---------------------------------------------------------- LycomingEngines-List Digest Archive --- Total Messages Posted Sat 05/11/13: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:38 AM - Re: O-320 Cylinder Heads Different Temperatures (Michael Kraus) 2. 05:48 AM - Re: O-320 Cylinder Heads Different Temperatures (FLYaDIVE) ________________________________ Message 1 _____________________________________ Time: 04:38:41 AM PST US Subject: Re: LycomingEngines-List: O-320 Cylinder Heads Different Temperatures From: Michael Kraus Can you better explain the temperatures and temperature differentials by cylinder? -Mike Kraus RV-4 sold :-( RV-10 flying :-) KitFox SS7 Radial building :-) On May 11, 2013, at 2:37 AM, George Nielsen wrote: > > According to the Vision Microsystems VMS 1000C display in my aircraft the temperatures of the cylinder heads differ when in flight. Could that cause problems? If so, what, and how can I remedy this? > > Thanks. > > George Nielsen > RV-6 PH-XGN > The Hague, the Netherlands > > > > ________________________________ Message 2 _____________________________________ Time: 05:48:54 AM PST US Subject: Re: LycomingEngines-List: O-320 Cylinder Heads Different Temperatures From: FLYaDIVE George: A temperature differential (delta) between both CHT & EGT that is poorly considered acceptable at 50 Deg F between cylinders. I think that is VERY POOR. I am seeing ONLY 15 Deg F delta on CHT. And in real cold days (32 F/0C) the delta drops down to about 5 Deg F on CHT's. I am not concerned with the delta on EGT's but I am on CHT's. I monitor CHT's during flight. As far as EGT's go... I can lean just as well with the EAR as with the EGT. So, how do you control the delta? A REAL tight fitting baffling system or plenum. I am luck as I have baffles. By controlling the fit around the starter ring gear, size of cowl exhaust ramps/flaps, fit of top to bottom of cowl, oil cooler location, and those highly forgotten little pieces of aluminum in front of cylinders 1 & 2. You can get the temps down. AND don't forget to install those fiberglass blisters INSIDE the cowl... You know, the two just after the intake ports - Mounted on the top of the cowl. DON'T ASK! I have also found the two louver vents on the bottom of the cowl work GREAT! Cooler engine and NO CO issues. *Barry* On Sat, May 11, 2013 at 2:37 AM, George Nielsen wrote: > genie@swissmail.org> > > According to the Vision Microsystems VMS 1000C display in my aircraft the > temperatures of the cylinder heads differ when in flight. Could that cause > problems? If so, what, and how can I remedy this? > > Thanks. > > George Nielsen > RV-6 PH-XGN > The Hague, the Netherlands ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message lycomingengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/LycomingEngines-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/lycomingengines-list Browse Digests http://www.matronics.com/digest/lycomingengines-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.