Sw20 S3-Ge Engine Changes

[Prof Quatermass]

Hi,

I'm confused about the S3-GE engines and the various changes to it.

On the fourth generation Celica the S3-GE had Toyota's original variable induction system (TVIS) similar to that used on the 4A-GE MR2.

By 1990 this set up had been ditched for a system using a plenum chamber - but is this the version of the first generation SW20?

I think the first two revisions of the SW20 kept the 158bhp engine - then there was a power hike to 173bhp. What changed to allow this and did these engines continue until the Rev 5 cars? I know some Rev 5 cars had BEAMs engines but, sadly, only Japan and New Zealand (anyone know why NZ got the goodness and nowhere else)?

Thanks for your help,

Prof.

[Devon Aygo]

Quite a bit of info here : http://en.wikipedia.org/wiki/Toyota_S_engine#3S-GE

[Prof Quatermass]

Thanks, so did the first SW20 come with the Acoustic Control Induction System and not TVIS? Wikipedia would seem to suggest so.

[blz-8027]

And some info here (possibly the same )

http://cyprusjmdsportcars.aforumfree.com/t6-toyota-3s-ge-engine-history-specifications

[Prof Quatermass]

Yep I think that's the same - but thanks for the info all the same.