HIO-360 For me?

smokyray · #1 10-26-2012, 06:09 PM

Guys,
Have my eye on a like new HIO-360 removed from an Enstrom Helicopter in lieu of a Turbine. Is the HIO the same dimensions as an Angle Valve A1B6? Think I could shoehorn it into my RV6 cowl? Bigger than a parallel valve 360 but is mounted level in the Enstrom just like an airplane.
My thoughts are bolting it right up to my current conical mount in place of the 0320 ND, plumb a intake scat from the stock intake to the rear induction, new baffles and oil cooler. Should work, in theory. New Catto prop for higher HP (solid crank) Anybody ever done it?
Thoughts?

V/R
Smokey

Mel · #2 10-26-2012, 06:34 PM

Most of the helicopter engines I've dealt with only develop max power at a higher rpm.

flyeyes · #3 10-26-2012, 06:39 PM

Smokey, I almost did this exact thing as I hangar next to a helicopter service that runs an A model Enstrom to TBO every couple of years. They typically were running perfectly when unbolted and swapped for a reman. Found a rebuilt C1D6 locally for a good price though.

There were a few issues IIRC, but nothing unsolvable. The exhaust, baffling, and intake are wrong, of course.

The engine uses the problematic "Siamese" magneto, but that's not an issue if you switch to an electronic ignition.

I have a vague memory of some other issue with the accessory case, but don't remember exactly. I do remember deciding it was possible on an rv-8

It may have a solid crank and no governer pad IIRC

LifeofReiley · #4 10-26-2012, 06:42 PM

Got a Buddy that works on the Enstrom Helos pretty much everyday... has had a lot off fuel servo/fuel metering issues with this engine. I remember one he sent out 2-3 times for repair before it would function properly. That helo was almost band from the shop!

mannanj · #5 10-26-2012, 06:43 PM

Might glean some info from preview plans and instructions. There is a pretty complete list of Lyc. models with the different dash numbers with their differences in there. As you know there's a 40lb. weight penalty with the angle valve engines.

IIRC some of the HIO's turned a couple or three hundred rpms faster to achieve more hp. If this is one of those, coupled with the right prop it would sure "nuff" make a HOSS!

If you go with it, look into the EFII Dual Redundant Electronic Ignition. I got rid of my "siamese" mag completely and am a big fan of Robert Paisley's electronic system.

flyeyes · #6 10-26-2012, 06:55 PM

Quote:

Originally Posted by mannanj

IIRC some of the HIO's turned a couple or three hundred rpms faster to achieve more hp. If this is one of those, coupled with the right prop it would sure "nuff" make a HOSS!

.

It's been a while, so I might be off a little, but that engine in the helicopter runs either 2900 or 2950 RPM from takeoff to touchdown. Rated HP is I think 225@2900RPM

bifft · #7 10-26-2012, 09:04 PM

Have an HO-360 in a Starduster Too, according to the dataplate it is 190HP @ 3000RPM. It also has straight mounts instead of conical or dynafocal.

g zero · #8 10-27-2012, 06:43 AM

Had a HIO-360C1A out of an Enstrom on my Skybolt , 205hp ,8.7:1 ,RSA 5 fuel Inj , 2 Bendix Mags . The intake can easily be machined to move the the servo to the front. The intake is also a "poor mans" cold air sump " .

hohocc · #9 10-27-2012, 11:35 AM

Smokey,
Suspect this may be worth looking at...
http://www.vansairforce.com/communit...ad.php?t=80458
Craig

smokyray · #10 10-27-2012, 02:22 PM

Thanks for the inputs guys, should be fun! I've bolted many engines into RVs, shoehorning an Angle Valve into the RVX will be interesting!
Letcha know how it goes

V/R
Smokey