Warm up p-51 engine?

[fhog0424]

How does one go about warming up the engine on the p-51? Tried closing the radiators with no luck. Coolant temps still stay around 40 degrees.

[Cpt_Siddy]

Put mixture on lean, keep rpm low and give it some throttle gently until it warms up. 

[FeuerFliegen]

Shouldn't you keep RPM at 100% to warm up quicker?  I understand you don't want to rev it too high to damage engine, but It won't actually rev higher than a safe amount unless you throttle enough to push it there.  I'd leave it at 100% RPM and raise throttle to 10-15%.

[ZachariasX]

3 hours ago, FeuerFliegen said:

Shouldn't you keep RPM at 100% to warm up quicker?

1200 rpm.

 

Don‘t rev cold engines too high. Below 1200 IRL lead will foul the sparks as well. But you are right in the sense that it is generally a bad idea warming up an engine at idle. As the engine will not readily warm up, you‘re just running it cold over extended time.

On 12/7/2019 at 11:04 PM, Cpt_Siddy said:

Put mixture on lean, keep rpm low and give it some throttle gently until it warms up. 

In game cruelty. But it should definitely work.

[Cpt_Siddy]

1 hour ago, ZachariasX said:

 

In game cruelty. But it should definitely work.

 

Oh trust me, i would never do to real aero engine what i do to engine in game....

[Bremspropeller]

On 12/9/2019 at 3:15 AM, FeuerFliegen said:

Shouldn't you keep RPM at 100% to warm up quicker?  I understand you don't want to rev it too high to damage engine, but It won't actually rev higher than a safe amount unless you throttle enough to push it there.  I'd leave it at 100% RPM and raise throttle to 10-15%.

 

If by RPM you mean the prop-lever, then it doesn't really mean a lot where you'll keep your lever, as the props are on the fine pitch stops anyway.

The blades will only start to move at higher throttle-settings, where selecting a lower governed RPM will actually take the props off the fine pitch stops.

 

Normally, you'd cycle the prop-lever a couple of times during runup:

It shows you the governor actually works and it also feeds warm oil to the system.