Just got engines for my T310-Q (TSIO 520-B). I had light Crankcases and non
VAR Crankshafts, so I couldn't get any core credit for either. So overhaul
was not an option. Called AirPower and found that there are no new TSIO
520-B's available. So I opted for factory remans. They dont care if the
cases are light or the cranks are non VAR. $31,000 each, included the
Turbo's. I was about 150 hrs over TBO and have replaced 5 cylinders in the
800 hrs I have owned the airplane. I had 2 first run rebuilt Milleniums
that never really had good compressions, so we didn't do that any more. The
3 new continentals are still on the old engines and still have compressions
over 75. That's just my experience your milage may vary! Call a couple of
the places and ask you may not get core credit for the cracked case. Good
Luck


Mark Manes
N28409

"f" wrote in message
...
Today was not a good day for the Baron. While replacing a cylinder I
found a crack (confirmed with Dye Pent) off the #5 cylinder leading up
towards the case halves.

The engine has 2750 Hr since new and about 1000 Hr since a TW Smith
overhaul. The case is repairable, but it seems like a waste to not do
the overhaul.

The question is has anyone recently purchased a Factory New engine? The
cost is about $4K more but the parts are not a mix of old parts.

The engine is an IO-470L.

Any thoughts and opinions will be a great help.

Paul