[Fot] Header primary lengths

[Terry Stetler]

  An interesting aside to this discussion is the development of the last
piston engined fighter aircraft at the end of WW2.  All of them, no matter
what nation, had short, separate, exhaust stacks for each cylinder. Why? It
was found that measurable ammounts of thrust could be obtained using this
configuration, thus giving higher top speeds.  And all these engines operated
at speeds typically below 3000rpm.  Perhaps top fuel dragsters are seeing some
tractive gains by using their "zoomie" headers?

  Terry Stetler