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Atkinson Variable Displacement V8 Coming To The Tundra

A note from the Editor: with the new Tacoma coming to market with an Atkinson cycle engine, we thought it made sense to republish this older post that explains how it works.

When rumors of a V8 Lexus coupe with “variable displacement” hit the automotive press a few months ago, I was more than a little skeptical. Quite a few Toyota employees have said that the typical variable displacement technologies employed by GM and Chrysler-Fiat are “not in the best interests of the consumer,” which is Toyota-speak for “variable displacement is a stupid gimmick,” at least when GM and Chrysler-Fiat do it.

Considering all the problems GM trucks have had with their active fuel management systems (which can consume 1-2 quarts of oil between changes), Toyota’s stance makes sense. Yet a number of sources claimed Toyota’s new V8 Lexus coupe would have variable displacement technology, and I found myself a bit dismayed. Would Toyota succumb to the allure of variable displacement systems that raises a vehicle’s EPA rating without any real-world benefits?

The Lexus RC F 5.0L with variable displacement.

Today’s announcement from Toyota about a new family of “thermally efficient” engines all but guarantees that the Tundra will be getting a variable displacement V8, similar to the system found on the new Lexus RC F 5.0L V8 (shown).

Fortunately, the answer is no. The new Lexus RC F comes with a 5.0L V8 that can operate both as a traditional Otto cycle engine and as an efficient Atkinson cycle engine, which – in a manner of speaking – means the engine is variable displacement. When you combine this news with today’s announcement from Toyota about a “new series of gas engines,” it’s safe to say that the Tundra will be getting a variable displacement V8. Probably in the next 2 years.

Toyota Tundra 2014 Year-End Sales Nearly Hit Target

The first full year of the 2014 Toyota Tundra redesign sales are in the books and they are mixed. While Toyota nearly hit their sales target, this target was really conservative to begin with.

Toyota Tundra 2014 Sales Results

Toyota narrowly missed their yearly truck sales goals. Yet, they had a big year in many other ways.

2015 Toyota Tundra TRD Pro Finishes PUTC’s Challenge In Last Place – Here’s Why

Another half-ton challenge is in the books and, almost predictably, the Toyota Tundra finished dead last. Here’s why. V-8 Challenge

This image sums up everything that is wrong for the Toyota Tundra TRD Pro in the 2015 V-8 challenge test. Namely, if you bought a TRD Pro off-road to consistenly tow, you missed the point. Photo credit: Evan Sears,

2016 Toyota Tundra – What We Would Like To See

In a few weeks, the Detroit auto show kicks off a hectic spring with a new Nissan Titan, new Toyota Tacoma and possibly a new Ford Raptor being unveiled. What’s missing from this list? Toyota Tundra updates. While we don’t expect anything in Detroit, there is a possibility of an announcement during the Chicago Auto Show in February. Whether or not an annoucement is made, here is what we would like to see from Toyota.

2016 Toyota Tundra - What We Would Like To See

As the auto show season begins, here is what we would like to see Toyota announce as new changes for the 2016 Tundra.

Is Ram Working on a New Turbo Pentastar V6? When Will Toyota Update Their Engine Lineup?

A recent report in says Fiat-Chrysler Automobiles is looking to add turbocharging and direct injection to its Pentastar V6 engine. If this comes to fruition, it would seemingly improve the fuel economy of the engine and is a direct response to the new “highest EPA-estimated fuel economy ratings of any full-size gasoline pickup” claims of Ford’s new 2.7L EcoBoost. The race for best half-ton fuel economy supremacy is getting incredibly competitive.

Is Ram Working on a new turbo Pentastar V6? When Will Toyota Update Their Engine Lineup?

Ram is reportedly working on turbo-charging their Pentastar V6 engine. Will Toyota ever offer a turbo truck engine?

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