 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
wb2ssj(at)rochester.rr.co
Guest
|
 Posted: Mon Mar 12, 2012 3:21 pm Post subject: 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
[quote][b]
| | - The Matronics JabiruEngine-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?JabiruEngine-List |
|
|
|
| Back to top |
|
 |
xair899
Joined: 31 Jan 2010
Posts: 2
|
| Posted: Mon Mar 12, 2012 11:59 pm Post subject: 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
| | - The Matronics JabiruEngine-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?JabiruEngine-List |
|
|
|
| Back to top |
|
|
pete(at)usjabiru.com
Guest
|
| Posted: Tue Mar 13, 2012 7:58 am Post subject: 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(at)matronics.com [mailto:owner-jabiruengine-list-server(at)matronics.com] On Behalf Of Tex Mantell
Sent: Monday, March 12, 2012 6:20 PM
To: lightning-list(at)matronics.com; jabiruengine-list(at)matronics.com
Subject: 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
| Quote: | | http://www.matronics.com/Navigator?JabiruEngine-List |
01234567
[quote][b]
| | - The Matronics JabiruEngine-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?JabiruEngine-List |
|
|
|
| Back to top |
|
|
aerobiz1(at)gmail.com
Guest
|
| Posted: Tue Mar 13, 2012 12:33 pm Post subject: worn valve guides |
|
|
I reckon that makes it a warranty issue, surely.....
Martin
On Tue, Mar 13, 2012 at 9:31 PM, Tex Mantell <wb2ssj(at)rochester.rr.com (wb2ssj(at)rochester.rr.com)> wrote:
[quote]--> JabiruEngine-List message posted by: "Tex Mantell" <wb2ssj(at)rochester.rr.com (wb2ssj(at)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
---
| | - The Matronics JabiruEngine-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?JabiruEngine-List |
|
|
|
| Back to top |
|
|
matronics(at)rtist.nl
Guest
|
| Posted: Tue Mar 13, 2012 1:06 pm Post subject: 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: [quote]I reckon that makes it a warranty issue, surely.....
Martin
On Tue, Mar 13, 2012 at 9:31 PM, Tex Mantell <wb2ssj(at)rochester.rr.com (wb2ssj(at)rochester.rr.com)> wrote:
[quote]--> JabiruEngine-List message posted by: "Tex Mantell" <wb2ssj(at)rochester.rr.com (wb2ssj(at)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
---
| | - The Matronics JabiruEngine-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?JabiruEngine-List |
|
|
|
| Back to top |
|
|
djtoddb
Joined: 26 Mar 2010
Posts: 14
Location: Mesa, AZ
|
| Posted: Wed Mar 14, 2012 5:57 pm Post subject: worn valve guides |
|
|
Thanks for putting things in perspective Pete! 
Todd Bristol
--- On Tue, 3/13/12, Pete Krotje <pete(at)usjabiru.com> wrote:
| Quote: |
From: Pete Krotje <pete(at)usjabiru.com>
Subject: RE: worn valve guides
To: jabiruengine-list(at)matronics.com
Date: Tuesday, March 13, 2012, 8:56 AM
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(at)matronics.com [mailto:owner-jabiruengine-list-server(at)matronics.com] On Behalf Of Tex Mantell
Sent: Monday, March 12, 2012 6:20 PM
To: lightning-list(at)matronics.com; jabiruengine-list(at)matronics.com
Subject: 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
| Quote: |
http://www.matronics.com/Navigator?JabiruEngine-List
|
01234567
8
|
[quote][b]
| | - The Matronics JabiruEngine-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?JabiruEngine-List |
|
_________________
Titan Tornado II with Jab 3300 |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
