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a12 head on an l20b?


Lozer

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I think BMW has a cam less motor and no throttle plate either. Valve lift and duration are set by solenoid. At idle there is hardly any lift and only like a teaspoon of air gets in so no need for a throttle. Imagine variable lift and duration... holy shit!!!

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Last I heard BMW's camless engine was still pretty much a research engine, it was supposed to go into production in 2003 (quoted in 1999) and 2007 (quoted in 2005) but I don't think it made it to production yet. Fiat was hoping to launch a camless engine for the 2009 model year, but it probably is delayed too.

 

Camless/throttleless systems actually use the valves as the throttle.

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