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Walter,
In the October 29, 2004 issue of General Aviation News. Paul McBride states the my temperatures are completely normal. Paul retired after 40 years with Lycoming. The article talks about an IO-540 but my Operator's Manual has the exact same temperatures that are discussed in this article. Paul's article can be found at:
http://www.generalaviationnews.com/editorial/articledetail.lasso?-token.key=10202&-token.src=column&-nothing
Date: November 8, 2004 9:19:54 PM EST
Posted for Walter Atkinson <walter@advancedpilot.com>:
Lorn:
430dF in the climb? That's higher than I would want. I make sure my CHTs do not get above 380dF, and we shoot for the mid 300s in climb.
Your engine would appreciate it if you could lower the climb CHT of 430. We have seen multiple episodes of thermal runaway at temps above 420dF and it's good to remember that the head has lost 50% of it's strength at 400dF.
I suggest that your FF might be a tad low and/or there are baffle issues with that cylinder.
My engine has a carburetor and can not be adjusted. I climb at full rich with a FF of about 10 gph at 2,600 rpm.
Walter
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?
Lorn
--
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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