Originally posted by machinehead
guess that settles it 
The h23 is just as reliable as long as you dont rev it higher then it was originally intended. The only weakness i see is if you have the faulty bearings still in it, but that would break regardless of the head swap.
try fault crank
honda has never admitted it, but from what ive seen with magnafluxing h23a1 cranks, it def has balancing flaws compared to the h22a crank
and of course the h23a1's stroke is longer than the h22a, whilst the h22a/1 is much closer to the optimal bore/stroke ratio.
(we already had a thread recently about this ratio)
drift, i am going by my HONDA SERVICE MANUAL again...HONDA designs and builds these motors, and i think it is a little arrogant to claim that you know more than those poor little suicidal engineers who go home and kill themselves if they miss-label 1 blueprint out of 1,000,000.
IMO
part for part...boosted or NA...the h22a WILL outperform the H23a
~boom