| Art, I've been tracking baffling baffling issues for some time in my Legacy. I run much hotter CHTs (closer to 380 in cruise) but my oil temp is down to 158F with the door wide open in warm weather (during cruise, not takeoff or ground). My hangar mate Legacy runs in the 310-320 range on the same flights so I know I have a leak. I tested one flight a few weeks ago with 1 piece of tape to hold the baffle tight up front and my temps dropped to 320F immediately after takeoff in warm Florida. The tape blew off before the end of the flight but it told me where to look. As far as too cool CHTs, I don't think that's a problem. If you ran 300F all day long I can't see how that would hurt anything and that's in the Green range, right?
Here is a picture of where my tape went to seal the baffle against the cowl. I assume it was flapping in flight or opening up in this region. 4 inches tape = 80 degree drop in CHTs across the board.
On 2011-08-25, at 8:48 AM, Art Jensen wrote: ...how cool you can run the IO-550 engine |
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