On Sat, 04 Dec 2004 18:01:41 -0800, Ed Sullivan
wrote:

On 3 Dec 2004 19:52:31 -0800, (Mike) wrote:

Hello All,

An "exhaustive" internet search regarding the 0-290G has left me with
several unanswered questions. I understand that the EAA published a
conversion guide years back that would be very helpful. In the mean
time, I am hoping some of you out there can answer any of the
following questions:

1) Which cylinders may be used (i.e. bolt-on) on the O-290G? I
understand that the stock cylinders, other 0-290 cylinders (D, D2
etc), and 0-435 may be bolted on and used.

2) Which pistons may be used (in native/unmodified form)?

3) Which cranks may be used (in native/unmodified form)? I understand
that "any" 0-320 crank may be installed without modification.

4) What "slight" modifications can be used to up the HP to 150hp?

5) Is the "converted" 0-290G still heavier than an 0-320? Why?

6) Any known sources for 0-290 parts?

Thanks for any help,

Mike

I saw an ad, I think in the latest Sport Aviation wherein someone
wrote a new manual on the conversion. Price was $40.

EBS

H Mike I can't answer any of your questions but as an owner of an
0-290 D my advice is. These are unsupported engines parts are hard to
find and brutally expensive. If you need cylinders and a crankshaft
it's probably cheaper to buy an 0-320. If you want 150hp you should
buy an 0-320. If you do all the work needed to make it airworthy it
will still be worth next to nothing