Hi Chaps,
More hot air! Finally got my exhaust sorted :thumbs: This is only the 4th one so not too bad :wack:
Just to recap, the first one was the Dansk SS twin outlet, which I installed before the 3.8 rebuild and turned out to be no good for the new engine. The 2nd was a Fabspeed twin-out which was droning more than a Zeppelin. That one went and was replaced by a Fabspeed RS system, much better suited to the RSR engine but still droning unbearably between 2.5 - 3.0k revs.
In despair earlier this year I contacted Stuart at
http://www.aas-exhausts.co.uk who came highly recommended and he took a good look and gave me the bad news I was expecting. The exhaust gas from each set of headers were meeting in the silencer and not exiting the pipes efficiently (at the particular revs) causing the droning. He also thought the oval tips wouldn't help force the gases away from the car and he new recommended round tips. And now the worse news, he was fully booked for 6 months :frustrated:
And here we are 6 months later, I picked my car up today and the car not only sounds incredible but is going like an absolute rocket. Stuart had made a new silencer rerouting the gasses separately so they exited cleanly. The new tips look great, the are angled away from each other slightly, which also helps the acoustics.
We have kept the Fabspeed headers and heat exchangers which are a work of art in themselves.
So that's it, we're sorted. Strange thing though, the car pulls away much better from a standstill and seems much more docile whereas before it needed coaxing on the throttle to avoid stalling which I'd always put down to the aggressive RSR cams.
I was in good company, here is Simon's beautiful hillclimber again getting lightness added for his competitions.
"Lightness?", I hear you say. Yup, lightness! In the form of a bespoke tungsten exhaust.
Hmmmm :?: Oh b****r ! Wish I hadn't been told that! :wack:
Cheers for now,
Paul