My #1 and 2 EGTs consitently run 80-150 degrees cooler than the other two cyclinders. Here's the data from a recent flight:
I'm running a Lycoming O-360-A1D carburated with a FP composite prop and Bendix mags. This is a factory re-man with about 400 hours on it. 72/74 compression on those two cylinders last time I checked.
As you can see, no temp oscillations and the CHTs are tracking with the other two cylinders (maybe a touch cooler due to air flow). And the engine runs like a champ. No roughness. Hardly no oil consumption, and tons of power. I've recently replaced the #2 probe so it's not that (plus it reads the same as the others when cold).
Is it just the placement of probes or do I have a couple of leaky valves?
-Matt
402BD
![N402BD-fltdata.jpg](/community/proxy.php?image=http%3A%2F%2Fwww.bluecircle.org%2FN402BD-fltdata.jpg&hash=d7fcd4ec5a14aa6c7430b55d489b775a)
I'm running a Lycoming O-360-A1D carburated with a FP composite prop and Bendix mags. This is a factory re-man with about 400 hours on it. 72/74 compression on those two cylinders last time I checked.
As you can see, no temp oscillations and the CHTs are tracking with the other two cylinders (maybe a touch cooler due to air flow). And the engine runs like a champ. No roughness. Hardly no oil consumption, and tons of power. I've recently replaced the #2 probe so it's not that (plus it reads the same as the others when cold).
Is it just the placement of probes or do I have a couple of leaky valves?
-Matt
402BD