The new i-FORCE MAX hybrid system from Tundra is designed for the needs of a full-sized truck. It extends on the main twin-turbo 3.5-liter V6 by brilliantly coupling a motor generator system installed inside bell-housing to create an inline hybrid powertrain that delivers 437 horsepower and a monstrous 583 lb.-ft. with torque.
In This Article...
What does the term “iFORCE” mean?
The Toyota Tundra’s potent V8 engine, known as “i-FORCE, utilizes VVT-i, or “Variable Valve Timing with Intelligence for improved fuel efficiency.
What is the Toyota iFORCE V8?
The 5.7 “i-Force” V8, also referred to as the 3UR-FE, is a member of the same global family of Toyota and Lexus V8 engines, along with the 4.6L and 5.0L V8s found in the GX460 SUV and several Lexus cars.
However, the 5.7 liter was created especially for the US market and was also put together there. It made its debut in the all-new second generation Tundra pickup for the 2007 model year.
The second-generation Tundra was a larger truck than its predecessor, therefore Toyota created a new V8 engine with the same displacement as the storied Chevy 350ci small block to compete with its domestic half-ton rivals and Nissan’s Titan.
How does the Toyota Tundra hybrid system work?
“In the two-motor system, you have the first motor-generator and that is taking the power off the engine and converting it to the battery, making electrical power off of the engine. Then the second motor generator is behind the planetary gearset and it’s connected directly to the wheels,” Herring explained.
Is the Iforce 5.7 a Hemi?
The Dodge HEMI engine is being used today. The HEMI engine’s long history began in the 1940s when Chrysler coaxed 2,500 horsepower out of an experimental V16 fighter plane engine by inserting hemispherical combustion chambers. In an effort to achieve a better fuel-air mixture, engineers discovered that the unconventional cylinder head’s walls maintained a more constant temperature and had space for larger valves, which increased airflow.
A HEMI V8 first debuted in Chrysler’s 1951 models. The new engine was used by drag racers throughout the 1950s, and championship drag racers today base their engines on the original HEMI. Dodge introduced the 426, which rules NASCAR, to usher in the second generation of the HEMI. Then, in 2003, Dodge debuted the third-generation HEMI, a modern aluminum, fuel-injected V8.
Today, the Dodge HEMI lives on in naturally-aspirated 5.7-liter and 6.5-liter variants, as well as a 6.2-liter supercharged HEMI built by SRT. Although Stellantis provides a variety of engines for the Ram, many customers choose the 5.7-liter HEMI, one of the top V8 truck engines.
Dodge engineers modified the 5.7-liter HEMI for the 2009 model year with Variable Camshaft Timing (VCT), which is the Dodge version of variable valve timing. This V8 is capable of 395 hp and 410 lb-ft in the Ram 1500. with torque.
Being inefficient on gasoline due to its massive combustion chambers is a common complaint about the HEMI. Dodge engineers came up with a multi-displacement system (MDS) that, whenever possible, turns off half the cylinders to remedy this issue. Additionally, Ram trucks can be ordered with the eTorque mild hybrid system. To conserve gasoline, this system has an electric starter/launch engine. The resulting 2021 Ram 1500 is capable of 19 mpg combined and 17 city/23 highway mpg. The Ram 1500 with a 5.7L HEMI engine is capable of pulling 11,610 pounds.
Key Points
- Although two Toyota Tundra owners exceeded the million-mile barrier, most drivers should anticipate that their Tundra will achieve its maximum mileage of roughly 300,000.
- For the Toyota truck, repairs are inexpensive.
- Exhaust manifold leaks and ball-joint failure are frequent issues in high-mileage Tundras.
Is the Toyota 5.7 L V8 an effective motor?
You’ve probably heard of engines like the 22 R-E, 2UZ-FE, and 1GR-FE if you’re a serious Toyota aficionado. The reliability and usability of Toyota’s trucks and SUVs were really cemented by these engines. However, Toyota debuted their largest engine to date in 2006: the 3UR-FE 5.7L V8.
One of the best engines for a full-size pickup truck or SUV is the Toyota 5.7 V8. It has been utilized by Toyota for the past 14 years with good reason: it provides both dependability and outstanding performance data. The engine’s poor fuel efficiency is its sole serious flaw.
What kind of MPG can the hybrid Tundra expect?
The EPA certifies it at 20 mpg in the city and 24 mpg on the highway or 22 mpg in mixed driving. That is a significant number for a full-size truck.
Who makes the iFORCE engine?
This innovative design uses an aluminum block with a 3,445 cc displacement with an 85.5 mm bore and 100 mm stroke. The 24-valve, Dual Overhead Cam V6 is chain-driven and features Dual VVT-i systems. When dealing with turbos, heat is always a concern. Because the water-cooled intercooler keeps the turbo temperatures low, Toyota has addressed this. Modern cylinder heads for maximum boost reliability have been created by Toyota engineers. They feature a two-layer water jacket structure for maximum coolant flow and combustion chamber strength. Then, machined cross-channels were included to provide additional combustion chamber cooling. To enable increased coolant flow near the spark plug, the intake ports feature low-profile, laser-applied powder metal. As for exhaust cooling; the engine uses a computer-optimized exhaust valve shape, integrated exhaust manifold and cylinder head design that uses the same water jacket to lower exhaust gas temperature entering the turbochargers.
According to claims, the redesigned cylinder heads (with cross-channels) increase cylinder head dependability and operational efficiency.
Is the iFORCE Max a hybrid?
The i-FORCE MAX hybrid powertrain, which is an option, has a staggering 583 lb.-ft. of torque and 437 horsepower at 5,200 rpm, making it the top dog in the Tundra line. at a low 2,400 rpm of torque. Yet, this new powerhouse is also an efficiency maven, with up to EPA-estimated 20 MPG city/24 MPG highway/22 MPG combined fuel economy ratings, depending on model grade and drivetrain. The new i-FORCE MAX combines a 10-speed automatic transmission with a twin-turbo V6 engine, a motor generator, and a clutch that is housed inside the bell housing between the engine and transmission. The motor generator provides additional power through the transmission, while the engine start-up, EV driving, electric assist and energy regeneration are solely done via the parallel hybrid components. The system employs a proven and reliable 288V sealed Nickel-metal Hydride (Ni-MH) battery located under the rear passenger seats.
Do Toyota Tundras get good gas mileage?
Offering an excellent blend of high engine power and fuel efficiency, the Toyota Tundra is an excellent truck to keep you taking on big jobs all day long. You may be wondering, though, what exactly makes the Toyota Tundra such a fuel-efficient truck.
With impressive towing capabilities and engine power, this vehicle achieves an EPA-estimated 13 city MPG and 18 highway MPG.* Andy Mohr Toyota will show drivers in Avon, Indianapolis, and Plainfield, Indiana, just how efficient the Toyota Tundra is!
What is iFORCE Max engine?
The brand-new Tundra hybrid model, the Toyota i-FORCE MAX, upgrades the Tundra’s twin-turbo 3.5L V6. The i-FORCE MAX’s inline hybrid powertrain allows it to produce astonishingly more power and torque than its gasoline-powered counterpart: 437 horsepower and 583 pound-feet of torque.
Which Tundra engine is best?
Virginia drivers looking at the Toyota Tundra want a full-size pickup that can handle anything. This truck is capable of towing thousands of pounds and traveling off-road. When configuring your Tundra, you will have to pick between two engines, the 4.6-liter V8 and the 5.7-liter V8.
The 4.6-Liter V8
The base 4.6-liter V8 engine generates 310 horsepower and 327 pound-feet of torque while working with a 6-speed automatic. It has a 32-valve head design, Dual Independent Variable Valve Timing with Intelligence, and Double Overhead Cams. Depending on how you configure your Tundra, this engine will tow up to 6,400 or 6,800 pounds.
Which One?
To choose between the two Tundra engines, you need to think about how much you plan on towing and the amount of power you need. The 4.6-liter engine will offer better fuel economy and make your Tundra more affordable. This means that if it provides enough power for your needs, you should select it. When in doubt, however, upgrade to the 5.7-liter. Overworking your engine will damage it and lead to expensive repairs, and you don’t want to end up with a Tundra that doesn’t fit your needs.