High oil temp when climbing

[Prior owner]

The only upside was that I also decided to replace a suspect Fuel hose (It looked torqued) from the boost pump to the engine driven pump, and doing so increased my GPH during takeoff by Almost 1 GPH.

[Brian E.]

 

[Brian E.]

22 minutes ago, PilotCoyote said:

The only upside was that I also decided to replace a suspect Fuel hose ...increased my GPH during takeoff by Almost 1 GPH.

Well that should lower your CHTs if that was a concern for you.

[brndiar]

A good thread to the topic:

m

[hammdo]

@PilotCoyote, what was the final result?

-Don

[Prior owner]

8 hours ago, hammdo said:

@PilotCoyote, what was the final result?

-Don

 I’m waiting for the weather to get hotter to get a better feel for how things are now, but it seems that blow-by from glazed chrome cylinders was the primary cause of my elevated oil temps... probably the reason the prior owner parked the plane only 70 hours after overhaul. Oil consumption was nearly at Lycoming’s max allowable per hour.

I replaced all four cylinders, and even during the initial break-in runs the oil temp never climbed above 185 F. I had also been using an oil/air separator as a bandaid to control oil consumption, which I have since removed.

I’ll report here when I’m in the clear, but it’s looking pretty good.

[Prior owner]

4 minutes ago, PilotCoyote said:

 I’m waiting for the weather to get hotter to get a better feel for how things are now, but it seems that blow-by from glazed chrome cylinders was the primary cause of my elevated oil temps... probably the reason the prior owner parked the plane only 70 hours after overhaul. Oil consumption was nearly at Lycoming’s max allowable per hour without an oil/air separator.

I replaced all four cylinders, and even during the initial break-in runs the oil temp never climbed above 185/190 F. I had also been using an oil/air separator as a bandaid to control oil consumption, which I have since removed.

I’ll report here when I’m in the clear, but it’s looking pretty good.

 

Edited April 3, 2021 by PilotCoyote