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Posted

I recently purchased a 1967 M20C with a Lycoming 180hp carbureted engine. No one in my area has any Mooney experience so I have no one to ask about handling and flying characteristics. One question I would like an answer for is what manifold pressure and RPM settings do you guys use for climb out and cruise? Normally my flying is done between 3,000 and 6,000 MSL.

Posted

Parker's description is exactly how I fly my 1965C. I cruise at WOT and 2500RPM from 4000-9000, and occasionally go to 2600RPM at 10,000 or above.

Posted

Quote: fly4fun

I recently purchased a 1967 M20C with a Lycoming 180hp carbureted engine. No one in my area has any Mooney experience so I have no one to ask about handling and flying characteristics. One question I would like an answer for is what manifold pressure and RPM settings do you guys use for climb out and cruise? Normally my flying is done between 3,000 and 6,000 MSL.

Posted

Quote: Parker_Woodruff

The 26"/2600 RPM recommendation means you can climb about 3-4 minutes and then can't even make 26" MP at that point.

1) It doesn't hurt the engine to keep the throttlewide open.  Cooling is often BETTER while Wide Open 2)No sense in even pulling the throttle back for such a short time.  The engine is rated for 180 hp continuously.  Might as well use it.

  • Like 1
Posted

No, but still no reason to pull the throttle back.  On a normal flight, I'm WOT from the takeoff roll until about 2000' above pattern altitude on my descent.

Posted

Quote: JimR

Negative. Its just on the carb'd models.  It is still good technique for those of us with fuel injection to climb at WOT, though, because that is where the induction system is most efficient. 

Jim

Posted

Quote: KSMooniac

Negative. Its just on the carb'd models.  It is still good technique for those of us with fuel injection to climb at WOT, though, because that is where the induction system is most efficient. 

Jim

Posted

yeah I should revise that. I can count on one hand on the last year and a half I have done it, but backing off on the throttle can result in some serious savings if just out looking at horse property.  At 15", 2200 RPM, and peak EGT, I can get 4.6 GPH. 

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