OH, around 40K
:=D
Seriously, turbos of around 50 to 55 pound per minute, good cooling, and an
EFI system, and some good attention to combustion sealing. Just good
practice stuff. Camshaft needs to be really mild events with lots of lift.
My turbo cams were around 20 degrees of overlap and .600 lift. The next
generation will be at least .7 lift with not quite so mild events.
My latest thoughts that I am saving for when the lakester/liner gets the
blown motor is to use all the technology we do on N/A, then breathe on it.
Tuned intake, scavenge exhaust etc etc. For piston rings though I'm still
conservative and will stick with Moly faced ductile iron top and second with
low tension oil. I'm using 0 gap stuff on the N/A, but need to consider the
high temps of the turbo, especially if on gasoline. I suppose that when I
switch to methanol I might rethink this.
As my notes earlier said, Inconnel exhaust valves, and turbine wheels so
things will live with lots of EGT.
I will be interested in seeing the rest of the answers.
Rick
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