---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Wed 10/10/07: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:50 AM - Rocker arm bushing update (Lynn Matteson) 2. 08:22 AM - Re: Rocker arm bushing update (Noel Loveys) 3. 03:02 PM - Re: Rocker arm bushing update (Peter Harris) ________________________________ Message 1 _____________________________________ Time: 03:50:07 AM PST US From: Lynn Matteson Subject: JabiruEngine-List: Rocker arm bushing update For anyone interested, I just re-checked my valve lash (prior to heading to Kitty Hawk this weekend), and they were all .008"---.010". A bit of history: I changed the rocker arm bushings after the originals "went South" at 273 hours. I installed brass bushings with no teflon coating. I checked and re-set the lash/clearance 15 hours after the bushing replacement, and now have 420 hours total on the engine. Prior to changing the bushings, the valve lash would always increase...up to .016" on some of the valves, due to the bushing material being worn away. I felt comfortable enough with my modification that I flew from Michigan to California and back, to New York and back, Oshkosh, etc. Lynn Matteson Grass Lake, Michigan Kitfox IV Speedster w/Jabiru 2200 flying w/400+ hrs do not archive ________________________________ Message 2 _____________________________________ Time: 08:22:22 AM PST US From: "Noel Loveys" Subject: RE: JabiruEngine-List: Rocker arm bushing update I think there was a similar problem with the cam gear drive on the old GM 302. Teflon wear caused the cams to "go bad" Noel > -----Original Message----- > From: owner-jabiruengine-list-server@matronics.com > [mailto:owner-jabiruengine-list-server@matronics.com] On > Behalf Of Lynn Matteson > Sent: Wednesday, October 10, 2007 8:24 AM > To: jabiruengine-list@matronics.com > Subject: JabiruEngine-List: Rocker arm bushing update > > > > > For anyone interested, I just re-checked my valve lash (prior to > heading to Kitty Hawk this weekend), and they were all .008"---.010". > > A bit of history: I changed the rocker arm bushings after the > originals "went South" at 273 hours. I installed brass bushings with > no teflon coating. I checked and re-set the lash/clearance 15 hours > after the bushing replacement, and now have 420 hours total on the > engine. Prior to changing the bushings, the valve lash would always > increase...up to .016" on some of the valves, due to the bushing > material being worn away. I felt comfortable enough with my > modification that I flew from Michigan to California and > back, to New > York and back, Oshkosh, etc. > > Lynn Matteson > Grass Lake, Michigan > Kitfox IV Speedster w/Jabiru 2200 > flying w/400+ hrs > do not archive > > > > > > > ________________________________ Message 3 _____________________________________ Time: 03:02:15 PM PST US From: "Peter Harris" Subject: RE: JabiruEngine-List: Rocker arm bushing update Great work Lynn. Have you posted details of the brass bushes? Is this the J3300 or 2200? Peter H -----Original Message----- From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Lynn Matteson Sent: Wednesday, 10 October 2007 8:54 PM Subject: JabiruEngine-List: Rocker arm bushing update For anyone interested, I just re-checked my valve lash (prior to heading to Kitty Hawk this weekend), and they were all .008"---.010". A bit of history: I changed the rocker arm bushings after the originals "went South" at 273 hours. I installed brass bushings with no teflon coating. I checked and re-set the lash/clearance 15 hours after the bushing replacement, and now have 420 hours total on the engine. Prior to changing the bushings, the valve lash would always increase...up to .016" on some of the valves, due to the bushing material being worn away. I felt comfortable enough with my modification that I flew from Michigan to California and back, to New York and back, Oshkosh, etc. Lynn Matteson Grass Lake, Michigan Kitfox IV Speedster w/Jabiru 2200 flying w/400+ hrs do not archive ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.