High speed engine limitations

[algherghezghez]

There is one thing I don’t get from the engine damage modeling. I can stay at full throttle during dogfights for quite a while, keeping an eye on oil and water temps, but if I stay at full throttle at high speed for more than 1/2 minutes the engine breaks down. At around 320 mph, full throttle and max rpm, sea level, everything looks normal for around one minute, temperatures are perfect (oil around 80 degrees) until there always is a small thump and the oil temperature quickly rises (even with the throttle at idle at this point) and after reaching 105 degrees the engine cooks and grips. Any idea why this is happening?

[grafspee]

Provide track with failure. This is the best way to find out what is happening.

[Cool-Hand]

Sounds kinda like 'engine degraded' failure. If you have track that would help narrow down what the cause is/was.

[grafspee]

It could be many things, overcooling, not proper warming up , over stressing power settings for engine could be a bug too as well hard to say without track.

[algherghezghez]

Ok I did some tests and found what was happening:

Cruising at high speed in winter leads the coolant temperature to drop to 60°, and the oil pressure to rise above limits (and tht's what eventually kills the engine) even though the oil temperature stays at 80° (which is weird because the increase in oil pressure should be the outcome of the low oil temperature and not related to the coolant temperature I guess)

[Art-J]

I'm off my gaming rig for days so won't be able to replicate, but If that's really the case (oil press depending more on coolant temp than oil temp) then re-posting it in bugs&problems section should follow. Replay tracks are a must, though, without them the thread will be ignored.

[algherghezghez]

1 minute ago, Art-J said:

I'm off my gaming rig for days so won't be able to replicate, but If that's really the case (oil press depending more on coolant temp than oil temp) then re-posting it in bugs&problems section should follow. Replay tracks are a must, though, without them the thread will be ignored.

I will repost on bugs and problems with a track, I just wanted first to make sure that it wasn’t some obvious mistake from my part or I wasn’t understanding something in the systems. 

[Art-J]

Understood. This new cooling model for all warbirds, albeit implemented quite a while ago, seems to have its own quirks and issues, but since most of the DCS players usually fly them at lower alts in warmer conditions, strange problems just get noticed and reported only now.