First off (for those who have followed my high oil temp saga), the new cylinders are doing fine, we have about 5 hours on them and during the first couple of hours the oil temperature was much cooler than before, even on a very hot day. I'm convinced now that blowby was the reason for the high oil temps.
I do have a couple of questions for the experts here :-) 1) Is it normal for fuel to slowly drain from the header tank to the wing tanks over a period of a few days? It doesn't overflow, since the wing tanks are ultimately vented to the header anyway. 2) This engine has an rpm range at around 1800-2000 where it acts like the prop is slightly unbalanced, but at other speeds it is smooth. The engine is a C-90 with a 70-48 (I'g guessing on the 70, I don't have the book handy) prop that has been re-pitched to 70-50. Maybe this has something to do with it, I don't know. Does anyone else have this resonant vibration at this RPM range? When I had the prop off, I checked the balance in an amateurish way, and it seemed perfect, certainly waaay better than the prop on my C-65, which doesn't have any obvious resonant shaking at any speed. Anyhow, just wondered if this is "normal". ------------------------------- [EMAIL PROTECTED] Say NO to useless over-quoting -------------------------------
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