plus2s
Joined: 30 Nov 2006
Posts: 65
Location: NEW ZEALAND
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 Posted: Tue Jun 09, 2009 8:26 pm Post subject: Was- A-2200 oil leak |
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Thanks for sharing that Bob
We have just replaced a 2200 engine at 500 hours that broke a thru stud between numbers 3 & 4 cyl. We were running the carb as supplied but apparently it was too lean and when we replaced the stud the crankcase halves tightened on the crank.We have put a new (latest spec) motor in and have done 30 hours of circuit work. Haven't pulled the other motor apart yet, but it will have to be line bored and plan on fitting the later camshaft and followers
Regards
keith
--- On Wed, 10/6/09, BobsV35B(at)aol.com <BobsV35B(at)aol.com> wrote:
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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, 3:29 PM
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:
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