Backround:
O-360A1A, 1,000 Hrs since new, RV-7, 1,000 Hrs
Never had high CHTs until about 50 hours ago when #2 and #4 became higher on climb out. Now, at 120 kts cht on those two cylinders climbs to 420 fast and would go higher if I didn't back off power.
Ignition: EFII on bottom plugs, slick mag on top
So far I've changed intake couplings and gaskets, checked the carb for looseness, changed mag and harness. Nothing has had any real effect. Baffle seals aren't perfect but are pretty good and I can't see much change from several years ago. Checked #2 cht probe in hot oil and it tracks with a digital cooking thermometer.
Something has changed but I don't know what. I've read through high CHT posts here on the forums but haven't seen any describing symptoms like this.
Ideas?
Thanks,
LeMar
O-360A1A, 1,000 Hrs since new, RV-7, 1,000 Hrs
Never had high CHTs until about 50 hours ago when #2 and #4 became higher on climb out. Now, at 120 kts cht on those two cylinders climbs to 420 fast and would go higher if I didn't back off power.
Ignition: EFII on bottom plugs, slick mag on top
So far I've changed intake couplings and gaskets, checked the carb for looseness, changed mag and harness. Nothing has had any real effect. Baffle seals aren't perfect but are pretty good and I can't see much change from several years ago. Checked #2 cht probe in hot oil and it tracks with a digital cooking thermometer.
Something has changed but I don't know what. I've read through high CHT posts here on the forums but haven't seen any describing symptoms like this.
Ideas?
Thanks,
LeMar