Will an IO-360 work with what I have?

[Flying Canuck]

I'm starting to seriously search for an engine for my 9A. I bought the dynafocal Type I mount and my finish kit was ordered for a parallel valve IO-320 with vertical induction. The cowling is the O-360 version. As I'm researching my options, I got to wondering about an IO-360. I know that we aren't supposed to use the IO-360 on the 9, I don't want to debate that here - there are plenty of discussions around about that. What I want to know is can I install an IO-360 with my mount and cowling? It seems to be difficult to determine which engine models use the type I mount.

Just a cursory look at an unnamed classified site suggests that the easiest engine to find may be an O-320-E2x. I know that this is 150HP, but it may prove to be a decent base for an EFII installation. Adding the IO-360 to the mix might net me a few more options.

[Vern]

There are angle valve and parallel valve IO-360's . Which are you considering?
RV-9s fly just fine with the 180-200 hp parallel valve engines. The angle valves are heavier.

Lycoming has a chart of the features of its different engines. Perhaps Dr Google can find it?

[Raymo]

The dynafocal 1 mount is probably the most common and will work on either the O-320 or O-360 designed for that mount (some older 320 use conical). Dynafocal 2 mounts were made, from what I've read, for the dual engine planes that needed to put the prop further out in front of the engine and thus have the mount designed for that purpose.

The 360 likely weighs a little more so you'll want to consider W&B in your planning.

[Flying Canuck]

Originally Posted by Vern

There are angle valve and parallel valve IO-360's . Which are you considering?
RV-9s fly just fine with the 180-200 hp parallel valve engines. The angle valves are heavier.

Lycoming has a chart of the features of its different engines. Perhaps Dr Google can find it?

I know I had to specify parallel or angle valve when I ordered the finish kit. I chose parallel. Not sure what specific parts that implies in the finish kit. I am limiting my search to parallel. I didn't know about the weight difference, so that helps with that decision.

I do recall once upon a time seeing a chart for an engine series on Lycoming's site. They've changed the site significantly since then and all I can find there is a list of models with nothing more than a single picture for each variant. I (humbly) consider myself a Google-foo master, but this one is stumping me. The best I can find is the simple list from Wikipedia.

[rv7charlie]

Are you looking at the used market, or buying new/rebuilt? If new/rebuilt, then you should be able to tell the vendor Van's model # of the IO-320 that they sell for the -9, and the vendor would almost certainly be able to match the intake (sump) and governor configuration, in an updraft IO-360 parallel valve engine.

edit: The dyna-1 mount will fit 320s and 360s; no problem. The early kits (-4s, -6s) had slightly shorter mounts for the slightly heavier 360, but IIRC, current production for the -7 (same fuselage as the -9) uses the same mount. Easy enough to get a definitive answer from Van's.

[airguy]

From the W&B aspect, I installed the IO360 (parallel valve) in my 9A using the James extended cowl, WW200RV prop and Sabre spacer with Vetterman crossover exhaust. I dealt with the extra weight up front by moving the battery (PC680) aft of the baggage compartment bulkhead and putting the strobe power pack, transponder, and ELT on a mounting plate just aft of the elevator autopilot servo, and that compensated nicely for the extra iron up front. I have no issues loading and flying my airplane throughout the entire envelope. I also have dual ADHRS in the absolute aft of the airplane, just forward of the tailcone.

We have to have all those things to go flying - but we get to choose where they live in the airplane. Move 'em around as needed. Just take Vans base model, figure in the changes you would like to make and how that adds weight/moment, and start moving components to compensate.

[mahlon_r]

Originally Posted by Flying Canuck

I know I had to specify parallel or angle valve when I ordered the finish kit. I chose parallel. Not sure what specific parts that implies in the finish kit. I am limiting my search to parallel. I didn't know about the weight difference, so that helps with that decision.

I do recall once upon a time seeing a chart for an engine series on Lycoming's site. They've changed the site significantly since then and all I can find there is a list of models with nothing more than a single picture for each variant. I (humbly) consider myself a Google-foo master, but this one is stumping me. The best I can find is the simple list from Wikipedia.

http://www.lycoming.com/contact/know...e/publications
The certified engine publication as well as owners manuals are listed there. Between the two you can find out weights, dimensions features etc.

Good Luck,
Mahlon

[Flying Canuck]

Originally Posted by mahlon_r

http://www.lycoming.com/contact/know...e/publications
The certified engine publication as well as owners manuals are listed there. Between the two you can find out weights, dimensions features etc.

There it is! Special Service Publication SSP-110-1 Certificated Engine List.

I'm meeting my local engine guy tomorrow, he figures he's got everything he needs to build me a suitable engine. Pretty sure I'll be going with an IO-320 (maybe a conversion from an O-320). Less weight, lower fuel burn. I can use the extra weight savings to fit a C/S prop, but that's another endless debate...

Thanks for finding this link for me.

Claude

[n82rb]

the only engine i can think of that used the d2 mount was the IO-320-B1A on the PA-30/39.

bob burns
RV-4 N82RB

[mahlon_r]

And the IO-320-C1a from the twin Comanche as well.
Good Luck,
Mahlon