Thread: B20 QUESTIONS
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Old Oct 21, 2008 | 12:46 PM
  #19  
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BAD4DR
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Default Re: B20 QUESTIONS

I'll give you a bit more to think about.
Keeping everything else the same (rod ratio, exhaust, etc.)

2.0L Displacement 1929.33 cc
Estimated power

85 bore x 85 stroke
175 hp at 7600 RPM peak.
137 lb-ft at 6300 RPM
(170+ hp from 6700 to 8000 RPM)

90 bore x 75.82 stroke
176 hp at 7300 RPM peak
139 lb-ft at 6300
(170+ hp from 6400 - 8500 RPM)

80 bore x 95.96 stroke
169 hp at 7300 RPM
134 lb-ft at 6100 RPM
(Never makes 170 hp on this setup.)

Simply put, the serious under-square, in the same configuration, same displacement, makes less peak torque, and less peak power.

The only major advantages, are that you get far superior emissions with the long stroke engine!