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From: "belle and Fred Baron" <twobarons@saber.net>
Subject: LNC2 Cooling
I really do appreciate all the posts in the last month or so on cooling and insight gained from Ada.
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Cyl.# 1- Always has been very cool (170 C) ,so it is a non issue.
Cyl# 2-The hottest (200 to 210 C) in cruise. I actually had to replace it at 850 hours due to it being "out of round".From the List I learned that you have to drive the air down thru the FRONT on # 2, at the flat spot, where there are very small to no cooling fins. This was very easy to do by cutting 3/4" off of the 45 degrees ramp that is actually touching the cylinder. This opened up a gap about 1/4" directly in the front center of #
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Fred,
My CHTs are running at between 320°F and 390°F in cruise(depending on the power setting and OAT) and up to 430°F in climb. I have 1,000 hours on the engine and it still looks perfect from a compression and oil consumption point of view. What are we doing so differently?
Oh... I just saw your centigrade indication.
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-345-0500, mailto:lorn@dynacomm.ws
LNC2, O-320-D1F, N31161, Y47, SE Michigan
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