Does this theory hold water?
Turbo Mini Forums

Right, bear with me.

I have a 2.0l engine, and a sports exhaust from an R1

now, as the the 2.0 engine is twice as big as the R1, yet revs half as much. I can use the exhaust on the 2.0l engine and not restrict the exhaust flow????

I dunno, just an idea!?

This is FORD country, on a quiet day you can hear Vauxhalls rusting.

no, Pipe diameter and material determin back pressure and resonace and pressure wave, so no your power curve will be all over the shop. thats why good after market systems cost so much because they are tuned for the specific engine type.

Length diamiter and bends in a pipe all combine to affect the performance of the engine. So no.

Edited by Mr Joshua on 8th Jan, 2009.

Own the day

is it for Normally asperated or turbo charged? they require two diffrent exhuast setups, eg N/a cars require some back pressue, where as forcred induction tend not to need it as much. as for silencing turbos act as a silencer :)

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

Own the day

If you just want to use the silencer I think it would work OK.

Yeah V!!!

Apparently the k series vvc engine has a right tantrum if you dont have any back pressure

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

i have heard this also, but reading about some civic tuning parts for a friend the spoon sports exhaust system is only sutible for N/a cars not turbo because it holds backpressure for N/a performance or somthing along thoes lines

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

anyone here getting back pressure and gas velocity and momentum (with the bad side-effect of back pressure) mixed up here. you never want back pressure. you do want some momentum in the exhaust gas to help scavenging.. excuse the spelling :)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

And you want a reverse pulse on the intake stroke as the exhaust valve is closing - I think.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

for forced induction the best exhaust is none only a tuned length of pipe.

if you can stand the noise.

check the flow rating of the bike box and if its above your 2litre engines bhp figures ....... it will be fine

this might sound a silly question but how do you calculate a tuned length system?

It will sound sweet anyway haha

If the exhaust came off a 175hp R1, then it will flow adequately for (at least) a 175hp 2.0L car engine. Off course you will have to mate it to a header that suits your engine.

Generally speaking, a free flowing exhaust will give an increase in peak power at the expense of mid-range torque

i second this :)

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

Own the day

wasnt aimed at anyone in particualr mate :) no need to apologise

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.