Help with sr20det extractors

[SoOkY]

$350, sounds like a bargain.

[TODA AU]

Granted that is cheap...

If they're in good condition with no cracks or sign of being repaired... Should be no problem.

Bear in mind, with the standard turbo fitted, you may actually lose power if the length is substantial. Assuming also standard cams are used.

[Sumo]

Extractors? Hrmm, didn't know you could get them for turbos... I just thought there were Exhaust manifold - Turbo - then dump pipe?

Sumo

[SoOkY]

How can you lose power with stadard turbo?

[TODA AU]

Ok… Back to basics… Turbines spin because of impulse.

In layman’s terns that means the inertia of the gas is imparted to the turbine wheel when it is caused to change direction.

When this gas loses some of its energy… I.e.: HEAT

It no longer has the energy it had previously with a shorter exhaust runner length.

This phenomenon is more dramatic the shorter the cam profile.

[MrMayhem]

well said

[SoOkY]

oh ok thanks, but i still thought there will be less turbulance from after market extractors, wouldn't this make up for the loss in heat?

[TODA AU]

SoOkY,

Yes and no... Honestly, I think you’re worrying a little too much...

I did say if the length was substantial... (That would be say more 25-inch long primaries... at a guess)

For what it’s worth, I've also seen an OEM SR20DET turbocharger, maxed out using an equal length 4 into 1 turbo headers... Ones that I made actually… Lol

A damn good turner I know managed to squeeze 220kw out of it to the rear tires...