O&VO-360 SER - what kind of engine is this?

[Saville]

What do the Lycoming designations mean when you see:

O&VO-360 SER

Thanks!

[Jesse]

The V is for vertical. It's for a helicopter.

[Saville]

Originally Posted by Jesse

The V is for vertical. It's for a helicopter.

And the "SER".....what does that mean?

I'm assuming that since it says "O" that it's carbed.

[Jesse]

Most likely Ser short for Series. Yes, it would be carb'ed. It would be IVO for injected.

[Steve Barnes]

"0" means opposed.

Steve

[Jesse]

Correct. The O doesn't stand for Carb, but the lack of an I means it's not injected.

http://hhh.gavilan.edu/hspenner/Main...Helicopter.pdf

[David Z]

The O actually means Horizontally Opposed, relating the the cylinder configuration. Other options are V-####, for V engines like V-1650, or R-### for Radial engines. So VO-### means "vertically mounted opposed". Carburetors are assumed unless an "I" specifies fuel injection.

Of course a manufacturer can name an engine anything he wants. The WAM-120 is example of this, as it's not called the TI?-### for Turbocharged, fuel Injected, and I don't know what nomenclature they use for inline. Inline engines are typically European where they don't follow this convention.

[az_gila]

Originally Posted by David Z

......Inline engines are typically European where they don't follow this convention.

...and Lycoming didn't have their naming convention in place when they produced straight-8 engines for some of the exotic cars of the 30's, such as the Cord.
Cord owned Lycoming at the time...

[Saville]

Originally Posted by Jesse

Most likely Ser short for Series. Yes, it would be carb'ed. It would be IVO for injected.

If that's the case, what are they telling you when they say "Series"?

thanks

[Jesse]

For example, an O-360 series would of include the -A1A, -A2A, A1B, -A4M, etc. There are different variations in the same series.