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
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| 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
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368330#368330
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | 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" <nickgeh@eircom.net>
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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| 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@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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 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@rochester.rr.com>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" <nickgeh@eircom.net>
> To: <jabiruengine-list@matronics.**com <jabiruengine-list@matronics.com>>
> 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<http://forums.matronics.com/viewtopic.php?p=368330#368330>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | 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 <wb2ssj@rochester.rr.com
> <mailto:wb2ssj@rochester.rr.com>> wrote:
>
> <wb2ssj@rochester.rr.com <mailto: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" <nickgeh@eircom.net
> <mailto:nickgeh@eircom.net>>
> To: <jabiruengine-list@matronics.com
> <mailto:jabiruengine-list@matronics.com>>
> Sent: Tuesday, March 13, 2012 3:59 AM
> Subject: JabiruEngine-List: Re: worn valve guides
>
>
> <nickgeh@eircom.net <mailto:nickgeh@eircom.net>>
>
> 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
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|