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Inside the Toyota Tundra i-FORCE Engine | Wellesley Toyota

Posted by Jared Katsoupis on Tue, Jun 03, 2014 @ 08:00 AM

Toyota, Tundra, i-FORCE, Engine

A lot of the time, we don't seriously consider what is underneath the hood of a car before buying it. We admit, we like talking about things such as color, style, and technology. However, a vehicle's engine is possibly the most important part of a vehicle when it comes to saving your hard-earned money, and there's much more to them than horsepower and cylinders. Toyota's model line offers a wide variety of vehicles that have the same or similar engines that all work hard to maximize performance while still being extremely efficient.

In the coming weeks, we'll take a look at a few of the Toyota models and the engines that make them go, breaking down some terminology and a few key features that most casual car buyers may not have otherwise noticed.


Toyota Tundra

Engine: 4.6 Liter Aluminum i-FORCE V8         

i-FORCE is the name given to the Toyota Tundra's powerful V8 engine. This engine uses VVT-i, which stands for “Variable Valve Timing with intelligence” for improved fuel economy. What makes this engine different from traditional engines is that Toyota developed a way to overlap the time between when the exhaust valve closes and when the intake valve opens. This results in drastically improved fuel economy for these larger vehicles that require an 8-cylinder engine. This type of engine is standard on the Tundra, Tacoma, Land Cruiser, Sequoia, FJ Cruiser, and 4Runner.

E85, Ethanol, Gas


Flex Fuel option 

The Tundra also offers the “Flex Fuel” option on its 5.7 Liter engine. For those who may not know, Flex-fuel is an alternative energy source for engines that can accept either gasoline or a special gasoline and ethanol mix called E85 (85% ethanol to 15% gasoline). This is a more eco-friendly source of fuel that is also a renewable resource and commonly produced from corn crops.


Tundra Engine Size (in Liters) 

Piston, visual, engine

The Toyota Tundra offers 4 different engine sizes with a 4.0 Liter engine, a 4.6 Liter engine, a 5.7 Liter engine, and the previously mentioned 5.7 Liter Flex-Fuel engine. So, what are engine liter measures and why are they important? Essentially, the more liters your engine holds, the more powerful it is. Each piston in your engine is a certain size, and within that certain size only so much air and gasoline can be sucked in and then released. The energy resulting from this process is your engine's power. The larger the piston and the more it can hold, then the higher liter engine you have, thus giving your vehicle more power. This is why the Tundra starts at a 4.0 liter engine and 270 horsepower, progressing to the 5.7 Liter engine with 381 horsepower. Typically, the more engine liters you have, the more horsepower you have.

To view our selection of Toyota Tundras and all the other models with an i-FORCE engine visit us online at our Wellesley Toyota inventory page or stop by our dealership off Route 9 in Wellesley, MA.

Topics: Engine, Tundra, Liter, Flex fuel, Piston, Ethanol

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