Hurricane I6 Finally Revealed | Page 14

From Autoblog:

After years of rumored development, Stellantis has revealed its new six-cylinder engine family. The 3.0-liter, twin-turbocharged “Hurricane” I6 will offer V8 power, forced-induction torque and six-cylinder efficiency in a package designed to fit into any of the company’s North American rear-wheel-drive platforms.

See Appendix 86909

What exactly is “V8 power”? Well, in standard trim, the new I6 makes more than 400 horsepower (the specific figure varies by application) and 450 pound-feet of torque, while the high-output variant is good for more than 500 horses and 475 lb-ft of torque.. The final figures will depend on the application. We save some legwork: In current Ram, Jeep and Dodge products, the 5.7-liter Hemi tops out at about 395 hp and 410 lb-ft, give or take, and the 6.4-liter about 485 hp and 475 lb- with.

This is a clean design only related to the company’s turbocharged four-cylinder with some common dimensions. The I6 is exclusively direct-injected (no hybrid/port injection here) and the two I6 variants share 96 common parts, including block and sump design. The differences are found in their internals, intake manifolds, valve components and the turbocharger itself. Stellantis isn’t yet ready to share specs or supplier information for the turbos but says announcements will be coming from its partners soon.

The standard power I6 has a compression ratio of 10.4:1 and revs to 5,800 rpm. It will run on regular fuel, albeit with reduced performance; 91 octane is recommended for maximum power. The high-output variant has a compression ratio of 9.4:1 and will rev to 6,100 rpm. It will require premium.

The new I6’s benefits extend beyond basic power output. Every Hemi family engine currently in production is based on an iron block design, so they are heavy. The aluminum block I6 shaves weight off the overall engine package, although some of it is added back thanks to the turbos and their associated plumbing. The standard-output I6 weighs 430 pounds, Stellanti’s engineers told us; the high output only adds another 11. Fully dressed 5.7-liter V8s are in the 550-560-pound ballpark, and 6.4-liters approach 600 pounds.

You might be wondering, “Why a pure gasoline engine now, when the industry is moving toward battery electric?” A valid request, and one Stellantis was prepared to address. Although the company will switch to electrification in the next decade, it won’t happen immediately. This engine family was designed with electrification (hybrid or plug-in) in mind, but Stellantis wouldn’t say when we’ll see these hybrids. Think of this as a bridge between ICE and BEV.

In fact, the company’s propulsion teams were incredibly tight-lipped about what to expect in terms of applications. In practical terms, it will fit anywhere the 3.6L Pentastar V6 or Hemi fits, assuming you’re talking about RWD platforms. For those who want to make their own measurement, the standard power Hurricane measures 33.4 inches x 28.7 inches x 32.7 inches. The high power output checks in at 33.9″ x 29.0″ x 33.4″.

That said, don’t expect Stellantis to start ditching the 3.6-liter in favor of the 3.0TT in its regular cars. Just because that Can fit doesn’t mean Stellantis will; look how long it took us to get a Hemi in a Jeep Wrangler. And don’t expect it to show up in any Stellantis products built overseas, either. This engine family was designed primarily for North America; only American-built export models will be running for the time being.

We won’t have to wait long to find out exactly where it will appear. Stellantis finally confirmed rumors that the engine has been in production since November and says the first products using it will materialize within months, not years. We’re supposed to see the first β€” a Jeep, and the smart money is on the new long-wheelbase Wagoneer β€” at the New York International Auto Show in April.

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