it yet) when your building/modifying your chassis' that this box can run on the inside i.e. like an MG midget. It wouldnt be in the way under your legs but would help clearance.

Or perhaps split the depth between inside and out?

Still I know it doesnt help those already (like mine) on the road..So I took this routeconfuse



Mike R-F


Unfortunately I can't contribute any relevent knowledge but I WOULD be interested in purchasing an off-the-shelf system and would be happy to add to the demand if it helps persuade a possible manufacturer.


nigel c


good to hear from you Mike, i bet that exhaustive resto's nearly finished and we'll be seeing you out and about this year rofl.gif

Mike RF


Sadly two house moves and 4 other restoration projects have held me up a bit. The good news is I now have a fully functioning workshop and as soon as I clear out all the junk left over from the aforementioned house moves, I'll be making a start. Not sure if I mentioned it before but I have actually rebuilt the chassis so at the very least, I now have something solid to bolt bits to smile

I'll probably be looking at getting a complete shell as the body on mine has suffered so much accident damage, it would take forever to fix. Not the route I'd like to take but I would like to see her finished in my lifetime.

Gary Stretton



Company involved initially are too busy for the next ?? months. I have another contact however, and will pursue forthwith.

Exhausting work, don't you know...

All the best,


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