---------------------------------------------------------- Stratus-List Digest Archive --- Total Messages Posted Fri 05/07/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:14 AM - Re: egt readings (Larry McFarland) ________________________________ Message 1 _____________________________________ Time: 11:14:10 AM PST US From: Larry McFarland Subject: Re: Stratus-List: egt readings Don, The volume of air to the Bings has a good deal to do with differences in EGT. I found the cool side was getting less air pressure to the air filter than the warm side. Don't think you have any leaks and a well-adjusted pair of Bings will provide EGTs of plus or minus 50 degrees of one another side to side. 1350 is a good target for EGTs at 4500 to 4800 rpm in cruise. Would think EGTs would be lower at 3500 rpm. With the HDS wing, one seldom cruises below 4000 rpm. If you have a bad ignition wire, EGTs should show an over-rich condition (lower temps). Going with the higher temp suggests a lean condition resulting from too much air and /or no problems with the ignition wires that side. Example, in a steep descent toward the airport from 3000 feet, my reduced rpms will often see the EGT approach 1450, my set point for the caution light. I have to pull the enrichment half way out to get enough fuel to cool things. The EGTs nearly drop immediately and seldom return the rest of the way down. Excess air in descent creates a very lean condition temporarily at low rpms, 3500 to 3700 rpm. Something to consider, Larry McFarland 601HDS at www.macsmachine.com Stratus Subaru at 155 hours. Don Walker wrote: > What are normal values for egt in the mid range...say 3500 rpm. I just > installed a dual egt...been running it without one all these years. > > My idle egt readings are even with smooth running up to about 1700 rpm > or so. Then I'm getting rough running with my left bank showing about > 900 and the right up to 1250. This problem has just developed with > about 450 hrs on the Bing carbs. Can't find any air leaks, but it > occured to me I don't know what normal is...could be the left is too cool. > > Compression is even all the way around. don walker > * > * ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message stratus-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Stratus-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/stratus-list Browse Digests http://www.matronics.com/digest/stratus-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.