Rotax 912 iS

[Av8r3400]

Here's the official press release.

[Esser]

Exciting. Too bad that they are keeping it at 100hp. With FI you think they could haev squeezed out some more HP

[Dorsal]

cool, a couple years late for me but who knows

[Esser]

Since it is computer controlled injection I give it 6 months before someone reprograms it to make more power. Also I wonder if you can still do the 914 conversion to it. And the price....

[Av8r3400]

Esser - The 914 is actually a turbo UL (80 hp) motor.

I would imagine the limit to 100 hp was for longevity and liability. I would think that an injected 914 and 912UL will not be far behind.

Steve Henry (dead stick takeoff guy) has a new Highlander with a heavily modified, injected, turbo, 912S. Supposedly making over 130 hp. We'll have to watch and see how that thing lasts for him.

(The candle that burns twice as bright...)

[Monocock]

Does anybody know if it would fit the same engine mount as I have for my 912ULS?

[mr bill]

Can the system be retrofitted to existing 912ULS engines and if so what will be the cost.

[DBVZ]

I would expect a retro to an older model would be very difficult. Like the whole top end, even assuming they used the identical block. Here is an interesting excerpt:

"The development of a 4-stroke, 4-cylinder 100 hp aircraft engine with a redundant electronic fuel injection system is a first in the industry; it makes it ideal for all kinds of light sport aircraft, generating increased opportunities in general aviation market," said Gerd Ohrnberger, vice-president and general manager, Powertrain division.

After testing the new Rotax 912 iS engine, Tine Tomazic, engineer and pilot for Pipistrel Aircraft, said: "The injection system ensures the best fuel and air mixture on each cylinder at every possible altitude while delivering the same 100 hp as the Rotax 912 ULS engine, therefore producing fewer emissions. Based on these facts, I would say that the Rotax 912iS engine is a powerful, economic and more fuel-efficient engine."

[szicree]

I must be missing something. Why would the top end need to be swapped?

[Esser]

Well maybe not swapped but probably. You would have to drill holes into your cylinder at precise angles for your injectors to go into. Probably easier to swap out your top end.