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Arragonis · 06-11-2011, 01:38 PM

GM Europe sell (or did sell until recently) "Twin Port" versions of the smaller 1.2-1.6 engines. There is a narrower and longer inlet tract used at lower speeds and then a short and wider one which opens at higher speeds. It was first sold on a large car in the late 1980s when it gained a 4valve per cylinder head and the engineers wanted to keep low end torque healthy.

I have to admit to being cynical about this idea but I had a loaner 1.2 Corsa Twinport for a couple of days and it was a reasonably nice drive for a petrol (I drive a TDI so have mega low torque).

As for this device, is it one for the Unicorn Corral ?

06-11-2011, 01:38 PM	#4 (permalink)
Arragonis The PRC. Join Date: Oct 2009 Location: Elsewhere. Posts: 5,304 Thanks: 285 Thanked 536 Times in 384 Posts	GM Europe sell (or did sell until recently) "Twin Port" versions of the smaller 1.2-1.6 engines. There is a narrower and longer inlet tract used at lower speeds and then a short and wider one which opens at higher speeds. It was first sold on a large car in the late 1980s when it gained a 4valve per cylinder head and the engineers wanted to keep low end torque healthy. I have to admit to being cynical about this idea but I had a loaner 1.2 Corsa Twinport for a couple of days and it was a reasonably nice drive for a petrol (I drive a TDI so have mega low torque). As for this device, is it one for the Unicorn Corral ? __________________ [I]So long and thanks for all the fish.[/I]