Quote:
Originally Posted by Roman@ESS
It is actually a custom hybrid lifter that is designed for high RPM's.
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That makes sense, a conventional hydraulic lifter wouldn't be the safest design in an engine that turns 8400RPM. Thanks for the clarification on that.
Actually the hybrid design explains the reason that the valvetrain is noisier on the S65 that most other engines with hydraulic valvetrains. The design sounds like it is really the best of both worlds, no adjustments but with the safety of a solid design!
I am now very interested in exactly how it is designed internally!