Alternative exhaust for V6
Discussion
I did have one made when I had my S but unfortunately I don't seem to have any photos other than what was on this page.
http://deadpineapple.net/tvr/exhaust.php
I wanted an exhaust that wasn't going to be excessively loud and went for a single pipe because it was easier to manufacture and I quite liked the look. However the subsequent owner appeared to disagree and when I saw it advertised last year it was back on a twin exit system.
http://deadpineapple.net/tvr/exhaust.php
I wanted an exhaust that wasn't going to be excessively loud and went for a single pipe because it was easier to manufacture and I quite liked the look. However the subsequent owner appeared to disagree and when I saw it advertised last year it was back on a twin exit system.
robinlarry said:
........ The area would be approximately the same and it seems a single pipe would provide a bit of weight reduction.
Is it the area/volume which is important or is it something to do with the back pressure and there needing to be one pipe per bank to get the balance right? I don't know so I'm just asking.This is my "home made" exhaust using a mild steel nos V8S system I picked up for a bargain on Ebay. Picture taken before tailpipes were straightened to bring them closer together like original V6 system.....
I found it to be too noisy, a horrible sort of droning resonance or whatever in the car, so I shortened the "hockey sticks" and dropped a Cherry Bomb in which improved things enormously (imho)
I've been told it sounds ok (nothing like a Granada)
I found it to be too noisy, a horrible sort of droning resonance or whatever in the car, so I shortened the "hockey sticks" and dropped a Cherry Bomb in which improved things enormously (imho)
I've been told it sounds ok (nothing like a Granada)
Edited by phillpot on Monday 2nd March 23:16
I wonder what it would sound like..?
I remember I read that bmw used twin exhausts on the inline 6 because 2 smaller bore pipes had higher gas velocity than one large one. This was beneficial under certain conditions but can't remember what those were... Torque low down maybe ? I also read that tuning a v6 is typically done as 2 independent exhausts possibly with an X pipe.
My cosworth just had a 3" bore system but this was t35 inline 4.
I think it would probably ok not really my cup of tea but whatever floats your boat.. It may end up sounding like a Granada however..
Damian S3
I remember I read that bmw used twin exhausts on the inline 6 because 2 smaller bore pipes had higher gas velocity than one large one. This was beneficial under certain conditions but can't remember what those were... Torque low down maybe ? I also read that tuning a v6 is typically done as 2 independent exhausts possibly with an X pipe.
My cosworth just had a 3" bore system but this was t35 inline 4.
I think it would probably ok not really my cup of tea but whatever floats your boat.. It may end up sounding like a Granada however..
Damian S3
The previous owner of mine went the other way, 4 tailpipes split to either side of car like a triumph stag. It is quieter than the standard but has a great sound imho and looks good. Also has advantage that it doesn't need removing for work around diff, uj and handbrake cable area. See here www.gbsportscar.com
Kie s2 said:
Supertramp. Great band choice guys , with the splendid Breakfast in America , don't tell Glen , he will drive there ...
As soon as those couriers deliver my exhaust, I'm on it! Logically, you'd think they'd give a little bit. Or am I a dreamer?
Still waiting...........
It's raining again......
Edited by glenrobbo on Thursday 5th March 01:12
robinlarry said:
and it seems a single pipe would provide a bit of weight reduction.
Hi AllTVR were quite clever with the design of the S exhaust, first it had to fit into a tight space, they also incorporated a silencer, which gave it a sound unique to the S, It has a very crude X pipe design to give it low down torque (grunt), its the design of 2 into 1 back into 2 that dose the trick, if you just did a 2.5 single pipe on a V6 or V8 you might loose some of the low down torque. A good twin pipe with a X pipe will deliver the best torque and with the right boxes also produce a deep clean rumble.
wouldn't worry about the weight reduction.
Alan
Alan Whitaker said:
its the design of 2 into 1 back into 2 that dose the trick.
Alan
From the snippets of information I've picked up over the years I thought V engines should have at least a balance pipe between the two banks but while Googling Capri systems to get some ideas for my Taimar it appears they "like" two totally separate pipes Alan
For example.....
Hi Mike
You can do this but you do not get exhaust scavenging like you do with a X pipe system, gases will take the least resistance, at the X pipe both banks of exhaust will bleed into each other allowing gas pulses to follow the least resistance which will pull following gasses out of the system, a bit like creating a small vacuum in front of the next cylinder pulse, this will scavenge all the cylinders allowing better cylinder filling and exhaust gas removal.
Exhaust, It's a long debated subject, X or H pipe, each tuner or manufacture has there own options which is best, bit like a mine field of info.
Alan
You can do this but you do not get exhaust scavenging like you do with a X pipe system, gases will take the least resistance, at the X pipe both banks of exhaust will bleed into each other allowing gas pulses to follow the least resistance which will pull following gasses out of the system, a bit like creating a small vacuum in front of the next cylinder pulse, this will scavenge all the cylinders allowing better cylinder filling and exhaust gas removal.
Exhaust, It's a long debated subject, X or H pipe, each tuner or manufacture has there own options which is best, bit like a mine field of info.
Alan
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