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Date: Fri, 10 Apr 2009 20:23:04 -0400
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Subject: Walter Atkinson -- Engine Break In
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I'm directing this question to Walter Atkinson, but I think it will be of interest to the entire Lancair community -- plus any other homebuilder group.

I have a factory new Lycoming engine on my Lancair (IO-360-B1F).? It came from the factory having been run in their test cell for a little over an hour (standard run-in, I did not ask for anything special).? It even came with a test?log sheet and a?nifty litle certificate that says "No further run-in is required".

I plan to run the engine for the first time this summer, although I will probably not be flying for another year.? Should I be limiting this engine run to just a few minutes at idle power only, or can I feel free to run it up to 2500 RPM and exercise the controllable pitch prop?? Should I worry about glazing over the cylinder walls or has the factory run-in taken care of that?

I know it is not fully broken in, but could I be damaging it (glazing the cylinders) if I do this wrong?

After I do this, I'll probably put the dehydrator plugs back in, plus plug the exhaust pipes and reconnect a silica-gel bottle to the crankcase breather tube, but I probably won't "pickle" the engine.

For what it is worth, the engine has a cooling plenum so I should be able to run it for awhile without overheating.

Thanks in advance for your advice.

- Rob Wolf

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I'm directing this question to Walter Atkinson, but I think it will be of interest to the entire Lancair community -- plus any other homebuilder group.<br>
<br>
I have a factory new Lycoming engine on my Lancair (IO-360-B1F).&nbsp; It came from the factory having been run in their test cell for a little over an hour (standard run-in, I did not ask for anything special).&nbsp; It even came with a test&nbsp;log sheet and a&nbsp;nifty litle certificate that says "No further run-in is required".<br>
<br>
I plan to run the engine for the first time this summer, although I will probably not be flying for another year.&nbsp; Should I be limiting this engine run to just a few minutes at idle power only, or can I feel free to run it up to 2500 RPM and exercise the controllable pitch prop?&nbsp; Should I worry about glazing over the cylinder walls or has the factory run-in taken care of that?<br>
<br>
I know it is not fully broken in, but could I be damaging it (glazing the cylinders) if I do this wrong?<br>
<br>
After I do this, I'll probably put the dehydrator plugs back in, plus plug the exhaust pipes and reconnect a silica-gel bottle to the crankcase breather tube, but I probably won't "pickle" the engine.<br>
<br>
For what it is worth, the engine has a cooling plenum so I should be able to run it for awhile without overheating.<br>
<br>
Thanks in advance for your advice.<br>
<br>
- Rob Wolf<div id='MAILCIAMB027-5c4949df937533a' class='aol_ad_footer'><br/><font style="color:black;font:normal 10pt arial,san-serif;"> <hr style="margin-top:10px"/>Get the scoop on the live music scene in your area and hit a show tonight. <a href="http://www.tourtracker.com/?ncid=emlcntusmusi00000005">Check out TourTracker.com</a>!</font> </div>

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