Summary required explaning passage of air from......

[WR1 Bro]

.... the air filter to the exhaust.

[marky mark]

.... the air filter to the exhaust.

Is this a genuine request? As in are you interested really? Or are you just giving me an oppurtunity to sound off?

[Gazman2054]

.... the air filter to the exhaust.

Is this a genuine request? As in are you interested really? Or are you just giving me an oppurtunity to sound off?

Go on Marky as this could be interesting as i dont know either

[WR1 Bro]

.... the air filter to the exhaust.

Is this a genuine request? As in are you interested really? Or are you just giving me an oppurtunity to sound off?

Yes mate, I do want to know. I'm trying to get straight in my head how everything works... I get confused with the parts like up pipe, down pipe, red thing on top of engine etc!

[marky mark]

ok i see.

1) Through the air box / filter
2) Through the intake pipe,Past the MAF sensor, through the inlet pipe.
3) Into the compressor side of the turbo (at this point it's compressed and becomes a 'charge'
4) Through the intercooler (some may be vented off through Dump valve)
5) Through the throttle body (which has the butterfly in connected to your right foot!)
6)Into the inlet manifold
7) Into the inlet port of the cylinder head. At this point it's mixed with the fuel from the injectors at around 13:1 ratio
Past the inlet valve Into the combustion chamber, where its ignited and turned into exhaust fumes so not really air anymore.
9) Puished out past the exhaust valve by the ascending piston.
10) into the exhaust manifold (headers)
11) into the up-pipe
12) into the exhaust hot side of the turbo. At this point some may get directed through the wastegate.
13) into the downpipe and past the lambda sensor
14) through the centre section, backbox and out the back.

There are other places it goes to like the brake servo etc but as regards the engne itself thats it.

[Gazman2054]

ok i see.

1) Through the air box / filter
2) Pass the MAF sensor
3) Into the compressor side of the turbo (at this point it's compressed and becomes a 'charge'
4) Through the intercooler (some may be vented off through Dump valve)
5) Through the throttle body (which has the butterfly in connected to your right foot!)
6)Into the inlet manifold
7) Into the inlet port of the cylinder head. At this point it's mixed with the fuel from the injectors at around 13:1 ratio
Past the inlet valve Into the combustion chamber, where its ignited and turned into exhaust fumes so not really air anymore.
9) Puished out past the exhaust valve by the ascending piston.
10) into the exhaust manifold (headers)
11) into the up-pipe
12) into the exhaust hot side of the turbo. At this point some may get directed through the wastegate.
13) into the downpipe and past the lambda sensor
14) through the centre section, backbox and out the back.

There are other places it goes to like the brake servo etc but as regards the engne itself thats it.

Nice one Marky

[WR1 Bro]

ok i see.

1) Through the air box / filter
2) Pass the MAF sensor
3) Into the compressor side of the turbo (at this point it's compressed and becomes a 'charge'
4) Through the intercooler (some may be vented off through Dump valve)
5) Through the throttle body (which has the butterfly in connected to your right foot!)
6)Into the inlet manifold
7) Into the inlet port of the cylinder head. At this point it's mixed with the fuel from the injectors at around 13:1 ratio
Past the inlet valve Into the combustion chamber, where its ignited and turned into exhaust fumes so not really air anymore.
9) Puished out past the exhaust valve by the ascending piston.
10) into the exhaust manifold (headers)
11) into the up-pipe
12) into the exhaust hot side of the turbo. At this point some may get directed through the wastegate.
13) into the downpipe and past the lambda sensor
14) through the centre section, backbox and out the back.

There are other places it goes to like the brake servo etc but as regards the engne itself thats it.

Thanks matey... I will read this a few times and try to fix it in my head.

I have a slight confusion around the compressor side of the turbo and the exhaust hot side of the turbo.

[marky mark]

Think of your turbo as 2 separate housings attached to each other. Through the adjoining wall is a shaft supported by a bearing. On each end of the shaft is a fan that sits within its respective housing.

The exhaust side ( hot side / turbine housing) is one of the housings

The inlet side ( compressor side / cold side) is the other.


Then turbine blade (fan) is driven by the exhaust gas coming into the housing from the cyl head / headers / up pipe. The exhaust gas drives the turbine then exits via the wastegate / downpipe.

On the other end of the shaft to the turbine is the compressor wheel (fan). As it is connected to the shaft being rotated by the turbine it is rotating in its housing as well. Air incoming from the air filter is then compressed (boost) by the wheel before it exits into the intercooler / engine.

[marky mark]

FYI Bro i have made a small edit to no.2 on my original list.