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Old 10-04-2021, 06:20 PM
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rvanstory rvanstory is offline
Join Date: Dec 2016
Location: New Braunfels
Posts: 490
Default CYL #6 CHT Dilemma

I like running LOP and have been playing with injector restrictors to get my GAMI spread as close as possible. My #6 cylinder is always my hottest, regardless of what I've tried. I do NOT want to start cutting for cowl flaps or other mods.

Right now, it seems I have a choice between the "lesser of two evils". With the stock restrictor in #6 (.0280) I have "ok" CHT's in climb with only #6 going above 400 to about 405 in climbout. I'm ok with that. But in cruise, #6 will run around 385-390. A little higher than I want since other CHT's are at or below 360.

When I put a 1/2 size restrictor in the #6 nozzle, my cruise CHT on #6 goes down to around 365 (perfect!). BUT, my climb out CHT gets as high as 421!

So, question is, am I better with cooler #6 in climb? Or better with a cooler #6 in cruise?
Randy Vanstory
Flying RV10 - N783V
2021 Sun N Fun Reserve Grand Champion
2021 Oshkosh Bronze Lindy

1st Flight 08/20/2020 / Current Hrs - 279
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