Jeep, Dodge, Ram Get New Stellantis Turbo Inline-Six Engine

  • Stellantis’ all-new twin-turbo 3.0-liter inline-six, dubbed the Hurricane, should find its way under the hood of several models for the 2023 model year, possibly from the Jeep Wrangler to the Ram 1500 and Dodge Charger and Challenger .
  • It will be offered in standard and high-power variants and will fit any vehicle currently sold with a longitudinal engine.
  • Production has already started at Stellantis’ Saltillo South engine plant in Mexico.

    From battery technology to powerful compact electric motors, the headlines around electrification seem to be all over the world these days. Although we are undeniably interested in the future of electric propulsion systems, the technical feat of a clean combustion engine is a breath of fresh air. While other automakers have ambitious goals to go all-electric by 2030, Stellantis has identified the need for gasoline engines in the future, and the company’s goal of being 50 percent electrified in North America by then seems more realistic. Enter the Hurricane: a twin-turbo 3.0-litre six-in-line.

    The new power unit will fit into any vehicle currently sold with a longitudinal engine. When the Hurricane arrives under the hoods of several Stellantis vehicles within the next year, the double-overhead-cam, direct-injection inline-six will have bore and stroke of 84.0 millimeters and 90.0 millimeters. The block and cylinder head are made of aluminum and the cylinders are spray painted using a plasma transfer wire arc process that adds a thin iron coating to the cylinder walls, saving three pounds compared to using a more traditional iron sleeve, according to Stellantis. Those bore and stroke figures are identical to BMW’s powerful S58 3.0-litre inline six-cylinder engine that powers the M-brand, and also follows the same approach where each turbo is fed by three cylinders to minimize turbo lag. The Hurricane will be offered in standard and high-power variants.

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    Stellantis says the standard horsepower engine will deliver more than 400 horsepower and 450 pound-feet of torque, with final output figures being determined by the individual brands using the new mill. The lower horsepower version has a compression ratio of 10.4:1 and the intake charge is pressurized by the twin turbos with boost to 22.4 pounds before being cooled by a water-to-air intercooler. The junior 3.0-liter spins up to 5800 rpm and runs on 87 octane, although 91 is recommended.

    The high-output version will deliver more than 500 horsepower and 475 pound-feet of twist, putting it on par with BMW’s strongest six-cylinder offering. The compression ratio has been lowered to 9.5:1 to accommodate the 26.0 psi delivered by the larger turbos via a dual-inlet intake. The high-power engine has its own cylinder head, crankshaft, larger water-to-air intercooler and forged aluminum pistons (compared to the stock output die-cast pieces) and will rev slightly higher, up to 6100 rpm, though far from the glorious 7200-rpm whimper of BMW’s singing six. It takes 91 octane to generate all this miraculous power.

    These engines can be used for a number of Stellantis products such as the Jeep Gladiator, Grand Cherokee, Wagoneer, Grand Wagoneer and Wrangler; the Ram 1500 and 2500; and the Dodge Challenger and Charger. If we were to speculate, we’d say the new inline-six will replace the classic – albeit wildly inefficient – V-8s we’ve come to love and the venerable Pentastar 3.6-liter V-6, but Stellantis refused to say That. Nevertheless, we are excited to get our hands on the Hurricane in the coming months.

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