R
Rutus
When I got the RV painted last month I also wrapped up the annual, the 4th one to date. In the past, I had the local A&P do the leakdown check on the cylinders, but looking at the price for the test v. the price for the tools, I figured I ought to just buy it and do it myself. So, I took the plunge and bought the Eastman E2A-1000 kit, and did the test recently.
What I found a bit odd was that the results were 79, 79, 79 and 76/80 - and frankly, cylinders 1, 2, and 3 seemed to read almost 80/80. Cylinder 4 has always been a bit softer on compression and so the 76-77 reading there was no surprise.
I guess my question is this: isn't it expected that there is some leakage? An 80/80 test seemed, to me, to be too good to be true. This is a factory new O-360 with ~220 hrs on it now.
My main concern is the trend over time, and in that regard cylinders 1-3 have always been just a bit more hale and hearty than #4 (better cooling on 1-3 during break-in????), and from that standpoint things have not changed. But I am thinking that a "no leakage" result is too good to be true.![Roll eyes :rolleyes: :rolleyes:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
What I found a bit odd was that the results were 79, 79, 79 and 76/80 - and frankly, cylinders 1, 2, and 3 seemed to read almost 80/80. Cylinder 4 has always been a bit softer on compression and so the 76-77 reading there was no surprise.
I guess my question is this: isn't it expected that there is some leakage? An 80/80 test seemed, to me, to be too good to be true. This is a factory new O-360 with ~220 hrs on it now.
My main concern is the trend over time, and in that regard cylinders 1-3 have always been just a bit more hale and hearty than #4 (better cooling on 1-3 during break-in????), and from that standpoint things have not changed. But I am thinking that a "no leakage" result is too good to be true.