Lycoming O-290-D options

David O wrote:

(Gene Z. Ragan) wrote:

David and all,

Thanks for the good input.

I have rebuilt several engines including performance racing Porsche
engines, but I know that doesn't make me an expert aviation powerplant
mechanic. I did expect it to be an adventure for sure.

Because the engine is an O-290-D, I wasn't aware that ECI had new
cyclinders for it. I will yank the sad jug and see what is going on
inside.

I expect whatever I do to be expensive, I was just trying to deterine
what to do with the 300 lbs of metal bolted to the plane right now.
Perhaps I can find a midtime 320 and let an excited 290 owner buy this
one for parts.

Gene

Gene,

ECI replaced much of their "Classic Cast" cylinder line with their new
Titan series. I'm believe that they continue to manufacture Classic
Cast cylinders for the types not replaced by the Titan series, but I'm
not certain. I agree that the O-320 route might be better for you.

David O -- http://www.AirplaneZone.com

If I'm not mistaken, the O-290 has a solid crank.
Not hollow like the O-320?

Richard

Richard Lamb wrote:


If I'm not mistaken, the O-290 has a solid crank.
Not hollow like the O-320?

Richard

I'm pretty sure that all Lyc O-235, O-290, and O-320 engines have
hollow crankshafts. Some Lyc O-360 engines have solid cranks. The
original "corrosion pits" AD proposal included all O-235, O-290, and
O-320 engines plus the O-360 engines with hollow cranks. After
lobbying by AOPA and others, the scope of the AD was reduced to
include fewer engine models. Lycoming's crankshaft inspection SB
(505, 505A, 505B) never included O-235 or O-290 engines. Lycoming's
protective coating SB (530, 530A) includes all O-235, O-290, and O-320
engines plus the O-360 engines with hollow cranks.

David O -- http://www.AirplaneZone.com