---------------------------------------------------------- Zenith701801-List Digest Archive --- Total Messages Posted Sat 12/15/12: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:44 PM - 912 over heating (frank goodnight) 2. 09:06 PM - Re: 912 over heating (John Marzulli) ________________________________ Message 1 _____________________________________ Time: 04:44:35 PM PST US From: frank goodnight Subject: Zenith701801-List: 912 over heating Hello 701 builders and flyers' Just finished my 701 , about a hour and a half flight time. Have a problem with overheating --912 ULS-- that came off a Titan Tornado.Engine is in good shape 800 hrs. When trying to fly around the pattern the CHT will trend towards overheat about, half way around I aborted at 270 F , the oil temp also looks like it would over temp--250 F and going up After landing the temps continue to go up as I tried to idle and cool down. Removed the cowling and flew at various power settings and speeds for about an hour.All temps are normal-- oil @235F--CHT@around 200F. Another 912 uls user told me that when he first started up he had a over heat problem that was caused by a air bubble trapped in the water circuit that worked itself out over time. I would like to hear from any one that has had similar problem. Or know what might be causing it , and best of all the cure.Thanks Frank Goodnight Fayetteville Arkansas Kolb Firestar--HKS engine 200+ hrs. Zenith 701-- 912 ULS engine 1+ hrs ________________________________ Message 2 _____________________________________ Time: 09:06:02 PM PST US Subject: Re: Zenith701801-List: 912 over heating From: John Marzulli What cowling are you using? Do you have enough of the radiator exposed? Any pictures you can share? With the newer style 701 cowling my plane suffers from low oil & CHTs this time of year. The entire radiator and oil cooler are covered in aluminum tape. John Marzulli http://MarzulliPhoto.net/ http://701Builder.blogspot.com/ On Sat, Dec 15, 2012 at 4:44 PM, frank goodnight wrote: > Hello 701 builders and flyers' > Just finished my 701 , about a hour and a half > flight time. > Have a problem with overheating --912 ULS-- > that came off a Titan Tornado.Engine is in good shape 800 hrs. > When trying to fly around the pattern the CHT will > trend towards overheat about, half way around I aborted at 270 F , the oil > temp > also looks like it would over temp--250 F and going up > After landing the temps continue to go up as I tried to idle > and cool down. Removed the cowling and flew at various > power settings and speeds for about an hour.All temps are normal-- > oil @235F--CHT@around 200F. > Another 912 uls user told me that when he first started up he had a over > heat problem that was caused by a air bubble trapped in the > water circuit that worked itself out over time. > I would like to hear from any one that has had similar > problem. Or know what might be causing it , and best of all the cure.Thanks > Frank Goodnight > Fayetteville Arkansas > Kolb Firestar--HKS engine 200+ hrs. > Zenith 701-- 912 ULS engine 1+ hrs > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith701801-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith701801-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith701801-list Browse Digests http://www.matronics.com/digest/zenith701801-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.