My RV6A is 32 years old and has a 42yo O-360A1F6D out of a Cardinal. It has ~2300h TT, 74+ compressions, low oil consumption, and borescope looks ok. It has 2 rear cyls that are @ 500h or so. Besides that, I don't see that it has ever been opened up. There is a little lead on the heads near the valves, but I believe that is due to not running hot enough to scavenge the lead. It runs really cool even during the 90+ degree Missouri summer. It is able to propel my 6A to 161kts @ 3000' during the summer @ 2600RPM with a Sensenich wooden cruise prop (71"dia 83" pitch), so I THINK it makes ok power. It's time to change the oil and cut open the filter, but before I do...
When doing my first condition, I found out that my engine has an oil pump AD from 1996 that was not logged in the book. The AD from '81 replaced the sintered metal gear, but left the aluminum gear... hence '96 AD. Anyway, it's grounded for the aluminum gear AD. I was given a magnet on a stick and some instructions on how to determine if the AD was done without pulling the housing, but the instructions don't take the A1F6D accessory housing into account. This engine obviously has a counterweighted crank that reduces prop restrictions when I go to a CS prop. I will also likely switch it to a single mag and SDS ignition if I keep it.
I also have an '04 O-360A1A 1700htt 600STOH with new cyls and pistons. The logs say it was owned by Bob Axsom for most of its life. This one has Airflow Performance FI, so I'll have to upgrade the fuel system to high pressure and find an ignition system for it, since I don't have the mags.
I got a great deal on this plane knowing it wasn't perfect and would need some work. I was ok with that because I wanted to make it exactly what I wanted.
Given the options, what would you do?
1.Throw an oil pump in the A1F6D and keep an eye on things
2.Rebuild the A1F6D while I have it apart to replace the oil pump
3.Install the A1A. A Cardinal owner needs the core.
4.Rebuild and install the A1A
5.Something else
Thanks for your time.
When doing my first condition, I found out that my engine has an oil pump AD from 1996 that was not logged in the book. The AD from '81 replaced the sintered metal gear, but left the aluminum gear... hence '96 AD. Anyway, it's grounded for the aluminum gear AD. I was given a magnet on a stick and some instructions on how to determine if the AD was done without pulling the housing, but the instructions don't take the A1F6D accessory housing into account. This engine obviously has a counterweighted crank that reduces prop restrictions when I go to a CS prop. I will also likely switch it to a single mag and SDS ignition if I keep it.
I also have an '04 O-360A1A 1700htt 600STOH with new cyls and pistons. The logs say it was owned by Bob Axsom for most of its life. This one has Airflow Performance FI, so I'll have to upgrade the fuel system to high pressure and find an ignition system for it, since I don't have the mags.
I got a great deal on this plane knowing it wasn't perfect and would need some work. I was ok with that because I wanted to make it exactly what I wanted.
Given the options, what would you do?
1.Throw an oil pump in the A1F6D and keep an eye on things
2.Rebuild the A1F6D while I have it apart to replace the oil pump
3.Install the A1A. A Cardinal owner needs the core.
4.Rebuild and install the A1A
5.Something else
Thanks for your time.