REFLECTOR: IO-390

[Grigore Rosu]

Richard,

Hm, it looks like its installation involves some non-standard issues, so it
would probably be safer for me to go with the more standard IO-360 ...  Not
that I'm affraid of new, but I've spent so much time building the airframe,
that I am very anxious to fly now ... the more standard the better.

Thanks alot,
Grigore

On Mon, Mar 17, 2008 at 3:10 PM, Richard J. Gentil <
richard at naples-air-center.com> wrote:

> Grigore,
>
> I have the TMX-390 which was the show piece at Mattituck's venue at Sun 'n
> Fun. I did have Velocity custom modify the intake and exhaust stacks for the
> engine. There was an IO-390-X there on the field at the time so they were
> able to modify the stacks.
>
> Another issue with the TMX-390 was that I had the intake for the throttle
> body facing the prop, which meant that I had to a scoop modification to the
> lower cowl.
>
> Richard
>
> Grigore Rosu wrote:
>
>   I asked Mahlon Russell of Teledyne Mattituck (their tech expert) about
> the IO-390 engine that they have for sale (see http://www.mattituck.com/,
> click on Experimental Engines) for about $32k.  Here is his answer:
>
> " The IO-390 has the same footprint as the 200 HP IO-360-A1B6, except the
> prop governor mounts on the front left half of the crankcase, rather then
> the rear of the accessory housing. If you are considering an angle valve
> Lycoming style engine in the 200HP range, the 390 is really the only way to
> go. As you have already noticed, it is significantly less money to acquire
> and has the additional 10 HP. I can see no reason the 390 wouldn't work for
> you, in every aspect as compared to a 200HP engine, as long as the governor
> location isn't an issue for your cowling/nacelle design.
> "
>
> Any thoughts on this?  Can one just bolt an IO-390 instead of the 200HP
> IO-360?  Can one just use the engine kit provided by the Velocity factory,
> or one needs something else?
>
> Thank you,
> Grigore
>
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