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The turbo engine from a VX220/Speedster doe not fit in the Elise chassis as the VX/Speedster has a completely different engine subframe and rear frame.

The turbo engine they use is an 'amost 2000cc' Family-II (cast iron block) engine from GM. It's badged 'Ecotec', but is actually a much older engine design that comes from one of the other Opel/Vauxhall models here.

This is not the turbocharged version of the normally aspirated full aluminium L850 2.2L Ecotec in the normal VX220/Speedster as used by SAAB for their 2.0 turbo engines. (SAAB has some exclusive deal inside GM which prohibits all other GM parts from using these engines for several years)

On the turbo GM fits a small normal intercooler near one of the side-vents, but serious VX turbo owners that track their car usually fit a chargecooler with a front-mounted extra radiator for the water circuit as the standard intercooler can't really cope with the heat back there as it does not get enough airflow (power drops with prolonged use)

Personally I don't like the 'rubber band' feeling the tubo gives to the throttle control and response. I'd rather stay with normally aspirated engines anyway.. VVTi and VTEC may also have a 'kick' once the cams switch, but at least it's always predictable and at the same rpm's.

Bye, Arno.
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