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Cars & Coffee Killer
Join Date: Sep 2004
Location: State of Failure
Posts: 32,246
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Desmodromic Valves
Why are they not used in all high performance engines?
I just heard of them the other day, and they seem like the holy grail of cylinder head technology to me: they prevent valve float.
Because they are not used by many companies (MB used them in the 50's and Ducati uses them now), I'm guessing there is some glaring deficiency in the design that prevents their widespread use.
Edumucate me.
__________________
Some Porsches long ago...then a wankle...
5 liters of VVT fury now
-Chris
"There is freedom in risk, just as there is oppression in security."
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