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jvanlaak(at)aol.com
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 Posted: Sat Jun 06, 2009 6:25 pm Post subject: Corrosion in 912 engines |
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All,
I have been considering buying a Mk III Extra that I like but which currently has a 582 on it and then converting it to a 912. There are a number of mid time engines for sale but I wonder how long they can sit without starting to corrode. I have had to replace cams and lifters on Lycomings that sat too long and would like to avoid it.
Does anyone on the list have experience with this? Or with signs that corrosion might be starting before the engine gets to the stage of "making metal?" What does a repair/overhaul for something like this run?
Thanks for any insight you can offer.
Jim Van Laak Wanna slim down for summer? Go to America Takes it Off to learn how.
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Thom Riddle
Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)
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| Posted: Sun Jun 07, 2009 2:18 am Post subject: Corrosion in 912 engines |
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Overhaul of 912 series engines, done by Rotax overhaul facility
generaly costs roughly 1/2 the cost of a new engine.
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Buffalo, NY (9G0)
Don't worry about old age... it doesn't last very long.
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lucien
Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM
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| Posted: Sun Jun 07, 2009 5:28 am Post subject: Re: Corrosion in 912 engines |
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| Thom Riddle wrote: | Overhaul of 912 series engines, done by Rotax overhaul facility
generaly costs roughly 1/2 the cost of a new engine. |
That's actually a pleasant surprise. Last I checked it was about 3/4 of new - for grins I asked Lockwood what it was for a 912ULS (which was about 16K new at the time) and they said it was about 12K.
1/2 of new and it's worth it to overhaul.....
LS
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LS
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by0ung(at)brigham.net
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| Posted: Sun Jun 07, 2009 11:37 pm Post subject: Corrosion in 912 engines |
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I have been considering buying a Mk III Extra that I like but which currently has a 582 on it and then converting it to a 912. There are a number of mid time engines for sale but I wonder how long they can sit without starting to corrode. I have had to replace cams and lifters on Lycomings that sat too long and would like to avoid it.
Jim Van Laak
Jim the time since it has run depends somewhat on what kind of oil used… a good mineral oil coats better than a full synthetic, and will keep the rust at bay better. Jim Hefner told me that he bought an engine that had been poured full of oil after a rebuild YEARS ago, and seemed to be in perfect condition. So it also will depend on what has been done since it last run.
Good luck
Boyd Young
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lucien
Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM
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| Posted: Mon Jun 08, 2009 6:30 am Post subject: Re: Corrosion in 912 engines |
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| by0ung(at)brigham.net wrote: |
Jim the time since it has run depends somewhat on what kind of oil used… a good mineral oil coats better than a full synthetic, and will keep the rust at bay better. Jim Hefner told me that he bought an engine that had been poured full of oil after a rebuild YEARS ago, and seemed to be in perfect condition. So it also will depend on what has been done since it last run.
Good luck
Boyd Young
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Friend of mine back in TX stored an A-65 by completely submerging the complete long block in a 55gal barrell of engine oil. He kept it like that for over 10 years while he waited for a plane to put it in.
Finally took it out for checkup and as you might expect there was zero corrosion anywhere on the engine, it was in same condition as when he dunked it........
Cleanup took a little while tho.......
LS
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