LOUDER EXHAUST?

P

peeesix

New Member
Hi guys, i have a 3500 auto and i love the sound of a V8 and for sure so does every p6 owner.
The thing is, with the standard exhaust, its just a bit to quiet! i would really like to release a real raunchy V8 sound.
I would like to know the best way to go about this? maybe a "cherry bomb"
(if not too loud!) if so, how to fit? where to fit? what to remove?
Looking forward to hear your suggestions on this one..cheers
 
I needed a new exhaust for my V8 auto so I had a stainless system made and basically the garage asked me how loud I wanted it! It was quite hard to describe the sound other than I wanted to enhance the V8 noise and that's exactly what they did........but don't ask me how :LOL:
 
peeesix wrote,...
I would like to know the best way to go about this? maybe a "cherry bomb"
(if not too loud!) if so, how to fit? where to fit? what to remove?
Click to expand...

In original trip, the V8 was fitted with a baffled muffler then a resonator at the rear. You could replace the former with a flow through muffler which would increase the volume of the exhaust note.
I wouldn't go for a cherry bomb as that will make the exhaust note very raspy which to my ears does not sound good.

Ron.
 
chop the rear silencer out, and replace with a bit of pipe.

sorted.

I did this, and also split the pipe so I had a tailpipe coming out of both sides at the back.

It sounds awesome :D And has slightly more go via the bum-dyno system
 
My 3500 Auto is now running a 3 and a bit inch diameter system front to back, with commensurately sized fabricated manifolds. There is one silencer only in the sytem and it's a straight through one of the largest size that will fit in the space alongside the boot where the original rear one came out of. There is a rasp at about 1,800 rpm and another even more satisfying one at around 2200 rpm. So town driving is to die for 8) But at 70 on the motorway you can't hear a thing inside the car - oh and it passes MoT's!

Not a cheap solution though...

Chris
 
chrisyork wrote,...
But at 70 on the motorway you can't hear a thing inside the car
Click to expand...

That is quite the opposite to mine Chris. I have this lovely deep V8 roar inside at 70, and much louder outside :wink:

Ron.
 
Agree, cut out the rear resinator, replace with a straight piece of exhaust pipe and off you go, makes a lovely sound when crusing at 60 and 80k's

I know its louder as my next door neighbour has a 3500s with a rear resinator, and we both agree mine is louder!!

Best thing is that becuase there both loudish and Rovers, the other neighbours dont know which one of us is making the noise unless there looking out there window!
 
Rather a rarity to have a street with two P6 v8's in it , nowadays .
Not talkin about a fella with a dozen sittin on his front lawn in various states of return to normal , either .
 
GRTV8 said:
Rather a rarity to have a street with two P6 v8's in it , nowadays .
Not talkin about a fella with a dozen sittin on his front lawn in various states of return to normal , either .
Click to expand...

You would think so, wouldnt you, but each time he turned his car over in the drive way i fell in love with the sound, they make have a great V8 rumble and sound a heap better then the new plastic V8's....

Also, you dont see many on the roads in Melbourne, very few and far betwwen, even though i believe its the most common car registed in the Rover Car Club, or at least not in the Northern Suburbs of Melbourne
 
I saw a modification in an American magazine where you fit a cable operated flapper
valve in your downpipes that you can open at will to give you the full orchestral open-pipes
thunder.
PC Plod may frown upon it, though.....
 
I saw a modification in an American magazine where you fit a cable operated flapper
valve in your downpipes that you can open at will to give you the full orchestral open-pipes
thunder.
Click to expand...

I want that! Do you still have the magazine? Do you know if they were welded in, or clamped into the system? Who makes them? New Maseratis do this as standard, open headers away from a standing start at the touch of a button, sounds rorty!
 
I was always thinking that if you replaced either the muffler of the resonator with just a length of straight pipe, then that would make it quite "drummy" inside the car... :?

Is this not the case?

Ron.
 
Mine's not particularly drummy. At motorway speeds the loudest sound is the wind round the front of the quarterlight, unless you're really booting it :D
 
OK, but i imagine that in a carb fuelled car they change the exhaust back pressure and the moment you open up the pipes your carefully-set-up-on-a-dyno fuelling all of a sudden becomes too lean and you just end up with flat spots and hesitation at the very moment you want to impress! :oops:
 
Demetris said:
OK, but i imagine that in a carb fuelled car they change the exhaust back pressure and the moment you open up the pipes your carefully-set-up-on-a-dyno fuelling all of a sudden becomes too lean and you just end up with flat spots and hesitation at the very moment you want to impress
Click to expand...

I agree. Also the same can be said for camshafts as well. I've found on my particular Rover the OE exhaust with the OE camshaft and fuelling etc is the best option. Even with 3-silencers I got a very nice deep sound from the exhaust 8) Sadly, I have a performance cam' and a different exhaust set-up at mo which is a compromise at best. It still goes well :shock: , but has a flat spot here and there on a moderate throttle which wasn't there with the factory set-up. I'm sure this will be remedied with the standard cam' and exhaust system refitted in due course.
 
Hi Ron

Mine is exactly what I want inside the car. Inspiring round town and quiet on a long fast journey. With plain pipes all the way back to the rear straight through silencer in the conventional place, I'm fairly sure that most of the sound inside the car is squeezing in around the sides of the tank and up through the parcel shelf and rear 1/4 trim. If I ever wanted it any quieter, I'm pretty sure that would be easy to achieve.

I'll get round to doing you all a recording at some stage, but I need someone else to do that - I'm quite lost in all this MP3 file business!

Chris
 
mrtask said:
I saw a modification in an American magazine where you fit a cable operated flapper
valve in your downpipes that you can open at will to give you the full orchestral open-pipes
thunder.
Click to expand...

I want that! Do you still have the magazine? Do you know if they were welded in, or clamped into the system? Who makes them? New Maseratis do this as standard, open headers away from a standing start at the touch of a button, sounds rorty!
Click to expand...

I have such a device fitted as standard in my pictured GTO TT, a button on the dash labeled silent for more discrete motoring.

Graeme
 
SydneyRoverP6B said:
peeesix wrote,...
I would like to know the best way to go about this? maybe a "cherry bomb"
(if not too loud!) if so, how to fit? where to fit? what to remove?
Click to expand...

In original trip, the V8 was fitted with a baffled muffler then a resonator at the rear. You could replace the former with a flow through muffler which would increase the volume of the exhaust note.
I wouldn't go for a cherry bomb as that will make the exhaust note very raspy which to my ears does not sound good.

Ron.
Click to expand...
Thanks for your input Ron, i will now rethink the cherrybomb as i dont want a raspy sound.
I suppose the sound i am looking for is a more of a deeper v8 roar with a little more volume than standard.
I am thinking maybe the straight through to replace the rear resonator is the way to go.
 
1396midget said:
chop the rear silencer out, and replace with a bit of pipe.

sorted.

I did this, and also split the pipe so I had a tailpipe coming out of both sides at the back.

It sounds awesome :D And has slightly more go via the bum-dyno system
Click to expand...
I am thinking your suggestion is the way to go on this as i dont want to go to great expence.
Do you think you can elaborate a little on how you did yours? like, where to chop the pipe and what length of pipe/diameter and how you fixed in place?
Cheers Rob.
 
You must log in or register to reply here.
Back
Top