Report: Pentastar V6 may be replaced by inline turbo 6 cylinder engine

  1. Warrior Class

    Warrior Class Active Member

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    #1 Dec 20, 2018
    Last edited: Dec 20, 2018
    Sounds like the replacement of the Pentastar V6 wouldn't begin happen until 2020 with the intro of the Jeep Wagoneer. But with the Wrangler's usual model life being so long, I wonder if we'll see the inline turbo 6 in the JL Wrangler at some point. Waiting until the next generation Wrangler would mean running a legacy engine (Pentastar V6) all the way until 2028 (assuming JL model life runs 10 years).


    Via Allpar

    A brand new FCA in-line six-cylinder engine, turbocharged to meet or beat 5.7 Hemi power ratings, with a smoother torque curve, is on the way. The first vehicle to get it might be the Jeep Wagoneer or the next-gen Grand Cherokee, but it’s also bound for the Charger and Challenger, and may replace the Pentastar as base engine on the Ram pickups.

    To keep space requirements low, FCA is going to have to pull out all the stops, so it’s not likely to be a GME four-cylinder with two more holes tacked on. The engine will have relatively small bores, closely spaced, to reduce its length; Lancia and Volkswagen have some old tricks that may come into play. Since ever millimeter counts, Chrysler’s traditional steel cylinder liners may be rejected in favor of aluminum hardening. Reportedly, the goal is to stay within three inches of the current 2.4 liter four-cylinder.

    The expected displacement is just under 3 liters, coming under a displacement-tax threshold, with power boosted either by twin turbos or by a twin-scroll turbo. The code name might be Tornado, or perhaps that’s wishful thinking; in any case, the engine coded Hurricane is known as the “2.0 liter four cylinder,” so it seems likely the GME-T6, even if nicknamed “Tornado,” will just be called the “3.0 liter six cylinder” in official statements.

    Forced induction would likely be through twin scroll turbochargers for the Chrysler versions, and perhaps dual turbochargers for Alfa Romeo and Maserati, if they share it. Any Italian versions would most likely have Ferrari-designed heads and different blocks.

    Straight sixes are inherently smoother than V6s, and have a bit of snob appeal, given their use by BMW (mainly) and by Mercedes.
     
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  2. ThirtyOne

    ThirtyOne Well-Known Member

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    Wrangler usually gets a mid-cycle refresh after about 5 years.

    The JK debuted in 2007 and the Pentastar 3.6 was added in 2012.

    So 2021 or 2022 would be about right to change the powertrain. Though with CAFE they may need to be more aggressive.
     
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  3. Tech Tim

    Tech Tim Well-Known Member
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    That would be pretty dang cool! The last great Jeep engine in many people eyes was the 4.0 HO I6 in the TJs, LJs and Cherokees.
     
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  4. Shenanigans

    Shenanigans Well-Known Member

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    I could definitely go for a an I-6 turbo.
     
  5. XJrider

    XJrider Well-Known Member

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    I highly doubt this happens.
     
  6. JD Flick

    JD Flick Well-Known Member

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    I just want the 5.7 L Hemi... why is that hard :(
     
  7. LeaN69

    LeaN69 Well-Known Member

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    It makes more sense for new Inline 6 turbo to replace the currently ancient 5.7L Hemi, which means most likely it will not be offered on the wrangler.

    With recent "upgrade 1" to pentastar and near future addition of BSG to Pentastar I really doubt it will go away anytime soon.
     
  8. Dogboyslim

    Dogboyslim Well-Known Member

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    3 letters: E.P.A.

    Or 4 letters if you prefer: C.A.F.E.
     
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  9. WXman

    WXman Well-Known Member

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    This info has been tossed around for a few years. So far, nothing concrete on it.

    But, it would be nice to finally have some torque again.
     
  10. Spank

    Spank Well-Known Member

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    I agree. If anything, it'll be the 2.0L turbo that replaces the Pentastar.
     
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  11. jeepingib

    jeepingib Member

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    I6 engines have a lot of engineering advantages to V6 engines. So I amam all for it as long as packaging isn't an issue
     
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  12. Tex117

    Tex117 Well-Known Member

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    Yeah, I doubt it. I tell ya. The Penstar on a manual is pretty quick all things considered.
     
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  13. Muzzle of Bees

    Muzzle of Bees Well-Known Member

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    The memo said space requirements needed to be met..
     
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  14. boon4376

    boon4376 Member

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    I'd guess they'll be simply adding 2 more cylinders to the current i4 turbo - which would be the simplest / most logical option. Easily get 350+ HP out of it. This would also be in line with other manufacturers making more modular engine designs these days.

    If that's the case, it should be very easy to adapt to the JL. Engine mounts and transmission pairing probably won't have to change at all. Just bolt the new ones in. I assume they built the JL with this future engine room in mind.

    That is, unless they're planning a transversely mounted setup like what Volvo used to do. Then it will probably just go into FWD based, AWD setups.
     
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  15. Kent5

    Kent5 Well-Known Member

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    i6t in a JL?

    "I'll take 'THINGS THAT WILL NEVER HAPPEN' for $500, Alex..."

    Sounds more like a V8 replacement than something that would replace either the 2.0T or the 3.6 in the JL. I *like* inline 6's, but they can have packaging issues due to their length. Could those be solved in the JL? Perhaps, but why? What problem would be solved? if you're wanting to tow the really BIG stuff, you should be shopping a FS truck and not a midsize SUV.
     
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