JackinMichigan
Well Known Member
I've got just under 10 hours in my RV-10 as of yesterday, and since the first flight I've been fighting a battle with high CHTs. After much work this weekend sealing every leak and removing every flow obstacle, these are my CHT numbers; better than before but still widely varying. This is at level cruise, 24" MP and 2400 RPM, full rich mixture with break-in mineral oil, speed approx. 170 MPH, outside temp mid-30s F:
Cyl 1 - 335
Cyl 2 - 335
Cyl 3 - 315
Cyl 4 - 320
Cyl 5 - 364
Cyl 6 - 347
The numbers are all under my 380 limit, but #5 is way hotter. In fact my coolest and hottest cylinders are right next to each other. I want to think there's something that can be done about that.
Should I just stop fretting and call these numbers good? That #5 cylinder does creep up to 410 or so during climbout, so I'm not sure if I need to get more creative with my baffle layouts or just accept these numbers as normal. I'm curious what these numbers will look like on a 90 degree summer day.
Cyl 1 - 335
Cyl 2 - 335
Cyl 3 - 315
Cyl 4 - 320
Cyl 5 - 364
Cyl 6 - 347
The numbers are all under my 380 limit, but #5 is way hotter. In fact my coolest and hottest cylinders are right next to each other. I want to think there's something that can be done about that.
Should I just stop fretting and call these numbers good? That #5 cylinder does creep up to 410 or so during climbout, so I'm not sure if I need to get more creative with my baffle layouts or just accept these numbers as normal. I'm curious what these numbers will look like on a 90 degree summer day.