More info: Mopar’s new Hurricane Six

On Friday, Stellantis unexpectedly revealed its new Hurricane Six, after it was accidentally revealed to the public yesterday, fittingly by an Allpar reader. Stellpower followed quickly with a story to confirm the existence of an engine I have written about for at least five years.

The Hurricane will be the primary gasoline engine for STLA Large and Frame vehicles, which include the next-generation versions of the Challenger (and probably Charger), Ram 1500, Jeep Grand Cherokee, and Wagoneer. These vehicles will almost certainly all be made in BEV, hybrid (4xe), and Hurricane versions.

Mopar twin turbo inline six: Hurricane engine

The Hurricane itself was named after a British fighter plane of World War II, made by Hawker; but like the Tornado, the name was previously attached to a Jeep engine, albeit a four-cylinder (Tornado was the code name for the four-cylinder 2.0 liter GME engine the Hurricane is based on).

More information has come to light since our first story.

The two variants.

We already reported on the high output and standard output versions. The standard version will take regular fuel, but provide more power with premium; the high output version will require premium. The difference between the two goes beyond the turbochargers; internal parts are also different, including the valve train.

(Tables from Motales.com🙂

The power ratings are estimates and actual power may be higher.

Standard High Ouput Performance
Horsepower 400+ 500+ 520?
Torque 450+ 475+ 490?
Turbochargers Twin Twin Twin
Fuel injection One pump Twin pumps
Intercooler water inlets One inlet Two inlets
Fuel 91 octane* 91 octane Premium
Compression 10.4:1 9.4:1
Redline 5,800 rpm 6,100 rpm
Weight 430 lb 441 lb
Dimensions 33.4 x 28.7 x 32.7 33.9 x 29.0 x 33.4
Oil 0W20 (API SP) 0W40 (API SP)
Peak boost 22.4 26

* Regular may be used with less power, but only on the standard-output version

Common measurements:

Bore x Stroke 3.31 x 3.54
Displacement 183 (2.993 liters)
Peak boost 22.4 psi / 26
Oil 7.5 qt (w/filter)
Coolant 16.6 qt high
2.85 qt low*

* There are two cooling circuits, the main engine circuit and the turbocharger/charge air cooler circuit. The main circuit uses a belt driven pump, while the turbo circuit uses an electric pump and can continue coolant circulation after the engine is shut off.

GMET6: inline twin turbo Hurricane engine

As noted earlier by Stellpower, the engine is based closely on the 2.0 liter GME T4, used by the Wrangler in standard and 4xe forms; as the optional Cherokee engine; and as part of the Grand Cherokee 4xe.

Sodium-filled exhaust valves provide heat resistance. The engine has hydroformed tubular camshafts and roller finger followers with hydraulic lash followers. The block itself is a deep-skirt cast aluminum design with cross-bolted steel main bearing caps. The oil pan is die-cast. The aluminum alloy heads have a pent-roof design, with a forged and twisted steel crankshaft, forged steel connecting rods, and die-cast aluminum alloy pistons with DLC-coated pins.

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