Forget the leakage test. Get it started, with a normal warm up, if it runs ok , tie it down and run up at at half throttle unit at normal operating temp, then run at WOT do normal slow down and shut down, then do the leakage test when HOT. If reasonable, fly, then do another leakage test, then, that should be what you go on. Don’t do a leakage test on and engine that been sitting Phil Sent from my iPhone
> On 28 Apr 2025, at 12:20, Lee Shook via KRnet <krnet@list.krnet.org> wrote: > > Good evening gentlemen, looking for a little insight. I rebuilt the top end > of a 2100 D Revmaster new cylinders, pistons rings new heads assembled it and > did a leak down test and they’re all between 75/80 and 76/80 flown it for 5.2 > Hours, ran very well, it has been a hanger queen for the past 3 years, with > no time on it since the original 5.2 due to flying commercially. So I dusted > off the wings and went to work, have been giving it a thorough check over, > started with a leakdown, failed miserably!!! One cylinder at 20/80 10/80 > 64/80 66/80. One low cylinder leaks out the exhaust, and the other out the > intake. > Am I missing something here, and yes, TDC, even pulled the rocker assembly > off valves are closed. > Carbon under the valve seats? Substandard parts? Let me know your thoughts, > thks in advance. > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet
