Is this typical? re: cht's at cruise

[haymak3r]

40 minutes ago, Bolter said:

I also flew over Oregon this past weekend, and it was much warmer than standard day at altitude, and I was also seeing warmer CHT's on my Ovation.  Enough to prompt adjusting mixture and RPM until it got happy again.  In these warm cruise conditions with my J, I would have cowl flaps in "trail" position.  I never made a summer-winter adjustment of the cowl flap gaps.  Climb was fully open cowl flaps, from engine start.

On the standard J, the #3 cyl has the factory gauge, and threaded into the CHT.  Typical analyzers are therefore a spark plug ring for the #3 cyl only, threaded sensor for the othes, but that spark plug ring reads hotter than the threaded location would.  If your analyzer is a primary installation, then they probably put the sensor threaded into the cylinder, and you have the best apples to apples comparison of temps between each cylinder.  

Yep. has been pretty warm here. Mine is a gi-275 and is all primary, and I installed the CHT sensor probes  With my A&P/IA right there. EGT's are all at the same spot as the stock location was at too. So there isn't really any variation in those temps too due to install location.

[jaylw314]

2 hours ago, haymak3r said:

I have also thought about really looking at the baffling and maybe getting new. 

Just going through and plugging all the holes and sealing some of the gaps would probably be low-hanging fruit to try first, if you haven't already done that.  I remember there was a wiring hole in my baffling that did not have a grommet in it.

[haymak3r]

Definitely on the list to investigate once I get my hanger back.... Eugene is doing a bunch of construction and the north hangers are inaccessible right now. So lame...