---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Tue 03/13/12: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:00 AM - Re: worn valve guides (xair899) 2. 04:31 AM - Re: Re: worn valve guides (Tex Mantell) 3. 08:58 AM - Re: worn valve guides (Pete Krotje) 4. 01:33 PM - Re: Re: worn valve guides (Martin Hone) 5. 02:06 PM - Re: Re: worn valve guides (Rob Turk) ________________________________ Message 1 _____________________________________ Time: 01:00:09 AM PST US Subject: JabiruEngine-List: Re: worn valve guides From: "xair899" Tex, Here in the UK guides were found "worn" at less than 50hrs. Careful measurement showed they were exactly 7.50mm bore, where the standard guide should be 7.05mm. Looks suspiciously like human error! Once the batch passed through the system, that particular problem went away. Not sure what serial number engines were affected. The majority of the oil fed to the heads is dumped on the inlet valve rather than the exhaust which really needs it. Try to persuade it to go where it would do more good - see Jabiru info on French site "Contrails" for some ideas. Nick Read this topic online here: http://forums.matronics.com/viewtopic.php?p=368330#368330 ________________________________ Message 2 _____________________________________ Time: 04:31:44 AM PST US From: "Tex Mantell" Subject: Re: JabiruEngine-List: Re: worn valve guides Nick, thanks for the info. Have come to the same conclusion that the guides were oversize for all the cylinders wore the same. Again thanks for the info. Tex ----- Original Message ----- From: "xair899" Sent: Tuesday, March 13, 2012 3:59 AM Subject: JabiruEngine-List: Re: worn valve guides > > Tex, > Here in the UK guides were found "worn" at less than 50hrs. Careful > measurement showed they were exactly 7.50mm bore, where the standard guide > should be 7.05mm. Looks suspiciously like human error! > Once the batch passed through the system, that particular problem went > away. Not sure what serial number engines were affected. > The majority of the oil fed to the heads is dumped on the inlet valve > rather than the exhaust which really needs it. Try to persuade it to go > where it would do more good - see Jabiru info on French site "Contrails" > for some ideas. > > Nick > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=368330#368330 > > > ________________________________ Message 3 _____________________________________ Time: 08:58:30 AM PST US From: "Pete Krotje" Subject: RE: JabiruEngine-List: worn valve guides Our experience has been that few of the engines show excessive valve guide wear. After selling nearly 1/3 of all Jabiru engines out in service, I don't sell many valve guides. We have just completed several 1000 hour top overhauls and found almost all the valve guides to be in good shape. There are over 20,000 valve guides in engines that I've sold and we sell a few dozen replacements each year. I don't think we are seeing a big problem but obviously a worn valve guide is a problem for an individual owner. Pete From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Tex Mantell Sent: Monday, March 12, 2012 6:20 PM Subject: JabiruEngine-List: worn valve guides Pete, I have received your coment on how I was wrong on the layout of the 3300 valves, but I was hoping for some insite to my problem rather than the way I discribed it. This problem has now surfaced in Europe and I was hoping for help for it will be showing up here soon. The valve guides on the exhaust are wearing out in less the 100 hours. Will there be anyone from Jabiru Au at Sun & Fun that I can talk to? Tex ________________________________ Message 4 _____________________________________ Time: 01:33:02 PM PST US Subject: Re: JabiruEngine-List: Re: worn valve guides From: Martin Hone I reckon that makes it a warranty issue, surely..... Martin On Tue, Mar 13, 2012 at 9:31 PM, Tex Mantell wrote: > wb2ssj@rochester.rr.com> > > Nick, thanks for the info. Have come to the same conclusion that the > guides were oversize for all the cylinders wore the same. Again thanks for > the info. Tex > ----- Original Message ----- From: "xair899" > To: > > Sent: Tuesday, March 13, 2012 3:59 AM > Subject: JabiruEngine-List: Re: worn valve guides > > >> >> Tex, >> Here in the UK guides were found "worn" at less than 50hrs. Careful >> measurement showed they were exactly 7.50mm bore, where the standard guide >> should be 7.05mm. Looks suspiciously like human error! >> Once the batch passed through the system, that particular problem went >> away. Not sure what serial number engines were affected. >> The majority of the oil fed to the heads is dumped on the inlet valve >> rather than the exhaust which really needs it. Try to persuade it to go >> where it would do more good - see Jabiru info on French site "Contrails" >> for some ideas. >> >> Nick >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/**viewtopic.php?p=368330#368330 >> >> >> >> >> >> >> >> >> >> >> >> > > ________________________________ Message 5 _____________________________________ Time: 02:06:02 PM PST US From: Rob Turk Subject: Re: JabiruEngine-List: Re: worn valve guides Martin, you are probably right. But I'd love to see some statistics about the number of warranty claims that Jabiru actually honors, even on obvious manufacturing issues like this. I'm not talking about dealers absorbing the pain, but the factory actually acknowledging a flaw and fixing it on their expense. And to differentiate, I would count out those folkes lucky enough to be within driving/flying distance so they can show up at the Jabiru doorstep. Rob On 3/13/2012 9:29 PM, Martin Hone wrote: > I reckon that makes it a warranty issue, surely..... > > Martin > > On Tue, Mar 13, 2012 at 9:31 PM, Tex Mantell > wrote: > > > > > Nick, thanks for the info. Have come to the same conclusion that > the guides were oversize for all the cylinders wore the same. > Again thanks for the info. Tex > ----- Original Message ----- From: "xair899" > > To: > > Sent: Tuesday, March 13, 2012 3:59 AM > Subject: JabiruEngine-List: Re: worn valve guides > > > > > > Tex, > Here in the UK guides were found "worn" at less than 50hrs. > Careful measurement showed they were exactly 7.50mm bore, > where the standard guide should be 7.05mm. Looks suspiciously > like human error! > Once the batch passed through the system, that particular > problem went away. Not sure what serial number engines were > affected. > The majority of the oil fed to the heads is dumped on the > inlet valve rather than the exhaust which really needs it. Try > to persuade it to go where it would do more good - see Jabiru > info on French site "Contrails" for some ideas. > > Nick > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=368330#368330 > > > =================================== > - > ine-List" > target="_blank">http://www.matronics.com/Navigator?JabiruEngine-List > =================================== > MS - > k">http://forums.matronics.com > =================================== > e - > -Matt Dralle, List Admin. > t="_blank">http://www.matronics.com/contribution > =================================== > > > * > > > * ------------------------------------------------------------------------------------- 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.