I'm drinking EcoTech Kool-Aide

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Daddy Dave
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I'm drinking EcoTech Kool-Aide

Post by Daddy Dave »

So, I've been following all the Eco-Tech banter and R & D ever since Chuck Rackley started it a couple of years ago. Dave Hartz has proved beyond any doubt that LS technology is the future and Chuck has broken ice in the arena of smaller displacement packages.

A good friend of mine, George Thomas of Land-O-Lakes, FL was a 54 hp Briggs and Stratton customer of Chuck's and wanted to cut more grass, so he ordered a Eco-Tech package to go on his 16' Marty Bray // Lazer. George uses his airboat mostly to saltwater fish the Nature Coast and to stick a frog or two.

Yesterday, George brought his rig out to my place in Odessa for a little demo. We tinkered some with the accessory wiring system and added a tripple passenger seat to his rigging -- origionally a single rear operator set-up. So, after the work was done I told George to drop it on the ground in my front yard and "let's see". He did and pointed at the stick and said "have at it."

Well Folks, I got comfortable with the controls and mashed the gas. It took off like it was made for the ground. Granted, the grass was short and had recently been frost bit. But, this is a 16' hull. No problems. Ran all over the 80 acre pasture. So I reluctantly drove it back to George and he looked like a kid in a candy store. He had never tried it on dry ground. I said "get in and we'll give it the real test" and he did. We are both about 240. He loaded up, I mashed the gas again -- and off we slithered, no problem. -

Bone Dry, no dew, two big men in a 16' hull. Georges motor is the 1.9, I think. Century built belt drive and 70" Water Walker Signature prop. The simplest Eco-Tech there is. I was // am VERY impressed.
A I R B O A T

Anytime It Runs, Break Out Another Thousand

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Re: I'm drinking EcoTech Kool-Aide

Post by SWAMPHUNTER45 »

I had a 1.4 in a car and it was nothing short of amazing. If he plans on bringing it back over shoot me a PM Dave I would really like to see it I am 20 min. North of you guys. If the big Eco is pushing a 16 the 1.4 should be ideal on an 11 to 13 hull.

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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

I am almost finished with a ecotech build. I am putting a 2013 2.0L new generation ecotech on a 12 foot Marty Bray hull. This will also be the first ecotech with a direct fit gearbox thanks to a new player in the airboating game that doesn't make any excuses on why things cant be done ( thread on this will be coming soon ). I am also going to leave the catalytic convertor on to keep this boat emissions legal ( another problem that I believe will cause problems for the airboating community in the future).
gm-2-0l-turbo-i4-ltg-2.jpg


New 2.0L Turbo Engine Gives the 2013 Chevrolet Malibu Enhanced Performance and Refinement

Twin-scroll turbocharger and new combustion system optimize power and efficiency

2012-09-20


DETROIT – A new, direct-injected Ecotec 2.0L turbocharged engine is available in the 2013 Chevrolet Malibu. It is rated at 259 horsepower (193 kW), making it one of the most power-dense automotive engines in the industry.

A twin-scroll turbocharger generates up to 20 pounds of boost, helping the engine optimize power delivery across the rpm band. It also produces a broad and robust torque curve, delivering 90 percent of the peak 260 lb.-ft. of torque (353 Nm) from 1,500 rpm to 5,800 rpm – giving the Malibu Turbo a great feeling of power on demand.

“With the twin-scroll turbo, there is basically no turbo lag and the feeling of power is instantaneous and satisfying,” said Mike Anderson, global chief engineer for Ecotec engines. “Better still, it is on-demand power, with the fuel efficiency of a small-displacement engine in most driving conditions.”

This added performance comes with greater refinement, as the enhanced torque reduces downshifts and helps quiet the buzz sometimes found in four-cylinder engines.

The 2.0T is based on the all-new Ecotec engine family – including the new 2.5L engine that also is new in the 2013 Malibu – and builds on the advanced-technology heritage of previous GM turbo engines with features that enhance efficiency, durability and refinement. Increased efficiency in all of the new Ecotec engines is achieved in part through lower engine friction, which was reduced by up to 16 percent using new technologies such as a variable-displacement oil pump.

GM proprietary computational fluid dynamics (CFD) analysis techniques were used to develop an all-new combustion system with a higher compression ratio, which also helped boost efficiency. Electronically controlled supporting components, including the wastegate and bypass, also help optimize performance and efficiency.

The new 2.0T engine features durability and technological features familiar in premium engines, including low-friction hydraulic roller-finger valve operation and an electronic throttle. A hydraulic tensioner keeps the timing chain adjusted for life, and extended-life spark plugs deliver 100,000 miles (160,000 km) of service. Additional engine features include:
•A precision sand-cast engine block with cast-in-place iron liners
•Forged steel crankshaft
•Pistons with jet-spray cooling
•Modular balance shaft system in the oil pan
•Inverted-tooth chain drive systems
•Rotocast aluminum cylinder head with sodium-filled exhaust valves
•Dual Overhead Camshaft (DOHC) with continuously variable valve timing
•Direct injection with cam-driven high-pressure fuel pump
•Two-stage variable-displacement oil pump
•Air-to-air intercooling system.

Engine block and rotating assembly: The sand-cast cylinder block provides excellent structural support and incorporates structural changes shared among the new Ecotec family that enable greater control of noise and vibration. Tough iron main bearing cap inserts are used on the block to locate the steel crankshaft with reduced noise and vibration. Refinements to the oil-distribution system enable improved oil flow throughout the engine, as well.

The forged steel crankshaft is strong and supports the high load of a turbocharged engine – while also contributing to high-rpm smoothness. It is complemented by strong connecting rods and aluminum pistons that are designed for the performance parameters of turbocharging. Piston jet-spray cooling reduces engine temperatures and friction by drenching the bottoms of the pistons with engine oil at higher engine speeds.

Greater engine smoothness comes from the modular balance shaft system, which is mounted in the oil pan. The design, which is part of the design changes with the new Ecotec family, minimizes the drive chain length and “buries” the system deep inside the engine to help reduce noise.

Inverted-tooth chain drives: The balance shaft and camshaft drive systems use a premium, inverted-tooth design that is significantly quieter than a roller-type chain. As its name implies, an inverted-tooth chain has teeth on its links – two-pin rolling pivot joints – that essentially wrap around the gear sprocket to take up virtually all the tension. This allows for smoother meshing of the chain links to the sprocket teeth, which is the cause of most noise in chain drive systems. The chain-to-sprocket tooth impact is greatly reduced with the inverted-tooth design (also known as a silent chain drive), which virtually eliminates noise and enhances durability.

Rotocast aluminum cylinder head with sodium-filled exhaust valves: The 2.0T’s A356T6 aluminum cylinder head is cast using a Rotocast process – similar to the heads on the supercharged Corvette ZR1’s engine – for high strength, reduced machining and improved port flow. The head is also designed specifically for direct injection, with unique injector mounting locations below the ports and port and combustion chamber designs optimized for direct injection and high boost pressure.

The head uses stainless steel intake valves that are nitrided for improved durability and undercut to improve flow and reduce weight. The exhaust valves have sodium-filled stems that promote valve cooling. At normal engine operating temperatures, the sodium inside the valve stem becomes liquid. The liquid sodium promotes heat transfer away from the valve face and helps maintain a lower, more uniform valve temperature. The result is reduced valve guide seat wear and consistent valve seating.

With performance the priority for this engine, the exhaust manifold is made of cast stainless steel to enable approximately 1,800-degree F (980 degrees C) turbine inlet temperatures with a dual-scroll manifold. It is extremely durable and delivers exceptional airflow.

DOHC with continuously variable valve timing: Continuously variable valve timing optimizes the engine’s turbocharging system by adjusting valve timing at lower rpm for improved turbo response and greater torque delivery.

Cam phasing changes the timing of valve operation as conditions such as engine load and speed vary. It allows an outstanding balance of smooth torque delivery over a broad rpm range, high specific output and good specific fuel consumption. Cam phasing also provides another effective tool for controlling exhaust emissions. Because it manages valve overlap at optimum levels, it eliminates the need for a separate exhaust gas recirculation (EGR) system.

Direct injection: Direct injection moves the point where fuel feeds into an engine closer to the point where it ignites, enabling greater combustion control. Because the ports are not used to mix the fuel and air, the airflow is increased, resulting in improved efficiency and power. The evaporation of the fuel in the cylinder cools the air-fuel mixture to a lower temperature than conventional port injection, which allows a compression ratio of 9.5:1. Direct injection also reduces emissions, particularly cold-start emissions, by about 25 percent.

Cam-driven high-pressure fuel pump: A high-pressure, camshaft-driven pump provides the fuel pressure required for the direct injection system. The engine-mounted fuel pump is augmented by a conventional electrically operated supply pump in the fuel tank. The fuel delivery system features a high-pressure stainless steel feed line and a pressure-regulated fuel rail without a conventional fuel return line from the engine to the tank. Fuel pressure varies from about 750 psi at idle to 2,250 psi at wide-open throttle.

Two-stage variable-displacement oil pump: The variable-flow oiling system contributes to greater fuel efficiency, by matching the oil supply to the engine load. Rather than the speed-dependent output of a conventional, fixed-displacement pump, the engine’s variable-flow pump – which is driven off the balance-shaft module – changes its capacity based on the engine’s demand for oil. This prevents wasting energy to pump oil that is not required for proper engine operation.

Twin-scroll turbocharger and air-to-air intercooling system: The turbocharger system’s twin-scroll design is used to increase power. Each scroll on the turbine is fed by a separate exhaust passage – one from cylinders one and four, the other from cylinders two and three – to virtually eliminate turbo lag at low engine speeds.

Because direct injection cools the intake process compared to port injection, the 2.0T is designed with a relatively higher compression ratio of 9.5:1, compared with a conventional port-injected turbo engine. This enables higher boost for greater power and fuel efficiency.

An intake charge cooler enhances the power-increasing benefits of the turbocharging system. The air-to-air intercooler draws fresh air through a heat exchanger – much like a radiator – to reduce the temperature of compressed air that’s forced through the intake system by the turbocharger. Inlet temperature is reduced as much as 120 degrees C (250 F). Cooler air is denser, which means more oxygen is packed in the cylinders and available to burn fuel, consequently generating greater power.

With a simple retune we will get around 310 HP from this package. Should be a very fun boat to drive

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Re: I'm drinking EcoTech Kool-Aide

Post by fl cracker »

Iv always been impressed with that set up. The fella that has the deck over has a video on YouTube of the boat with 3 people. It stop on the side of the ridge half way up and then takes off again. That's saying something for a 4 banger on a poly deck over. I don't know if my 540 will do that but I will try next time I'm out there!
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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

I have a video of that same boat with 8 full grown men riding the green grass at polluted waters. His boat weighs 1700 pounds.

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Re: I'm drinking EcoTech Kool-Aide

Post by chuckitt@earthlink.net »

The engine on George Boat is a 2012 1.8L Chevy Sonic and the drive unit is a Century Eco-Drive 2 to 1 belt. The Water Walker 70 inch 2 blade Signature is the same prop I would put on a 220 GPU. This engine may be producing 150 to 160 HP. A weight savings of more than 150 lbs over the GPU.
I am waiting for George to let me know what his fuel use is.
Thanks, Chuck

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Re: I'm drinking EcoTech Kool-Aide

Post by br,lc,LA »

I drank the Kool-Aid years ago! And sank it the second day on the water... I finally had a weekend off of work and thanks to Chuck I got the wiring diagrams I needed to spend the time chasing the problem. After a year off the water I am almost ready after fixing 3 broken wires today. Now to rewrap the wiring, new steering cable, and a change of fluids.

A few things to note...

1. ECU survived being sunk in 20' of water for a few hours
2. Engine undamaged... turbo working good
3. I replaced a few components(Aeroforce gauge, throttle body, MAF, and Fuel Control Module), but I think the main problem I had was a few broken wires... no way of knowing completely now... but it runs

http://youtu.be/XL4o70bUE-s
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1.4L GM Ecotec - BNR GTX250 Turbo
2:1 Century Ecotec Drive
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"Nothin' as Fine as Hearing a Turbo Whine"

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Re: I'm drinking EcoTech Kool-Aide

Post by chuckitt@earthlink.net »

Good to hear you got time to work on it. Let me know how good it runs.
Thanks, Chuck

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Re: I'm drinking EcoTech Kool-Aide

Post by Joe863 »

I think the Eco Tech motors are really going to take off,I love it.

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JB550
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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

Bump

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DynaMarine
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Post by DynaMarine »

We got the 2 ecotech motors in a week ago and will be using the laser scanner to pull the bolt pattern and flexpkate position off these motors. Once we have that info we'll drop it into our gearbox CAD model and begin making some "tweaks" to the existing Ballistic gearbox in order to make them direct bolt up gearboxes with compatible soft drives. Should be a cool project and make the Ecotech swap that much easier.
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Re: I'm drinking EcoTech Kool-Aide

Post by chuckitt@earthlink.net »

Hey Shane, we already have another 2013 Gen 2 LTG engine like JB550's. So when you get finished with Jeff's please make one with the 2.3 to one ratio.
Thanks, Chuck

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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

MILSAR wrote:We got the 2 ecotech motors in a week ago and will be using the laser scanner to pull the bolt pattern and flexpkate position off these motors. Once we have that info we'll drop it into our gearbox CAD model and begin making some "tweaks" to the existing Ballistic gearbox in order to make them direct bolt up gearboxes with compatible soft drives. Should be a cool project and make the Ecotech swap that much easier.
And here I have been doing such a good job keeping quiet about this. Lol. Guess the cats out of the bag now.

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Re: I'm drinking EcoTech Kool-Aide

Post by DynaMarine »

Jeff you'll have the first so nobody can take that from ya LOL
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JB550
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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

Shane I have been planning to do a real nice thread about this when I got the motor and box back. I have met with a lot of difficulty due to the fact that this motor is so new. Thank you for all you are doing. I believe that now that you have stepped up and built direct fit gear boxes for the ecotechs that it will start a lot of people wanting to go this route. You are a breath of fresh air in an industry that resists any change. My friend Russ just told me tonight that his ecotech was just shy of 1400 pounds of thrust when tested today. Compared to a strong running angle valve 0540 pulling around 950 pounds of thrust on the same test equipment. I fully expect to get 8 to 10 miles per gallon on a boat should end up with more than 1400 lbs of thrust and weigh around 1100 lbs or less. I cant wait. Should be a very fun boat to drive. Thanks again JEFF

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Re: I'm drinking EcoTech Kool-Aide

Post by br,lc,LA »

Yep never can take away being the first to have something... I got the first 1.4L turbo and its sure nice even after sinking and getting it running again...
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"Nothin' as Fine as Hearing a Turbo Whine"

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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

IMG_7993.jpg
[attachm
ent=1]IMG_9925.jpg[/attachment]

Nobody does better or faster work that Al David. Drop ed this off on Sunday and he has it this far in 3 1/2 days. Soon I will be sipping kool-aid
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Post by DynaMarine »

Looking good JB
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Post by captrndy »

Starting to get somewhere now Jeff. It looks great!!! Al's riggings look great!!

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Post by gyrocopter582 »

Badass Jeff.
Just think how long it will last as well.
Turn key, just like a new car.
Look forward to following you around Kissimmee one day.
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Re: I'm drinking EcoTech Kool-Aide

Post by fl cracker »

If it runs as good as the others it will be unstoppable on that hull.
" I have two guns...
One for each of you "

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Re: I'm drinking EcoTech Kool-Aide

Post by JB550 »

fl cracker wrote:If it runs as good as the others it will be unstoppable on that hull.
Exactly what I was thinking when I put it on this little 12 foot Marty bray. :thumbleft: :thumbleft: I am also hoping for it to one of the quietest airboats ever. Notice in the picture above I am leaving the catalytic convertor on not only for emissions but it also quiets the motor even better than a muffler.

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Re: I'm drinking EcoTech Kool-Aide

Post by armedic »

What's the warranty if you're buying these engine new? With all the sensors I wonder if they will hold up to the salt water environment where I run 95% of the time. Sure has my interest with the fuel mileage they get.
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427 SBC dart
Ox Drive 2.68 ( clutch coming)
Sensenich 4 blade R 81.5"

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Re: I'm drinking EcoTech Kool-Aide

Post by chuckitt@earthlink.net »

I give a 2 year warranty on the used engines I set-up and sell. If I find an engine for you and charge a small finders fee, no warranty. All the wiring and sensors have sealed connections just like all the cars and trucks that are used around salt air areas so I don't predict any problems.
You would get better fuel mileage if you change your reduction to a 2.38 ratio, you have the right engine for the 2.38 and a good prop for more prop speed. It would still go where you want to go, maybe better.

Thanks, Chuck

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Re: I'm drinking EcoTech Kool-Aide

Post by armedic »

Thanks Chuck. If I do something it'd be a new hull in the future.
15 X 7'9" Alumitec
427 SBC dart
Ox Drive 2.68 ( clutch coming)
Sensenich 4 blade R 81.5"

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