|
I can only wonder what a tuned intake will do whith altered cam timing and a fair blast of the charge out of the cylinder.
Tuned intake is build on valve closure event wich will be delayed.
I have two cam phasing options :
A :
phase the opening as is done on the shorter cam / lower power derivative (keep a fair chunk of overlap as seen in 100hp / liter engines)
or
B :
phase it even later as seen on the Prius Otto phasing wich should place the opening just a few 10° before Prius Atkinson closing.
A advantage is it would need only 0,75 mm off the head to restore dynamic compression ratio.
B is much more involved since it requires more skimming (closing event delayed even more) but is more hardcore Atkinson (and less overlap wich I believe would help lower RPM grunt)
A is more reversible if need would arise.
Mechman600, would you advise on a lower Dynamic CR ?
Not skimming anything would be good.
I could also fit the big inlet cam to the lower power and lower CR derivative wich could set me down to Prius Atkinson CR more or less ...
|