re: milling head, no other alterations -- interesting question.
I puzzled over that also, and not having access to a dyno, used two
different and independent formulae for hp, leaving all other parameters
constant and changing only the compression ratio. The answer I got from
both equations was that one point of compression ratio increase (like
from 8:1 to 9:1) yields three percent horsepower increase. That would
mean that on a 100 hp engine you would get only 3 more hp. The answer is
quite different if you change valve timing at the same time.
I'd sure like to see dyno confirmation of this.
--
uncle jack
61 TR4 Rallye Replica Racer
71 TR6 Street Car named Desire
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