exhaust

Post by **volvo 360 GLT oner** » 12 Jul 2005 08:33 pm

dose any any know what is the best size exhaust to be fitted on the 360 2.0L GLT for the best performance ,sound and looks

Post by **340GLT** » 12 Jul 2005 08:39 pm

The standard 360 system i believe is 2" so a 2.5" straight through system should do the trick, that way you wont lose too much backpressure!! Its not easy, but try and avoid the tight bends in the system, other than that there ent much else you can do!!!

Cheers Adam

Post by **bodejodel** » 12 Jul 2005 11:13 pm

If you have a turbo, bigger = better.
On a standard 360 a 2.5" straight throug pipe is quite sufficient...
The tight bends on cheap exhausts really are flow killers...

Post by **Lonewolf** » 29 Aug 2005 03:45 am

360GLT has 1 3/4 inch exhasut, 2 1/4 is as big as you'd want to go(i settled for 2inch atm) for the stock engine for most modifications, turbo on the otherhand 3 inch is probably a good start

Post by **classicswede** » 29 Aug 2005 04:04 pm

Lonewolf wrote:360GLT has 1 3/4 inch exhasut, 2 1/4 is as big as you'd want to go(i settled for 2inch atm) for the stock engine for most modifications, turbo on the otherhand 3 inch is probably a good start

I agree 2" is the best you will get. If you had a 2.3 then 2.5" would be spot on. If you want a lot of noise pipe it in 2" up to the back and stick on a small 2.5" back box. That works well on the amazon's.

Dai

Post by **Damir130** » 30 Aug 2005 12:27 am

The standard 360 system i believe is 2" so a 2.5" straight through system should do the trick, that way you wont lose too much backpressure!

You don't need backpressure in an exhaust..Only process that comes close is scavenging and the exhaust manifold can handle that all by itself.
When you go to a larger diameter exhaust, you lose exhaust gas speed.

The best diameter for your engine is the smallest you can get. Basically exactly matching the exit diameter of the collector. Anything larger and you are just creating an extra resistance in the system (transition in diameters causes eddies and whirls that soak up energy). Only way to do it properly would be using a tapered intermediate section (slight hp increase due to nicer change from exhaust pressure to atmospheric pressure).

Post by **classicswede** » 30 Aug 2005 06:38 pm

I was sent info on some exhausts a wile ago called Vortex.
They claimed the box would swirl the exhaust gas creating a vachume.
Great idea but starting at £300 you can guess what I did with my money.

Dai

Post by **bodejodel** » 30 Aug 2005 09:21 pm

That would be something like this:

A 3" pipe with a 1" straight through pipe and a 2" swirly thing.

Post by **classicswede** » 30 Aug 2005 09:32 pm

Yes a bit like that but they used loads of tiny pipe's that they claimed was the best.
Where did you get that box from?

Dai

Post by **bodejodel** » 30 Aug 2005 09:36 pm

I got the pic from the Dutch Audi forum. It is a piece of exhaust someone put under his S8.
He dropped 2 of the for cats and kept his original back boxes and he has now over 400 BHP.
Once I have the B230FT fitted I will have that company build me a nice Free flow but not to loud stainless steel exhaust. It's right around the corner.

Post by **classicswede** » 30 Aug 2005 10:02 pm

Do you know what they charge for one of those boxes. If it is resonable I would like to try one.

Dai

Post by **Damir130** » 30 Aug 2005 11:58 pm

Vacuum swirly things are nicely marketed crap. Do you see them on F1 cars? Touring cars? Any other serious racing engine? I don't think so..I'm willing to bet good money that that contraption will actually cost you power.

Post by **classicswede** » 31 Aug 2005 08:51 pm

Damir130 wrote:Vacuum swirly things are nicely marketed crap. Do you see them on F1 cars? Touring cars? Any other serious racing engine? I don't think so..I'm willing to bet good money that that contraption will actually cost you power.

I think that is spot on. But I would like to compare dyno results and see for myself if there is any benifit from them.
Also I could see if there is any effect on fuel consumption.

Dai

Post by **bodejodel** » 31 Aug 2005 09:05 pm

Damir130 wrote:Vacuum swirly things are nicely marketed crap. Do you see them on F1 cars? Touring cars? Any other serious racing engine? I don't think so..I'm willing to bet good money that that contraption will actually cost you power.

LOL, that could well be... but F1 cars and Touring cars have virtually no exhaust at al.
An S8 engine will give most power too when no exhaust is fitted after the turbo.
Dunno what to think about those swirly things... I would like to see the maths about them...

Post by **RandomHero** » 31 Aug 2005 09:34 pm

Of course the S8 will have more power when no barrely exhaust is fitted. But that's not practical. You don't want to drive around in a S8 with F1 sound. So it's probably a good solution otherwise it wouldn't be built under such an expensive car.

exhaust

whot would yo do

exhaust