Remember they come up with this number running at 75% continuously, this will increase with lots of takeoffs and long climbs at full power. Dave
At 12:27 PM 8/26/98 -0700, you wrote: >Steve: > >According to the Continental C-75, C-85, C-90, O-200 Overhaul Manual, the >average oil consumption for the C-90 is listed at 1/3 pint per hour or 1 qt >every 6 hours. Let us know how all this turns out for you. > >Regards > >Charles McKinnie >F-1A, N3050G, GEU >-----Original Message----- >From: Steve Dold <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>; [EMAIL PROTECTED] ><[EMAIL PROTECTED]> >Date: Tuesday, August 25, 1998 8:41 AM >Subject: Re: High oil temperatures in C-90s > > >>At 07:23 PM 8/24/98 EDT, you wrote: >>>Generally, high oil temperature is due to "blow by" , hot gases passing by >>the >>>rings into the crankcase - heating up the oil... This can and does occur >>quite >>>often when an airplane is flown infrequenytly, and the rings become stuck >in >>>the piston grooves. >> >>This might be a factor. The engine does use oil at a rate of about a quart >>every two hours, and at least some of it is blowing out of the breather. >>The compression check shows mid-70s in each cylinder though, so I'm >>surprised at the oil use. >> >>One thing is, the engine has 750 since new, and new was 1970, so it hasn't >>been flown regularly. God knows what has happened to the cylinder walls, >>not to mention the cams and gears and such. >> >>Also, the oil gets black quickly, making me think it probably is blow-by. >>I'll try the MMO, then pull the cylinders and have look if things don't >>improve. As long as the owner doesn't mind :-) >> >> >> >>----------------------------------- >>Steve Dold ([EMAIL PROTECTED]) >>Say NO to useless over-quoting >>----------------------------------- > > >
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