2 New Engines & High Temps

[Mich3773]

Could you post the raw data from the engine monitor, including fuel flow and oil temperature?

[hharney]

Tom

For only 15 hours on the engines I don't think you are looking that bad. 460 F is max and you look to be around 375 F average. For break in this should be acceptable.

For break in purposes all climbs should be shallow to minimize the temps and descents slow with high power settings as much as possible.

Have you changed the oil yet? How much oil are you using? How are the oil temps?

What does Savvy say?

[tomcomet]

Originally Posted by hharney

Tom
Have you changed the oil yet? How much oil are you using? How are the oil temps?

What does Savvy say?

We are going to change the oil at 20hours. Using around 1QT per 10 hours now. I don't subscribe to the paid Savvy service. Perhaps I should...

[tomcomet]

Originally Posted by Mich3773

Could you post the raw data from the engine monitor, including fuel flow and oil temperature?

I will get this...

[kilr4d]

Originally Posted by Mich3773

Could you post the raw data from the engine monitor, including fuel flow and oil temperature?

Those are in his link from Savvy Analysis, use the drop down menus to view different parameters.

[kilr4d]

Digging into this a little more, I think we should note that you're running these engines fairly hard:

Cruising at 25" - 26" manifold pressure, 2450 rpm, 3500' msl, etc. That would put you over 80% power I believe.

Through all this I see that you're running 110 degrees oil temp on the front engine and 128 degrees on the rear engines which is good news. The low oil temps mean that your rings have sealed and the hot combustion gasses aren't getting by them and heating up the oil. Also, I'll bet that fixing the rear baffling helped those rear oil temps get close to the front on your last flight.

How's your oil consumption?

[tomcomet]

Originally Posted by kilr4d

How's your oil consumption?

Very low. 1qt per 10 hrs aprox...