Posted: Tue Nov 28, 2006 21:05
Thanks Guys, these are all really good ideas.
What I had planned to do was just run it up to high power on the ground and see if anything happens. Unfortunately I don't have it at a nice big airport, just on my farm with hazards at both ends and not a lot of places to set down if something happens on takeoff. Not the best conditions.
I have a borescope so I'll take a look at the cyl walls but I'm optimistic because it never did make any unusual sounds, just purred as per usual. I do have an AI friend nearby who could look at it. In fact he has my borescope now so I should be able to get him to look at it. I know roughly what to look for but would feel better using his skills.
I presume that scored walls would be from rings since the pistons and pin plugs are not hard enough to score steel?
I changed the oil and cleaned the screen just after the no press problem and found no metal, just some carbon flakes - so that is a good sign. I changed the oil because I thought the straight 50W was too thick and was causing the problem. I guess it would be a good idea to check the screen again after checking the cyl walls and giving it a good high power runup.
Unfortunately I don't have a base oil analysis yet because I just have only about 7 hrs on it since I got it with fresh oil. I have three or four unused analysis kits left over from the Navion which I will use.
Nobody said anything about crankshaft clearance? Shouldn't this help determine if there is any bearing problem? Since it only has 120 hrs since major I would think that a bit of abnormal bearing shouldn't be a problem as long as none have rotated.
Again, thanks for all the info. If you guys hadn't told me about A65 oil pumps I would still be thrashing around in the dark. I was completely convinced that this was a gage problem because it happened all at once.
What I had planned to do was just run it up to high power on the ground and see if anything happens. Unfortunately I don't have it at a nice big airport, just on my farm with hazards at both ends and not a lot of places to set down if something happens on takeoff. Not the best conditions.
I have a borescope so I'll take a look at the cyl walls but I'm optimistic because it never did make any unusual sounds, just purred as per usual. I do have an AI friend nearby who could look at it. In fact he has my borescope now so I should be able to get him to look at it. I know roughly what to look for but would feel better using his skills.
I presume that scored walls would be from rings since the pistons and pin plugs are not hard enough to score steel?
I changed the oil and cleaned the screen just after the no press problem and found no metal, just some carbon flakes - so that is a good sign. I changed the oil because I thought the straight 50W was too thick and was causing the problem. I guess it would be a good idea to check the screen again after checking the cyl walls and giving it a good high power runup.
Unfortunately I don't have a base oil analysis yet because I just have only about 7 hrs on it since I got it with fresh oil. I have three or four unused analysis kits left over from the Navion which I will use.
Nobody said anything about crankshaft clearance? Shouldn't this help determine if there is any bearing problem? Since it only has 120 hrs since major I would think that a bit of abnormal bearing shouldn't be a problem as long as none have rotated.
Again, thanks for all the info. If you guys hadn't told me about A65 oil pumps I would still be thrashing around in the dark. I was completely convinced that this was a gage problem because it happened all at once.