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"two way" turbo?


roboldham

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Originally posted by roboldham

Answer me this peeps -

 

On my Cam cover is says "3000 VVTI two way Twin Turbo" (or something similar)

 

What is or are "two way"?

 

R

 

it's refering to the sequential operation of the turbos, before 4000rpm only 1 turbo is producing boost, after 4000rpm both are producing boost.

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Originally posted by HardHead42

it's refering to the sequential operation of the turbos, before 4000rpm only 1 turbo is producing boost, after 4000rpm both are producing boost.

 

Hmm okay- I thought that was it - but two way didnt seem to make sense - perhaps to a Japanese person :-)

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Originally posted by Neil Sandham

something to do with the air intake via the intercooler I seem to remembr, not sure of the exact detail though.

 

 

The exhaust housing scroll of the turbine side of the turbo is bifurcated, and 2 cylinders feed one leg, two the other, maximising the cylinder pulsing effect of a 4 cylinder engine. Reduces lag, and may help emissions too. A lot of modern turbos are available with bifurcated housings.

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