Update, November 2, 2022:
It’s no secret that straight sixes are the favorite of many in the convertible world, with Ford’s Barra, Toyota’s 1JZ and 2JZ and Nissan’s RB series being the most popular. Now the guys from Mopar have hit the ground running, with a crate version of the Jeep-sourced, 3.0-liter Hurricane twin-turbo six revealed just in time for the SEMA show.
Dubbed the HurriCrate, the new mill is based on an aluminum head and block and features, liquid-cooled intercooler, direct injection and variable valve timing. The exhaust manifolds are liquid cooled and integrated into the head.
HurriCrate will be offered in two specs. The ‘Cat 1’ spec runs 10.4:1 compression, boosts 22psi peak and features cast aluminum pushers with cast iron top ringland inserts. It is rated at 420hp and 468 Ib-ft. of torque by 2,500rpm.
The ‘Cat 3’ has a compression ratio of 9.5:1, with oil-cooled forged pistons, 26psi peak boost and a dual-inlet intercooler. It is rated at 550hp and 531 lb-ft. of torque at 3,500rpm.
A ‘Cat X’ race version is also in the works, with output in the 1000hp range being speculated by SEMA.
Update, March 28, 2022:
Stellantis, Jeep’s parent company, has released more details on its new 3.0-liter twin-turbo six-cylinder engine, designed to offer more performance than the V8.
The GMET6 engine, dubbed the ‘Hurricane’ – not the ‘Tornado’ as earlier rumors suggested – comes in two versions: a Standard Output (SO) tune, and a High Output (HO) one. Variant.
Exact figures will vary as they fit models from the Jeep, Ram, and possibly Chrysler ranges, but the SO engine is confirmed to be “over 294kW”, while the HO is over 368kW.
Torque is rated at 612Nm and 646Nm respectively.
“As Stellantis aims to become the US leader in electrification, with a 50 percent battery electric vehicle (BEV) sales mix by 2030, internal combustion engines will play a key role in our portfolio for years to come and we look forward to to deliver the cleanest, most efficient propulsion to customers and the environment,” said Mickey Bulley, head of propulsion systems at Stellantis.
“The Hurricane Twin Turbo is a no-compromise engine that delivers improved fuel economy and a significant reduction in greenhouse gases without asking our customers to sacrifice performance.”
Parallel turbos will boost 22psi on the SO and 26psi peak for the HO, feeding a water-to-air intercooler.
The inline-six’s basic engine architecture, including bore and stroke and cylinder placement, is actually shared with the 2.0-liter four-cylinder engine found in the Jeep Wrangler, Wrangler 4xe, Cherokee, and Grand Cherokee 4xe.
Stellentis says the first Hurricane-powered models will be in US showrooms in 2022, though there’s no word yet on when we can expect to see the engine in Australia.
The story here
25 March 2022: Jeep’s all-new six-cylinder engine has been revealed, with the company including the powertrain as an upgrade within the American online configurator.
While Jeep has provided few details about the engine, all the picture confirms is that it’s getting a 3.0-liter twin-turbo inline-six for use in the brand’s Stellenbosch family.
Although the image doesn’t show the exact number of cylinders, we can see that this is an inline motor with twin overhead camshafts, and the engine cover has a number of markings pointing to six cylinders – as well as the obvious ‘Twin Turbo’ script.
Evidence suggests that this is indeed the all-new ‘Tornado’ engine – known internally as the GMET6 – which is rumored to produce over 370kW in High Output (HO) form. Is.
Standard Output (SO) and Plug-in Hybrid (PHEV) powertrains will also be available by 2024. Mopar InsidersWhile mild hybrid support can be offered with the HO engine.
The Tornado was seen as a somewhat secret ‘engine upgrade’ on Jeep’s configurator for the new Grand Wagoneer, which could be optioned for US$2000 for those not wanting the standard 6.4-litre V8.
The deliberate omission of details on the ‘engine upgrade’ suggests that this was a deliberate move by Jeep rather than an accidental addition.
30 December 2021: A new six-cylinder turbo engine may replace the older V6 and V8 found in Jeep and Ram models.
Nicknamed the ‘Tornado’, the twin-turbo 3.0-litre six-cylinder engine was listed on a website for the Stellantes factory in Mexico, with information that the powertrain began production on 22 November.
A sleuth from Allpar Forums Discovered before the page was removed, but Automatic evolution Information has since surfaced from a Fiat dealership (which Fiat is part of the Stellantis Group, along with Jeep) showing the turbo-six in the Jeep Wrangler, Gladiator, Grand Cherokee, and most recently the Scenery. Will be planted in the common garden.
The document also suggests that the engine will also go to the Ram 1500 pickup.
Known internally as the Global Medium Engine Turbo-Six, or GMET6, the engine also has a high output (HO) version – possibly adopting mild hybrid technology.
While the engine has been rumored since a patent filing was discovered in November 2019, a website leak has confirmed that it will become a reality.
The Tornado’s twin-turbo inline-six is expected to replace the Pentastar V6 and Hemi V8 found in the Jeep and Ram lineups, likely offering fuel economy and emissions benefits with nearly identical performance.
In the Jeep Wrangler and Gladiator, the 3.6-litre Pentastar V6 produces 209kW and 347Nm, while the 5.7-litre Hemi V8 found in the Ram 1500 pickup produces 291kW and 556Nm.
Jeep and Ram have yet to officially announce the Tornado engine, but it looks like the engine has already entered production, making it likely that the new powertrain will make its debut in the coming months.