think its too big

DODelaney · Post by **DODelaney** » Thu Jan 17, 2008 10:15 pm

http://www.youtube.com/watch?v=Hve0KAvsVLc

Matatak · Post by **Matatak** » Thu Jan 17, 2008 10:34 pm

ooooo bit smokey....

lol its alright tho

Suba · Post by **Suba** » Fri Jan 18, 2008 10:59 am

woops real smokey.

Mike

SUBYDAZZ · Post by **SUBYDAZZ** » Fri Jan 18, 2008 1:36 pm

Suparoo wrote:Probably to an extent.

There is a much larger volume coming out the exhaust compared to the air coming into the engine, this is due to the fact it has been mixed with a fuel and ignited, producing a hotter, less dense gas. That being said, a less dense gas also flows easier through a pipe because it creates less friction.

I find that hard to believe, the amount of fuel added in the combustions cycle is negligible compared to the amount of air that is moving through the system. Having said that, the amount of energy required to squish a gas into a pipe is not very much either.

I think you'll find that the volume of air / gas / whatever is effectively exactly the same in and out. Give me details if I'm wrong here as I'd like to know.

L-Raiser · Post by **L-Raiser** » Fri Jan 18, 2008 2:41 pm

Suba wrote:Tooooooo old , you me putting this on my subi isnt right for a 47 year old

Mike.

hehehe......Yer ONLY as old as the person you 'FEEL'...! Right Mike...? LOL

( Looks around the room for someone younger to 'feel' )

L-Raiser

Gannon · Post by **Gannon** » Fri Jan 18, 2008 3:10 pm

SUBYDAZZ wrote:the amount of fuel added in the combustions cycle is negligible compared to the amount of air that is moving through the system.

Yes that is true, but that small amount of fuel ignites with the air, and its that rapid expansion of the air/fuel mix that pushes the piston and creates torque. That expanded air is pushed out of the cylinder the following stroke and down the exhaust pipe.

Suba · Post by **Suba** » Fri Jan 18, 2008 4:52 pm

Thanks karen , I won't say how old that makes me then

Mike.
By the way I just bought the 3'' system in the pic.

Mike.

discopotato03 · Post by **discopotato03** » Sat Jan 19, 2008 5:21 pm

Suparoo wrote:Yes that is true, but that small amount of fuel ignites with the air, and its that rapid expansion of the air/fuel mix that pushes the piston and creates torque. That expanded air is pushed out of the cylinder the following stroke and down the exhaust pipe.

No , actually its the pressure in the exhausting cylinder that pushes the exhaust gas out of the cylinder . If the level of restriction in the exhaust tract makes the piston force the spent gas out it COSTS power and is known as "pumping losses" .
The EA82T "header" is a good example of this .