Turbo header design

[Ludis Langens]

bearbvd at sni.net (Greg Hermann) wrote:
> A flat crank V-8 is like two fours.  Too
> late at night to try to describe the shaking which results.

I once worked through this mental exercise.  The four cylinder hop gets
turned into rotation back and fourth about the crank*.  The frequency is
the same as the power pulses.  In other words, the imbalance turns into
drive line pulses.  This info is from memory, and my original analysis
might have been wrong.  Its too late to double check my thinking.

* It might end up being about the center of mass, which would then mean
a more complex motion.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/