Well that didn't work, so now what?! (exhausts)

[smgee]

Being fed up with how quiet my '06 CV8 was, but not being able to justify the cost of a new exhaust system, I thought I was being clever...

I bought a used pair of rear silencers off Ebay, sliced them open, gutted the insides and turned them into straight-through silencers by welding in a perforated pipe, packing them with sound-absorbent material and welding the cases back together again. The result? A waste of time, barely noticeable, except for a small increase in volume at full throttle - arse!

So, what are my options? I'm kinda reluctant to spend £1200 on a Wortec cat-back on an otherwise stock car that cost me £9k two years ago.

I guess I could have a go at fitting it myself (feasible on axle stands?). That way I could always sell it on, if/when I get rid of the car.

[smgee]

ARAF said:

I agree. I think you've done too good a job.

Considering the complex arrangement of internal baffles, chambers, pipes, etc, I really was expecting that the back boxes were doing most of the silencing. I didn't want to overdo it, and there are certain merits in keeping it looking stock! I was really surprised how subtle the increase in noise was.

Do used Wortecs and the like ever come up for sale?

[smgee]

Blue383 said:

I see that you're in Merseyside so if you want to have a look at mine your welcome. Car is away for the next two weeks for more mods but anytime after that.

Thanks Rick, that'd be good. I think we met at the North West gathering at the top of Parbold hill last year - mine was the really quiet CV8!!

[smgee]

Lil'RedGTO said:

Did you take any photos? I've always wondered what the inside of the stock silencers looks like.

I'm surprised that your modifications to the rear boxes didn't have more of an effect. Have you heard the car from outside? Maybe it is a good bit louder.

Yes, I took some pictures of the insides. I can post them, but it won't be before next weekend.

To be fair, under load with a wide open throttle, there is a noticeable increase inside the car with the windows shut, so it could be quite a bit louder outside. But at small throttle openings, just driving gently, I can tell no difference. Certainly nothing like the two Wortec-equipped CV8s I drove before I bought this one.

[smgee]

I'm gonna have a go from my phone...

Insides:




2 miles of long-strand glass removed:


Perf tube being welded:


Packing it:


Tacking it:

Edited by smgee on Sunday 24th August 08:50

[smgee]

I'm gonna have a go from my phone...

Insides:

Edited by smgee on Sunday 24th August 09:13