Kevin.payne.15 Posted January 26, 2017 Report Share Posted January 26, 2017 Has anyone swapped from a semi sports exhaust to the club shop twin pipe? Does it make much difference? I already have a 631 manifold but never swapped the rear box. Is it that much noisier ? Thanks Kevin Link to comment Share on other sites More sharing options...
Clive Posted January 26, 2017 Report Share Posted January 26, 2017 If it is a semi-sports box,hey are nearly as loud as the wheelbarrow type. Which I find too noisy when doing longer trips, especially on motorway where the drone drives me nuts. Which is why it has been removed..... If the std GT6 rear box they usually are not exactly quiet, but nowhere near as noisy as any of he sports systems. And they are unlikely to make any difference to how the car drives. In my case I am fitting a rear box pilfered from an escort RS Turbo, via a 21/4" pipe. Probably a slim cherry bomb between the chassis rails. That should be fairly sensible in terms of noise, and freeflowing enough to cope with expected power (rather more than a std spitfire or GT6) Link to comment Share on other sites More sharing options...
dougbgt6 Posted January 26, 2017 Report Share Posted January 26, 2017 Interesting, So, I have a dying, standard stainless system, the baffles have gone, dreadful drone at certain revs, I don't want to frighten the neighbours but I do want a nice "noise". What should I go for? Link to comment Share on other sites More sharing options...
Guest Posted January 27, 2017 Report Share Posted January 27, 2017 Doug. I have a single s/s rear box on my Vitesse; it does the job, complements the six cylinder engine note wise and is not excessively loud. Ticks all my boxes. Regards. Richard. Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 27, 2017 Report Share Posted January 27, 2017 mine 1600 had a 631 , 2" pipes and a club semi sports single and it really amazing on song , the wheel barrow twin was more like a hair drier and nothing like as crisp didnt stay on for long this was the smaller semi , the inlet just a neat fit 'inside' the tail tube a real yippee to drive ....yes i miss it Pete Link to comment Share on other sites More sharing options...
dave.vitesse Posted January 27, 2017 Report Share Posted January 27, 2017 Used the twins on my wife's 2.5 Gitfire a number of years ago, this was noisy above 3K RPM. But as I was using high gearing this meant it was running below 3K at 70 MPH, so OK on long run. On the standard, geared, GT6 if you are not concerned about the noise over a long distance then the twins sound great. Currently using a John Kipping single box sports box on the Vitesse, not too noisy. Took the sports system off the TR7 as the centre box resonates at around 3K RPM. Too noisy for me went driving long distance. One of the reasons I have TR7's is for long distance driving, 200-400 miles. I am getting old! Dave Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 27, 2017 Report Share Posted January 27, 2017 no idea what these are like but seems good for a only a £49.99p http://stores.ebay.co.uk/faslanestyling-europe/Back-Boxes-/_i.html?_fsub=5101463016&_sid=1088124356&_trksid=p4634.c0.m322 just need the inlet size ,there was a triumph listing but cant find it now Pete Link to comment Share on other sites More sharing options...
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