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Looking to change the spec of the car to do some road rallying. I currently run a maniflow single box and although it is without doubt loud. It does sound nice.

In a effort to quiet the car down a little, I am looking at:

A twin box RC40.

A twin box maniflow system.

A Summerford three box "works" system.

I appreciate that the noise also can equate to the engine spec, it's a faily well tuned 1300 but witll the works one pass the 98 db limits? anyone know.

The RC 40 is the ultimate choice when quieting it down, but I do still want it to sound a little sporty.

I have a Sommerfor....well maniflow works exhaust but its a single rear box with a small silencer as well in the middle of the system........its noisy as hell and i doubt would pass a road rally DB test, the 3 box version may do though - ring maniflow and ask Dave if he knows the firgures

I have used in the past the somerford 'works' system which was fine for noise test, and a twin box maniflow which was fine I've fitted two somerford systems the first was a pig to fit the second much easier For price and well made i would probably favour Maniflow's own. If you don't want the modern rolled edge tailpipe they will do one for you without it.

Thanks all, much appreciated.

Guess I'm giving Maniflow a call then. The single box system I current have is very well made, I must say.

Hello,
I've a question for STR807 Somerford works exhaust owners. Do you have respray it ? Seems to me that's necessary to replace the genuine black primer for better longevity.

Been using the same single box rc40 on mine since it went on the road in 2004 .
I use the side exit stainless steel version with the large bore tailpipe but it is available centre exit with or without the big bore tail pipe and in mild steel . I believe all RC40 have stainless internals .
Noise is not horrendous , some people say the mild steel and stainless versions have differant sounds .

Fit , cannot fault the fit of a Rc40.

I agree, THe single box RC40 has been my exhaust of choice for 30 years.

M

I too have found the RC40 a great silencer. In single box form with cams up to about the 270 degree mark and in twin box for cams with longer duration.

Now you have a dilemma .
Good reviews for the daddies in the Mini exhaust world .
What do you choose ?

Dave

Ps. Why cant i get my avatar pic up

My vote is RC40 used for years never a problem........
As for the avatar your pics prob. too big shrink it down a lot and try again.