FireMedic_2009
Well Known Member
I have an RV3 and for a long time my CHT’s on cyl #3&4 have been problematic in the climb reaching 415-420 range. Once in cruise all the cylinders level out within 5-7 deg of each other around 380. I’ve leveled out to get the temps down and then climb again. Even at an airspeed in the 140 kt range climbing at 700-1000 fpm will increase cyl 3&4 into the 410 plus range. I even have pulled back the power 2450-2500 rpm to 2250-2300 range. The baffling looks to be pretty tight when I checked close to 2 yrs ago using a light behind the rear baffle an a borescope through the front inlets on cyl 1&2. I can understand if the airspeed on takeoff is around 100kts, but after leveling off cruising at 155-160 kts and climbing at 140kts to see cyl 3&4 increase to 410 doesn’t seem right. Currently I have the air to my oil cooler shut down just to get oil temp above 170 deg so no air being robbed from there. My concern is cylinders 3&4 are going to need to be overhauled before 1000 hrs. I currently have 325 hrs of tach time
Does anyone have suggestions?
Thanks
Daren
Does anyone have suggestions?
Thanks
Daren
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