---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sat 06/20/09: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:29 PM - 582 egt mismatch (carlisle) 2. 03:50 PM - Re: 582 egt mis-match (william sullivan) 3. 03:57 PM - Re: 582 egt mismatch (garyo1) 4. 05:09 PM - Re: 582 egt mismatch (carlisle) 5. 05:41 PM - Re: Re: 582 egt mismatch (Bob Comperini) ________________________________ Message 1 _____________________________________ Time: 03:29:28 PM PST US Subject: RotaxEngines-List: 582 egt mismatch From: "carlisle" Hi folks...I've been lurking for some time and finally need to chime in with a question. My Model II Kitfox is almost 20 years old now and I've only put 150 hours on it. I let it sit idle for 4 years without running the 582 Rotax and decided to resurrect it this summer. Did a top overhaul and inspected the crank (didn't split the case), buttoned it up with new gaskets after decarbonizing everything and it runs fine. When I had the cylinders off, everything looked spotless. Good needle bearings on the con rods, etc. Cylinders don't even look broken in with new looking crosshatching on the walls. Problem is this. Carbs won't match no matter what I do. Front cylinder runs hotter all the time. I've adjusted the jet needle, put in larger main jet (.175), matched the slides, etc and the fron always runs 100 to 150 deg hotter. Plugs show it too. The front ones are obviously leaner with only slight browning of the insulator. So the question is, if my crank seals are failing, wouldn't that lean BOTH the carbs out or are these symptoms something else? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249265#249265 ________________________________ Message 2 _____________________________________ Time: 03:50:07 PM PST US From: william sullivan Subject: RotaxEngines-List: Re: 582 egt mis-match - Get a couple of carb kits and clean and re-build them.- My Bing 54 wa s full of goo. - - ------------------------- -------------------- Bill Sullivan ------------------------- -------------------- Windsor locks, Ct. ------------------------- -------------------- Kolb Firestar 447 ________________________________ Message 3 _____________________________________ Time: 03:57:06 PM PST US Subject: RotaxEngines-List: Re: 582 egt mismatch From: "garyo1" As I recall, there is a center section between the halves of the engine that somewhat isolate the two chambers from each other. This is due to the two stroke needing to draw all of it's air from the crankcase, therefore the need for isolation. However there is some leakage so there is sufficient oil to the center bearings on the crankshaft. I am not a Rotax tech but this is my understanding of the engine, FWIW. -------- GARY N ORPE Backwardsville, CA., USA Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249275#249275 ________________________________ Message 4 _____________________________________ Time: 05:09:10 PM PST US Subject: RotaxEngines-List: Re: 582 egt mismatch From: "carlisle" Hmm. Didn't know this. Thought the 2 crankcase halves communicated. Not looking good for a simple explanation. Also, I rebuilt the carbs and have switched them too and it makes no difference. Any way to change the PTO side seal without splitting the crankcase? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249287#249287 ________________________________ Message 5 _____________________________________ Time: 05:41:53 PM PST US From: Bob Comperini Subject: Re: RotaxEngines-List: Re: 582 egt mismatch On 05:08 PM 6/20/2009, carlisle wrote: > >Hmm. Didn't know this. Thought the 2 crankcase halves communicated. Not looking good for a simple explanation. Think about it... you basically have two "one cylinder" engines bolted together. They do NOT share a common crankcase. The engine wouldn't work, if it did! -- Bob Comperini e-mail: bob@fly-ul.com WWW: http://www.fly-ul.com ------------------------------------------------------------------------------------- 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.