PS You can get a car compression tester and check the compressions when cold, They should all be simpler, ( low) that will tell you if you have a dirty or stuck valve 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
