On Thu, 3 Jul 1997, Jurgen Hartwig wrote:
> am i missing something here. 93 horsepower from 1622 cubic centimeters.
> ouch, that is quite nice.
> if this is the case, why don't the 1798 cc 18?? engines have more horses.
Because the head restricts the breathing ability of the engine. It
doesn't really show up until you get to the larger sizes; 1800 or the
big bore sizes (1900, 1950, etc.)
The 1800's head was a development of a 1930's design, and WILL NOT FLOW
anywheres near the capacity of a 4 port, cross-flow, overhead cam head.
The only way to compensate for the antiquated design is to either blow
it (turbo, or supercharger), or use a nitrous oxide system.
TTUL8r, Kirk Cowen (who can't speak to flame propagation, squish area,
dual plug advantages, valve shrouding, etc.)