<<The Lycoming spec for the O-235 and O-320 shows a maximum pressure drop of 5.5" H2O, 0.35"hg for cooling at all power levels. Typical drop is more in the 2" to 4" level.>>

 

Paul,

What does the spec. show for minimum pressure drop required?  Are these pressure drops correlated to heat transfer or are they just listed as recommended values?  Can you perhaps post a copy of the spec?

Chris

 

Chris Zavatson

N91CZ

360 std