---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sun 06/24/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:15 AM - egt temp (paul baker) 2. 07:35 AM - Re: egt temp (Roger Lee) ________________________________ Message 1 _____________________________________ Time: 06:15:13 AM PST US From: "paul baker" Subject: RotaxEngines-List: egt temp I own a 601 hd with a 912usl. The egt runs in the mid 1500s at cruse.If you advance the throttle, the egt will run mid 1400.I checked the settings on the bing carb. the adjusting ring has 5 slots and the clip is in the next to the bottom slot. I was told to move the clip down one slot to increase the mixture. Do these temps seem to high? The engine runs smoth and I don't want to mess something up. The plugs are a light brown and show no sign of being too hot paul baker zodiac 601 190total hrs 50 by me ________________________________ Message 2 _____________________________________ Time: 07:35:05 AM PST US Subject: RotaxEngines-List: Re: egt temp From: "Roger Lee" Hi Paul, Need to know a few things first. What altitude is your field and most of your cruising done at? What is your cruise engine RPM? Rotax 912's run hotter usually between 4400-4800 rpm and starts to cool down around 4800 and keeps cooling right on up to 5100-5200 rpm depending on the individual engine. 5000-5100 should see its coolest cruise. Rotax engines were set up to cruise between 4800-5200 rpm for several different reasons. It should start cooling down again once you go down to 4300 rpm and below. What are your cyl. head temps running? These temps do seem a little high. My temps at 4700 rpm can go up to 1450-1475 egt and will cool down to 1350-1375 egt at 5000 rpm. People with enclosed engines under cowlings may see some higher temps verses people that have open air engines. My engine is enclosed under a cowling. What is your WOT rpm? It should be 5500 rpm? If it is pitched too much you might want to consider taking out a small amount of pitch so the engine is not working so hard at your cruise rpm. All these things can have an influence on your temps. These answers can help diagnose your problem. If you don't have the answers fly it once and write them down, then we can probably figure it out without guessing and doing things just to do something. What type of coolant are you using? They make two different size of radiators, which do you have? -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=120328#120328 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-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/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-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.