Emmet Posted December 10, 2017 Report Posted December 10, 2017 Does anybody know if there is a way to install a 252 aircleaner in a 231. That would of course require the installation of the air intake in the cowling and a modified baffling, but it might improve the cooling of the right hand side cylinders. Quote
kortopates Posted December 10, 2017 Report Posted December 10, 2017 The way to do it would be via the 262 STC which is appatently orphaned. But besides converting the engine you’d be replacing at least the lower cowling too. Sent from my iPhone using Tapatalk Quote
milotron Posted December 11, 2017 Report Posted December 11, 2017 Do you have a cooling issue on the right side? The trophy mod also adds the large, infinitely adjustable single cowl flap opening for cooling which would help a lot too I would think. iain Quote
One Whiskey Hotel Posted December 12, 2017 Report Posted December 12, 2017 I also run warmer on 5-3-1 cylinders, and suspect it's due to the induction air intake which blocks some airflow relative to the open inlet in front of 6-4-2 on the pilots side. Presently working with GAMI to narrow the spread, as the egt on #1 is warmer too by about 80 degrees. How hot does your #1 and right side run? Cowl flaps closed or trail? Time since top or major? Are your egt's in line? Quote
Emmet Posted December 12, 2017 Author Report Posted December 12, 2017 On 11.12.2017 at 2:23 AM, milotron said: Do you have a cooling issue on the right side? The trophy mod also adds the large, infinitely adjustable single cowl flap opening for cooling which would help a lot too I would think. iain No, not really. Just from comparing the available area of both inlets I thought it might be beneficial as nearly half of the right side is covered. A look in the parts catalog made me think about it as it doesnˋt look very complicated - and it is just a evolution of the samy type certificate ... Quote
milotron Posted December 13, 2017 Report Posted December 13, 2017 Airflow is probably not as bad as it looks. The change was for intake icing, or so I have read. The 252 needs air for the intercooler also. The cooling flow is largely driven by differential air pressure across the upper and lower cowls and less so by available surface area of the opening. Look at the openings on the new Mooneys or Cirrusesses; small and circular but likely very carefully designed convergent nozzle/flow arrangements inside and out. Not a fluid dynamicist... iain 1 Quote
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