"Dude" wrote in message
...
LMAO! Good one!



"Gene Kearns" wrote in message
...
On Sun, 6 Jun 2004 20:59:29 -0400, "Charles Talleyrand"
wrote:


" jls" wrote in message
...


Cessna 150's came from the factory with 100 HP Continental O-200's.
Majoring the engine costs 5 to 10 thousand, sometimes more.


How does one overhaul an O-200 for "5 to 10 thousand"? Five
thousand would be beyond believable. Ten thousand would
be cheaper than any price I've seen.


That 5K-6.5K might be about right just for the parts on a
no-surprises, just-fix it overhaul. A poor choice, but one often made
for a for-sale aircraft..... "A real cherry," 10 hrs TSMO.....

Chapter Two is a log book notation of 110 hrs TSMO, 10 hrs since top
overhaul.....

IMHO, overhauled Continental O-200 cylinders don't last, although that's
probably not what happened here. If you overhaul Continental cylinders
they should have bushings installed in the rocker shaft bosses, they should
have new seats and certainly new guides. And probably new springs. Most
A&P's knowledgeable about them will tell you they will last 500 hours max.
In the meantime, worry about cracks, problems in the rocker box, and on and
on.

For the money Milleniums are the way to go. Unlike Continentals, the
Superior exhaust guides, a big problem with all the small Continentals, are
surrounded by the aluminum castings in the heads for better dissipation of
heat. And you're not stuck with the AD requiring you to retard the
ignition timing from 28 to 24 deg. btdc, and losing horsepower. While
Continental cylinders have no choke, Milleniums do --- .002" taper to
account for heat expansion near the top of the cylinder. Then Millenium
valves and guides are set up to take the punishment which causes Continental
valves and guides to wear unevenly, get hot, foul with carbon, and stick.
Milleniums come from the factory with rockershaft bushings installed, while
new Continental bosses are aluminum which quickly wear and get sloppy.

I could go on and on, although certainly not an authority. If you want to
know more read up at Sacramento Sky Ranch's website, read the literature on
Millenium cylinders, or just do some googling on O-200 cylinders, which by
the way are the same for C-75's, C-85's, and O-300's, except for a few
variations with springs, valves, and guides.

We just installed some new Milleniums at around $850 per unit. They came
in big tall foam-filled boxes with pistons, rings, rockershafts, piston
pins, gaskets, yep, just about everything you need for a top except the
tools, rocker arms, and elbow grease. Noted with great curiosity were the
blue inscriptions on the valves and pistons --- the words "Italy" and
"Brazil" respectively. Do you suppose these parts were bound to those
countries and got sidetracked?