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		Kayberg(at)aol.com Guest
 
 
 
 
 
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				 Posted: Wed Jun 10, 2009 2:40 am    Post subject: A-2200 oil leak | 
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				I changed to multigrade oil too soon on a 2200 and had to go back to  straight oil for 50 hours to get more power and lower oil consumption.
   
  Maybe the factory knows best?
   
   
  Doug Koenigsberg
   
   
   
  In a message dated 6/9/2009 11:42:30 P.M. Eastern Daylight Time,  BobsV35B(at)aol.com writes:
   	  | Quote: | 	 		     Agreed Keith, 
     
    Most shops are still recommending a "break in" oil, but many top shops    have switched over to recommending using multigrade. I was an early adopter    and have been very happy. 
     
    I did follow the recommendation to fly it hard right away. Seventy-five    percent or higher with particular effort to keep cylinder pressures    high.. 
     
    I spent many hours as a young aviator slow timing engines. I now believe    that was a major waste of time and I do not think the engines ever ran as good    as do those that we break in hard and early. The slow time and heavy oils may    have been needed fifty to sixty years ago when fits and finish were not as    good as they are today. 
     
    My last two certificated engines I even broke in using lean of peak    mixtures. That is a bit trickier because you have to be sure the mixture    distribution to every cylinder is extremely accurate and well balanced, but it    does work if all the bases are covered. 
     
    Unfortunately, I know of no way to do that with a Jabiru.  I broke    in a 3300 last year, but just used the mixture as it came from the factory. We    did run it hard though and used multi grade oil.  In an effort to get it    ready for Sun and Fun, I flew the thing 24 hours in three days! Our son and    his daughter flew off the rest of the time in a couple of days before taking    it to the show.
     
    Happy Skies,
     
    Old Bob
     
       In a message dated 6/9/2009 10:10:17 P.M. Central Daylight Time,    kpickford(at)xtra.co.nz writes:
     	  | Quote: | 	 		                                         Hi Bob
             
            That's interesting - as you say - is it an old wives tail - I            believe Jabiru and Lycoming still recommend straight oil initially. I            believed the reason was that the friction reducing additives             would glaze the bores before the rings were bedded in.  I'm            certainly no expert on oils, but have had a good result with aviation            multi grade with our variations of temperature here. And of course we            could start another discussion on the best way to break in a new            engine ???
             
            Regards
            Keith
 
 --- On Wed, 10/6/09, BobsV35B(at)aol.com            <BobsV35B(at)aol.com> wrote:
 
             	  | Quote: | 	 		  
 From:              BobsV35B(at)aol.com <BobsV35B(at)aol.com>
 Subject: Re:              Re: A-2200 oil leak
 To:              jabiruengine-list(at)matronics.com
 Received: Wednesday, 10 June,              2009, 2:29 PM
 
                           Good Evening Keith,
               
              Just out of curiosity, why do you want to use a different oil              for break in than you do for normal use?
               
              Following the recommendation of a local Boutique engine shop              owner, I have broken in my last three engines using multigrade              aviation oil. Seemed to work just fine. They all ran good, broke in              fast and seem to be doing just fine. The rings were fully seated in              way less than five hours. The first one I broke in that way was              retired after running eighteen hundred hours without a cylinder              being pulled or any major component needing service.  I              think the old mineral oil idea is just an ancient Old Wive's              Tale!
               
              Happy Skies,
               
              Old Bob
               
                           In a message dated 6/9/2009 9:00:08 P.M. Central Daylight Time,              kpickford(at)xtra.co.nz writes:
               	  | Quote: | 	 		                                                                                           Hi Chris
                       
                      Only other thought at this stage is don't hurry to                      change from the straight (running in) oil if the oil burn                      has not settled - we have one motor done 42 hours and                      haven't changed to the multi grade yet.
                       
                      Regards
                      Keith
 
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		Lynn Matteson
 
 
  Joined: 10 Jan 2006 Posts: 2778 Location: Grass Lake, Michigan
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				 Posted: Wed Jun 10, 2009 4:10 am    Post subject: A-2200 oil leak | 
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				It sounds like this is a training airplane, perhaps? And it sounds  
 like you are in the maintenance end of things? That sounds like the  
 best way to get a lot of experience with Jabiru's, and keep on top of  
 what is going on with them.
 
 When my rocker bushings went bad...273 hours....I replaced all of  
 them with plain bushings, no teflon coating, and this took care of  
 the changing valve lash problem. Now when I do a valve lash check, I  
 find only a rare valve that is off by one-thousandth or so.
 
 Then when my crankshaft timing gear broke (engine stopped, landed in  
 a wheat field) I overhauled the whole engine, including new valves  
 and guides, rings, bearings, and a new crank. I've got about 110  
 hours on the rebuild.
 
 Lynn Matteson
 Kitfox IV Speedster, taildragger
 Jabiru 2200, #2062, 672.2 hrs
 Sensenich 62x46 Wood prop
 Electroair direct-fire ignition system
 Status: flying
 
 
 On Jun 9, 2009, at 9:46 PM, Keith Pickford wrote:
 
  	  | Quote: | 	 		   Hi Lynn
 
  Yes checked them all - the two I replaced were both on number one  
  cyl. Will be doing a top overhaul before too long. Went with the  
  oil thermostat as we have many people of different experience  
  levels flying the aircraft and I wanted to keep it simple.
  Also about to strip a earley hydraulic lifter engine (ser # 2440)  
  that needs line boring after 500 hours.
 
  Regards
  Keith
 
  --- On Wed, 10/6/09, Lynn Matteson <lynnmatt(at)jps..net> wrote:
 
  From: Lynn Matteson <lynnmatt(at)jps.net>
  Subject: Re: Re: A-2200 oil leak
  To: jabiruengine-list(at)matronics.com
  Received: Wednesday, 10 June, 2009, 12:37 PM
 
  
  <lynnmatt(at)jps.net>
 
  Hi Keith-
  Did you look at all the rocker bushings when you did the two? I'm  
  surprised only two needed replacing.
 
  I decided against the oil thermostat because of the extra fittings  
  involved, and instead installed a butterfly-type valve to regulate  
  the air to the oil cooler. It works very well until I forget  
  sometimes to open it and that's when I wished I had the 'stat. : )  
  I can actually leave it closed all winter long (flying on skis),  
  and this gets me into the habit of sometimes forgetting it, but the  
  warning light gets my attention.
 
  Lynn Matteson
  Kitfox IV Speedster, taildragger
  Jabiru 2200, #2062, 672.2 hrs
  Sensenich 62x46 Wood prop
  Electroair direct-fire ignition system
  Status: flying
  do not archive
 
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  _________________ Lynn
 
Kitfox IV-Jabiru 2200
 
N369LM | 
			 
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		Lynn Matteson
 
 
  Joined: 10 Jan 2006 Posts: 2778 Location: Grass Lake, Michigan
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				 Posted: Wed Jun 10, 2009 4:18 am    Post subject: A-2200 oil leak | 
				     | 
			 
			
				
  | 
			 
			
				I ran my (self) rebuilt engine for 50 hours on Aeroshell mineral oil  
 as per the Jabiru manual (the oil, not the hours), but was curious as  
 to why mineral oil, and a local aircraft engine rebuilder, as well as  
 other local fliers. told me that the rings seat better with no  
 additives. At least as far as I can tell, my engine is producing more  
 power now than it did before. Of course, the old rings had more than  
 double the end gap as the replacement rings, and this would probably  
 account for a lot of that.
 
 Lynn Matteson
 Kitfox IV Speedster, taildragger
 Jabiru 2200, #2062, 672.2 hrs
 Sensenich 62x46 Wood prop
 Electroair direct-fire ignition system
 Status: flying
 
 
 On Jun 10, 2009, at 6:32 AM, Kayberg(at)aol.com wrote:
 
  	  | Quote: | 	 		   I changed to multigrade oil too soon on a 2200 and had to go back  
  to straight oil for 50 hours to get more power and lower oil  
  consumption.
 
  Maybe the factory knows best?
  Doug Koenigsberg
 
  In a message dated 6/9/2009 11:42:30 P.M. Eastern Daylight Time,  
  BobsV35B(at)aol.com writes:
  Agreed Keith,
 
  Most shops are still recommending a "break in" oil, but many top  
  shops have switched over to recommending using multigrade. I was an  
  early adopter and have been very happy.
 
  I did follow the recommendation to fly it hard right away. Seventy- 
  five percent or higher with particular effort to keep cylinder  
  pressures high..
 
  I spent many hours as a young aviator slow timing engines. I now  
  believe that was a major waste of time and I do not think the  
  engines ever ran as good as do those that we break in hard and  
  early. The slow time and heavy oils may have been needed fifty to  
  sixty years ago when fits and finish were not as good as they are  
  today.
 
  My last two certificated engines I even broke in using lean of peak  
  mixtures. That is a bit trickier because you have to be sure the  
  mixture distribution to every cylinder is extremely accurate and  
  well balanced, but it does work if all the bases are covered.
 
  Unfortunately, I know of no way to do that with a Jabiru.  I broke  
  in a 3300 last year, but just used the mixture as it came from the  
  factory. We did run it hard though and used multi grade oil.  In an  
  effort to get it ready for Sun and Fun, I flew the thing 24 hours  
  in three days! Our son and his daughter flew off the rest of the  
  time in a couple of days before taking it to the show.
 
  Happy Skies,
 
  Old Bob
 
  In a message dated 6/9/2009 10:10:17 P.M. Central Daylight Time,  
  kpickford(at)xtra.co.nz writes:
  Hi Bob
 
  That's interesting - as you say - is it an old wives tail - I  
  believe Jabiru and Lycoming still recommend straight oil initially.  
  I believed the reason was that the friction reducing additives   
  would glaze the bores before the rings were bedded in.  I'm  
  certainly no expert on oils, but have had a good result with  
  aviation multi grade with our variations of temperature here. And  
  of course we could start another discussion on the best way to  
  break in a new engine ???
 
  Regards
  Keith
 
  --- On Wed, 10/6/09, BobsV35B(at)aol.com <BobsV35B(at)aol.com> wrote:
 
  From: BobsV35B(at)aol.com <BobsV35B(at)aol.com>
  Subject: Re: Re: A-2200 oil leak
  To: jabiruengine-list(at)matronics.com
  Received: Wednesday, 10 June, 2009, 2:29 PM
 
  Good Evening Keith,
 
  Just out of curiosity, why do you want to use a different oil for  
  break in than you do for normal use?
 
  Following the recommendation of a local Boutique engine shop owner,  
  I have broken in my last three engines using multigrade aviation  
  oil. Seemed to work just fine. They all ran good, broke in fast and  
  seem to be doing just fine. The rings were fully seated in way less  
  than five hours. The first one I broke in that way was retired  
  after running eighteen hundred hours without a cylinder being  
  pulled or any major component needing service.  I think the old  
  mineral oil idea is just an ancient Old Wive's Tale!
 
  Happy Skies,
 
  Old Bob
 
  In a message dated 6/9/2009 9:00:08 P.M. Central Daylight Time,  
  kpickford(at)xtra.co.nz writes:
  Hi Chris
 
  Only other thought at this stage is don't hurry to change from the  
  straight (running in) oil if the oil burn has not settled - we have  
  one motor done 42 hours and haven't changed to the multi grade yet.
 
  Regards
  Keith
 
  A Good Credit Score is 700 or Above.ol?redir=http:// 
  www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62% 
  26bcd=JunestepsfooterNO62>See yours in just 2 easy steps!
  ist" target=_blank rel=nofollow>http://www.matronics.com/Navigator? 
  JabiruEngine-List =nofollow>http://forums.matronics.com blank  
  rel=nofollow>http://www.matronics.com/contribution
  ==================================== List href="http:// 
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  ==================================== ms.matronics.com/">http:// 
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  A Good Credit Score is 700 or Above. See yours in just 2 easy steps!
  ==================================== List href="http:// 
  www.matronics.com/Navigator?JabiruEngine-List">http:// 
  www.matronics.com/Navigator?JabiruEngine-List  
  ==================================== ms.matronics.com/">http:// 
  forums.matronics.com ==================================== tp:// 
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  _________________ Lynn
 
Kitfox IV-Jabiru 2200
 
N369LM | 
			 
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		BobsV35B(at)aol.com Guest
 
 
 
 
 
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				 Posted: Wed Jun 10, 2009 4:32 am    Post subject: A-2200 oil leak | 
				     | 
			 
			
				
  | 
			 
			
				Good Morning Lynn,
   
  Just goes to show that anecdotal evidence doesn't mean a lot. 
   
  I have had much better luck with the engines I broke in using the same oil  I intended to operate them on, but I also now break in engines at a lot higher  cylinder pressures than I did in earlier days.
   
  Times change and I am sure my ideas will change when other evidence  presents itself.
   
  I think your ring gap is most likely the primary cause of any increase in  power!
   
  Happy Skies,
   
  Old Bob
   
   In a message dated 6/10/2009 7:18:34 A.M. Central Daylight Time,  lynnmatt(at)jps.net writes:
   	  | Quote: | 	 		  -->    JabiruEngine-List message posted by: Lynn Matteson    <lynnmatt(at)jps.net>
 
 I ran my (self) rebuilt engine for 50 hours on    Aeroshell mineral oil  
 as per the Jabiru manual (the oil, not the    hours), but was curious as  
 to why mineral oil, and a local aircraft    engine rebuilder, as well as  
 other local fliers. told me that the    rings seat better with no  
 additives. At least as far as I can tell,    my engine is producing more  
 power now than it did before. Of course,    the old rings had more than  
 double the end gap as the replacement    rings, and this would probably  
 account for a lot of    that.
 
 Lynn Matteson
 Kitfox IV Speedster, taildragger
 Jabiru 2200,    #2062, 672.2 hrs
 Sensenich 62x46 Wood prop
 Electroair direct-fire    ignition system
 Status: flying
 
 
 On Jun 10, 2009, at 6:32    AM, Kayberg(at)aol.com wrote:
 
  	  | Quote: | 	 		   I changed to multigrade oil too soon on    a 2200 and had to go back  
  to straight oil for 50 hours to get    more power and lower oil  
  consumption.
 
  Maybe the    factory knows best?
  Doug    Koenigsberg
 
  In a message dated 6/9/2009    11:42:30 P.M. Eastern Daylight Time,  
  BobsV35B(at)aol.com    writes:
  Agreed Keith,
 
  Most shops are still    recommending a "break in" oil, but many top  
  shops have switched    over to recommending using multigrade. I was an  
  early adopter    and have been very happy.
 
  I did follow the recommendation to    fly it hard right away. Seventy- 
  five percent or higher with    particular effort to keep cylinder  
  pressures    high..
 
  I spent many hours as a young aviator slow timing    engines. I now  
  believe that was a major waste of time and I do    not think the  
  engines ever ran as good as do those that we    break in hard and  
  early. The slow time and heavy oils may have    been needed fifty to  
  sixty years ago when fits and finish were    not as good as they are  
  today.
 
  My last two    certificated engines I even broke in using lean of peak  
     mixtures. That is a bit trickier because you have to be sure the     
  mixture distribution to every cylinder is extremely accurate    and  
  well balanced, but it does work if all the bases are    covered.
 
  Unfortunately, I know of no way to do that with a    Jabiru.  I broke  
  in a 3300 last year, but just used the    mixture as it came from the  
  factory. We did run it hard though    and used multi grade oil.  In an  
  effort to get it ready    for Sun and Fun, I flew the thing 24 hours  
  in three days! Our    son and his daughter flew off the rest of the  
  time in a couple    of days before taking it to the show.
 
  Happy    Skies,
 
  Old Bob
 
  In a message dated 6/9/2009    10:10:17 P.M. Central Daylight Time,  
  kpickford(at)xtra.co.nz    writes:
  Hi Bob
 
  That's interesting - as you say - is it    an old wives tail - I  
  believe Jabiru and Lycoming still    recommend straight oil initially.  
  I believed the reason was    that the friction reducing additives   
  would glaze the    bores before the rings were bedded in.  I'm  
  certainly no    expert on oils, but have had a good result with  
  aviation multi    grade with our variations of temperature here. And  
  of course we    could start another discussion on the best way to  
  break in a    new engine ???
 
  Regards
  Keith
 
  --- On    Wed, 10/6/09, BobsV35B(at)aol.com <BobsV35B(at)aol.com> wrote:
 
     From: BobsV35B(at)aol.com <BobsV35B(at)aol.com>
  Subject: Re:    Re: A-2200 oil leak
  To:    jabiruengine-list(at)matronics.com
  Received: Wednesday, 10 June, 2009,    2:29 PM
 
  Good Evening Keith,
 
  Just out of    curiosity, why do you want to use a different oil for  
  break in    than you do for normal use?
 
  Following the recommendation of a    local Boutique engine shop owner,  
  I have broken in my last    three engines using multigrade aviation  
  oil. Seemed to work    just fine. They all ran good, broke in fast and  
  seem to be    doing just fine. The rings were fully seated in way less  
  than    five hours. The first one I broke in that way was retired  
  after    running eighteen hundred hours without a cylinder being  
  pulled    or any major component needing service.  I think the old  
     mineral oil idea is just an ancient Old Wive's Tale!
 
  Happy    Skies,
 
  Old Bob
 
  In a message dated 6/9/2009    9:00:08 P.M. Central Daylight Time,  
  kpickford(at)xtra.co.nz    writes:
  Hi Chris
 
  Only other thought at this stage is    don't hurry to change from the  
  straight (running in) oil if the    oil burn has not settled - we have  
  one motor done 42 hours and    haven't changed to the multi grade yet.
 
  Regards
     Keith
 
  A Good Credit Score is 700 or Above.ol?redir=http://    
  www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%    
  26bcd=JunestepsfooterNO62>See yours in just 2 easy steps!
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		ces308
 
  
  Joined: 03 Nov 2008 Posts: 317 Location: houghton lake ,mi
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				 Posted: Wed Jun 10, 2009 4:31 pm    Post subject: Re: A-2200 oil leak | 
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				What kind of temps are you guys running cht/egt ?
 
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		imap8ntr(at)cox.net Guest
 
 
 
 
 
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				 Posted: Wed Jun 10, 2009 8:42 pm    Post subject: A-2200 oil leak | 
				     | 
			 
			
				
  | 
			 
			
				As you know CHT's largely depend on the fuselage, cowling and aircraft which 
 all regulate airflow over the cylinders.  EGT's depend on mixture.
 It looks like you have a challenger?
 Anyway at 8500ft, cruise power , 3300A engine, I get a range of 250-290 CHT 
 and EGT's of 1340-1392.  Thus I have no great spread from front to back and 
 right to left.
 
 Ivan
 ---
 
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		ces308
 
  
  Joined: 03 Nov 2008 Posts: 317 Location: houghton lake ,mi
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				 Posted: Wed Jun 10, 2009 9:50 pm    Post subject: Re: A-2200 oil leak | 
				     | 
			 
			
				
  | 
			 
			
				My 2200 today...a 70* day at 2500ft had an oil temp of 198-212 and a cht of 230 and egt of 1240-1290 at 2800 rpm.
 
 On another note what about the vent hole I have read about to be drilled in the rear valve covers ??  Is this necessary?  the engine is on a Kolb Mark 3 Xtra.
 
 chris ambrose
 
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		zeprep251(at)aol.com Guest
 
 
 
 
 
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				 Posted: Thu Jun 11, 2009 4:39 am    Post subject: A-2200 oil leak | 
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				Chris,
     Cyls hd 290,  egt1400
  
      G.Aman
  
    
  
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		Lynn Matteson
 
 
  Joined: 10 Jan 2006 Posts: 2778 Location: Grass Lake, Michigan
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				 Posted: Thu Jun 11, 2009 11:47 am    Post subject: A-2200 oil leak | 
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				Hi Bob-
 Yes, the ring gap being closed up, and perhaps the addition of the  
 Electroair direct fire ignition system, but I'm betting on the ring gap.
 
 Lynn Matteson
 Kitfox IV Speedster, taildragger
 Jabiru 2200, #2062, 672.2 hrs
 Sensenich 62x46 Wood prop
 Electroair direct-fire ignition system
 Status: flying
 
 
 On Jun 10, 2009, at 8:31 AM, BobsV35B(at)aol.com wrote:
 
  	  | Quote: | 	 		   Good Morning Lynn,
 
  Just goes to show that anecdotal evidence doesn't mean a lot.
 
  I have had much better luck with the engines I broke in using the  
  same oil I intended to operate them on, but I also now break in  
  engines at a lot higher cylinder pressures than I did in earlier days.
 
  Times change and I am sure my ideas will change when other evidence  
  presents itself.
 
  I think your ring gap is most likely the primary cause of any  
  increase in power!
 
  Happy Skies,
 
  Old Bob
 
  In a message dated 6/10/2009 7:18:34 A.M. Central Daylight Time,  
  lynnmatt(at)jps.net writes:
  
  <lynnmatt(at)jps.net>
 
  I ran my (self) rebuilt engine for 50 hours on Aeroshell mineral oil
  as per the Jabiru manual (the oil, not the hours), but was curious as
  to why mineral oil, and a local aircraft engine rebuilder, as well as
  other local fliers. told me that the rings seat better with no
  additives. At least as far as I can tell, my engine is producing more
  power now than it did before. Of course, the old rings had more than
  double the end gap as the replacement rings, and this would probably
  account for a lot of that.
 
  Lynn Matteson
  Kitfox IV Speedster, taildragger
  Jabiru 2200, #2062, 672.2 hrs
  Sensenich 62x46 Wood prop
  Electroair direct-fire ignition system
  Status: flying
 
 
  On Jun 10, 2009, at 6:32 AM, Kayberg(at)aol.com wrote:
 
  > I changed to multigrade oil too soon on a 2200 and had to go back
  > to straight oil for 50 hours to get more power and lower oil
  > consumption.
  >
  > Maybe the factory knows best?
  >
  >
  > Doug Koenigsberg
  >
  >
  >
  > In a message dated 6/9/2009 11:42:30 P.M. Eastern Daylight Time,
  > BobsV35B(at)aol.com writes:
  > Agreed Keith,
  >
  > Most shops are still recommending a "break in" oil, but many top
  > shops have switched over to recommending using multigrade. I was an
  > early adopter and have been very happy.
  >
  > I did follow the recommendation to fly it hard right away. Seventy-
  > five percent or higher with particular effort to keep cylinder
  > pressures high..
  >
  > I spent many hours as a young aviator slow timing engines. I now
  > believe that was a major waste of time and I do not think the
  > engines ever ran as good as do those that we break in hard and
  > early. The slow time and heavy oils may have been needed fifty to
  > sixty years ago when fits and finish were not as good as they are
  > today.
  >
  > My last two certificated engines I even broke in using lean of peak
  > mixtures. That is a bit trickier because you have to be sure the
  > mixture distribution to every cylinder is extremely accurate and
  > well balanced, but it does work if all the bases are covered.
  >
  > Unfortunately, I know of no way to do that with a Jabiru.  I broke
  > in a 3300 last year, but just used the mixture as it came from the
  > factory. We did run it hard though and used multi grade oil.  In an
  > effort to get it ready for Sun and Fun, I flew the thing 24 hours
  > in three days! Our son and his daughter flew off the rest of the
  > time in a couple of days before taking it to the show.
  >
  > Happy Skies,
  >
  > Old Bob
  >
  > In a message dated 6/9/2009 10:10:17 P.M. Central Daylight Time,
  > kpickford(at)xtra.co.nz writes:
  > Hi Bob
  >
  > That's interesting - as you say - is it an old wives tail - I
  > believe Jabiru and Lycoming still recommend straight oil initially.
  > I believed the reason was that the friction reducing additives
  > would glaze the bores before the rings were bedded in.  I'm
  > certainly no expert on oils, but have had a good result with
  > aviation multi grade with our variations of temperature here. And
  > of course we could start another discussion on the best way to
  > break in a new engine ???
  >
  > Regards
  > Keith
  >
  > --- On Wed, 10/6/09, BobsV35B(at)aol.com <BobsV35B(at)aol.com> wrote:
  >
  > From: BobsV35B(at)aol.com <BobsV35B(at)aol.com>
  > Subject: Re: Re: A-2200 oil leak
  > To: jabiruengine-list(at)matronics.com
  > Received: Wednesday, 10 June, 2009, 2:29 PM
  >
  > Good Evening Keith,
  >
  > Just out of curiosity, why do you want to use a different oil for
  > break in than you do for normal use?
  >
  > Following the recommendation of a local Boutique engine shop owner,
  > I have broken in my last three engines using multigrade aviation
  > oil. Seemed to work just fine. They all ran good, broke in fast and
  > seem to be doing just fine. The rings were fully seated in way less
  > than five hours. The first one I broke in that way was retired
  > after running eighteen hundred hours without a cylinder being
  > pulled or any major component needing service.  I think the old
  > mineral oil idea is just an ancient Old Wive's Tale!
  >
  > Happy Skies,
  >
  > Old Bob
  >
  > In a message dated 6/9/2009 9:00:08 P.M. Central Daylight Time,
  > kpickford(at)xtra.co.nz writes:
  > Hi Chris
  >
  > Only other thought at this stage is don't hurry to change from the
  > straight (running in) oil if the oil burn has not settled - we have
  > one motor done 42 hours and haven't changed to the multi grade yet.
  >
  > Regards
  > Keith
  >
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  _________________ Lynn
 
Kitfox IV-Jabiru 2200
 
N369LM | 
			 
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		Lynn Matteson
 
 
  Joined: 10 Jan 2006 Posts: 2778 Location: Grass Lake, Michigan
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				 Posted: Thu Jun 11, 2009 11:48 am    Post subject: A-2200 oil leak | 
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				My CHT's are comparably high, because I've attached my probes  
 directly to the head instead of being up in the airstream. Take a  
 look at where the reading area of your spark plug probes is, and  
 you'll find that you are not reading CHT, but rather the air  
 temperature NEAR the head. In my humble opinion, Jabiru should have  
 done this on all their engines, and we wouldn't have the problem of  
 putzing around with the spark plug washers every time we change  
 plugs, and get a more accurate reading of the actual temp of the  
 head.  My heads  run around 340 degrees F. EGT's vary from mid-1200's  
 to 1420 for the highest.
 
 Lynn Matteson
 Kitfox IV Speedster, taildragger
 Jabiru 2200, #2062, 672.2 hrs
 Sensenich 62x46 Wood prop
 Electroair direct-fire ignition system
 Status: flying
 
 
 On Jun 10, 2009, at 8:31 PM, ces308 wrote:
 
 
 
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  _________________ Lynn
 
Kitfox IV-Jabiru 2200
 
N369LM | 
			 
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