Lycoming 290g Questions

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