Re-packable Exhaust Silencers, Rally/Race Style
Turbo Mini Forums

Hi guys,

Having made a few for some ex British rally cup cars, I've made a silencer which is standard sort of mini size. All my silencers have been mild steel, with stainless perforated tubes inside (usually the bit that rots first). Don't seem to find much stainless on rally cars, I think due to the fact that stainless steel is heavier, louder in exhausts, fatigues easier than steel, and the exhaust will usually get destroyed on rough terrain before it gets rotten!

Anyway- this is my first mini one, not quite finished yet and price not set yet, would anyone be interested? If so I'll sit down and calculate pricing.

Standard features- removable end with 12 nylock nuts and captive M5 threads, 2mm thick end caps, 1.75" bore, stainless perforated inner tube, supplied with a quantity of E-glass fibre material for packing it with, the amount used will alter the sound level, will not be ready to bolt on- fixings will be different for most people as it is a custom item.

Initial (phone) pic:



Regards,
TC

www.topcatcustom.co.uk

Nylock nuts? interesting I have a couple of them on a supertrapp disc to make the car noise levels better on long runs, and man they melt.....

And Tm in general will only be intrested in performance, so weight etc, most people seem to run. 2" system

Edited by gr4h4m on 18th Jun, 2012.

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

any idea on flow rates,need some one to try one on a rolling road with it on and against a maniflow or simular

Done now needs redoing lol

It is a function over form item, hence why you never see them on road cars, just rally normally. It's 33% open perforated tube inside so should flow very well, although to be honest I can't see how there would be much difference with any decent straight through silencers, I'd say that being able to pack them yourself is a big bonus as you can chop and change the material which will have an effect on volume and flow, and we use bigger versions on 325bhp mk1 escorts doing 8000+ rpm on long distance rallies, so I don't think you'll have to worry about the nuts falling off. I'm planning on sending this one out to someone to test, as my own build is taking too long...

Also compared to my Maniflow back box this is light as a feather!

www.topcatcustom.co.uk

I think its a good idea myself, but as said 2 inch is what most people will be using on here and ive just bought a new exhaust

Matt W

I'd test a 2" version for you.

In the 13's at last!.. Just

2" with alloy outer, steel ends and stainless internal would be the baby.

Function over form maybe, but the main function we want is zero weight. Life span or ruggedness is not something we generally care about.

I have a repackable motor bike can, £25 off ebay, carbon outer and weighs less than 1 kg.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Give me a pm I will try it out and review It for you on my Turbo mini and my mpi mini it has to fit 2inch system

Regards steve

Out of interest...what packing materials are available for silencers, and what doesnt get blown into shit ?

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

in response to stevieturbo

theres quite a few materials available most contain a material within that is glass fibre

To prevent getting everything blown to shit and out the exhaust rapping wirewool round the centre pipe will prolong it getting blown to pieces :)