I agree, mine also runs rough between 1800-2100. -----Original Message----- From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> To: [email protected] <[email protected]> Date: Saturday, April 01, 2000 10:40 AM Subject: Re: [COUPERS] C-90 Vibration, Help please
Sounds like the standard C-90 vibration between 1800 and 2100 RPM. I have the same as you, OH engine with Millenniums and around 100 hours, two different props that have been into the prop shop. One thing to check for is induction leaks, causing one cylinder to run a drastically different mixture from the others. My operation seems to always be at full throttle 2200 for climb, 2450 for cruise, 1500 for descent. I avoid the bad range. According to my mechanic, all the 4 banger Continentals run roughly in this RPM region. David N6359V [EMAIL PROTECTED] wrote: > > Coupers; I have vibration problems with a C-90-16F. The engine has about > 2400 hr. TT with less than 40 hr. since MOH with new Millennium cylinders. > New engine mount bushings were installed at overhaul. The engine runs great, > with no noticeable vibration except between 1800 and 2200 RPM. __________________________________________________________________________ __ ____ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] _________________________________________________________ Enlighten your in-box. http://www.topica.com/t/15 __________________________________________________________________________ ______ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] _________________________________________________________ Enlighten your in-box. http://www.topica.com/t/15
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