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LS3-powered Cessna

Bru

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QA_02.jpg


20080419_QUIET_0008.jpg


http://www.youtube.com/watch?v=rpZYfd0GzuQ&feature=related

What happens when you put a Corvette engine in a Cessna 172?

FIRST, you use 1/2 the fuel, and SECOND, you're not using avgas that is 1/2 again the cost of mogas, a 67% savings. Nor do you add oil each flight or so.

If you have a need for a proven engine, you have to study the "QT430" package, It uses all of the components on and around the GM all aluminum 6.2 LS3 V8 engine. It is the perfect engine at an exceptional price for any airplane but really performs for bigger aircraft. If you need economy of operation and service plus safety, it shines. This is an automotive engine for which the FAA has given an STC Issue Letter outlining the certification basis for installation in the Cessna 172. This 172 is our experimental test aircraft which we use to demonstrate the merits of the installation.

One must realize that using Detroit technology will always satisfy our Planet’s commitment to noise suppression, alternative fuels, global warming, while providing the best operating economics and convenience. They give you a dependable engine, and keep you on the leading edge. It's an accepted fact that the crank/connecting rod engine is here to stay. There may be a better design, but the production is too broad and extensive to change. This LS Series of engines do deliver as they are Performance Engines. QA gives you a universal package that has many more features than others and yet gives you a much better price.

This "QT430" package runs at very low noise levels. It includes everything firewall forward and aft except your mount and cooling system that are unique to your plane. If you would rather use your own propeller rather than the ground adjustable that is in the package, there will be a $2,000 discount.

1. CONVENIENCE & COST – Detroit does assure you of using the most practical, most economical propulsion available, FOR SURE. Parts and service are always local and reasonable. A new and complete crate engine for a few thousand dollars can replace the old engine with 2 technicians in 4 or 5 hours, making an overhaul quick and cheap. You use all of the auto sensors and controls to always operate at peak efficiency where you can have real single power control. One prop rotation for each start, every time.

The "QT430" package is sold with how-to instructions for $24,500 FOB Orlando, with the first 10 (ten) as introductory offers at $19,900.

Here is what you get:

1. GM Crate Engine w/ ignition, injection and most sensors, already checked on test stand.
2. 2:1 helical gear box with fluid and Lycoming hub.
3. Soft rubber drive coupling and fasteners.
4. Flexplate starter ring.
5. Composite prop blades closest to your application.
6. Ground adjustable 2-blade propeller hub (3 and 4 blade are options).
7. Hi-torque GM starter.
8. 2.5” exhaust swivels, flanges, and gaskets.
9. 45 amp alternator, pulley, bracket, and belt. 75, 120, 140 and 160 amp alternators are also available along with a dual setup.
10. Air filter box, filter, and adapter to the throttle body.
11. MAF sensor and connector.
12. ALDL connectors (diagnostic).
13. Serpentine belt, tensioner, and idler.
14. Exhaust manifold oxygen sensors.
15. Electronic throttle lever (accelerator pedal) or vernier throttle w/ electronics.
16. Front engine stand-off mounts and isolated shock mounts (like lord) for the gear box and stand-offs.
17. 2ea 75 psi continuous flow fuel pumps, regulators, regulator AN fittings, check valves, pressure gauge, and in-line filter (GM submersible pump, regulator, and fuel level sender can be substituted for one or both).
18. 6.5” screen, 4 push button, LCD daylite monitor with basic engine parameter display and menu for operating options that will have backup manual throttle. 8.5” screen, other operating options, and a custom display or your options are available.
19. Complete auto electrical harness, needed connector pins, power and ground connectors, and the electrical circuitry/tables needed to rewire the engine.
20. 2 computers (ECU’s).
21. CAD drawings of the LS3/7, gear box, prop and accesories. These are instep/ stp for your design application, and will be forwarded as an Alibre output to your email request.
22. And suggestions covering many aspects of the installation and its use.
 

Bru

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I was up at Oshkosh this weekend and saw a whole bunch of engine builders up there for home-built planes. One was selling a stroker N/A STi engine that made 205 hp for $27,000. They also had some turbo Subie engines for aviation, but also do a whole bunch of stuff for automotive as well. Maxwell propulsion systems was the builder.
 

Ron Vogel

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An automotive engine would have to be highly modified for aviation because of the redudndant systems that have to be there. The power to weight ratio of the engine you see there is kind of stupid. The plane would be unbalanced, and you can't use that power because the airframe is only rated for a particular airspeed and operating altitude.

Yeah, it's neat, but a Subie engine makes a whole lot more sense unless you are building a sport experimental.
 

Ron Vogel

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I'm sure going WOT in the air would cock that thing to the side with all that torque :rofl: Look at the whole plane twist when he starts it up.

I only see a single ignition system on it too. Be fun when the ignition system cuts out mid flight and you can't employ the secondary! That kind of stuff seems overkill, but when your vehicle is able to go from 80 F air to 20 F air in minutes just from climbing things tend to condensate quickly...and it's not like you can just pull over if you have a problem!
 

Bru

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Looks like there's a redundant fuel system, but don't know about ignition. Here's the link to the program:

http://quietaviation.com/programs/qtpower.html

8. SAFETY – Redundancy in this "QT430" package surpasses all other power plants. These LS engines meet strict Quality Control standards because they are assembled by selected technicians of the Performance Build Center. The engine and sensors are untouched. However, external, dual, dry fuel pumps replace the auto submersed one for space, simplicity, duplication, and for other reasons. QA is working to use the GM submerged pumps too. You have excess power with most applications to increase its robustness and carry on after losing one or two cylinders. You can single or dual alternators with outputs from 45 amps to 160 amps, add a cooling fan, include an oil cooler all for safeties sake. Our Odyssey, sealed battery gives well over 1 hour of engine operation by itself.
 
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