---------------------------------------------------------- Engines-List Digest Archive --- Total Messages Posted Sun 08/05/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:12 PM - Oil thermostatic by pass valves. (Walt Murphy) 2. 01:30 PM - Re: Oil thermostatic by pass valves. (Gene Smith) ________________________________ Message 1 _____________________________________ Time: 12:12:45 PM PST US From: Walt Murphy Subject: Engines-List: Oil thermostatic by pass valves. Question: Does anyone know just exactly how far the vern a therm ( by pass valve ) is supposed to stretch when at temperature? We have an oil temp problem and the by pass valve was replaced. ( ECI PMA replacement part ) . It did not solve the problem. Looking at the NEW part there was NO wear mark at all on the seating face of the valve. Placing it into a cup of boiling water it grew 0.107 from the ambient length. I also measured another ( old Lycoming part ) it grew 0.180 Also when I look at the ECI part in the oil filter adapter housing , it sits deeper than the Lycoming part. ( It appears that the ECI part would need to "grow" over 1/4 inch to make contact compared to maybe 1/16 to 1/8 inch on the Lycoming part. Thanks, Walt ________________________________ Message 2 _____________________________________ Time: 01:30:54 PM PST US From: "Gene Smith" Subject: Re: Engines-List: Oil thermostatic by pass valves. Walt...................Lycoming Engines, 652 Oliver St., Williamsport, Pa. 17701.........570-323-6181..........Ask for "SUPPORT CENTER." 0800-1700 EDT, Mon-Fri...I'm sure the engineers will have an answer for you.....................................www.lycoming.textron.com/index.jsp CHEERS!!!! and good luck.............Gene Smith. ----- Original Message ----- From: "Walt Murphy" Sent: Sunday, August 05, 2007 2:09 PM Subject: Engines-List: Oil thermostatic by pass valves. > > Question: > > Does anyone know just exactly how far the vern a therm ( by pass valve ) > is supposed to stretch when at temperature? > > We have an oil temp problem and the by pass valve was replaced. ( ECI > PMA replacement part ) . It did not solve the problem. Looking at the > NEW part there was NO wear mark at all on the seating face of the valve. > Placing it into a cup of boiling water it grew 0.107 from the ambient > length. I also measured another ( old Lycoming part ) it grew 0.180 > > Also when I look at the ECI part in the oil filter adapter housing , it > sits deeper than the Lycoming part. ( It appears that the ECI part would > need to "grow" over 1/4 inch to make contact compared to maybe 1/16 to > 1/8 inch on the Lycoming part. > > Thanks, > Walt > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message engines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Engines-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/engines-list Browse Digests http://www.matronics.com/digest/engines-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.