Pentastar Replacement Rumor

[OneLonelyBurrito]

Looks like Jeep is getting ready to launch the 2026 Jeep Grand Cherokee with a new engine option. This is all rumors right now, since they haven't officially announced anything yet. Forum Post from Jeep Garage

Looks like the engine is gonna be named Hurricane4 EVO.
Assuming it retains the 2.0L displacement.
Horsepower appears to increase from 270hp in the GMET4 to ~325hp.
Torque looks to increase from 295 -> ~332ft-lbs
Fuel efficiency claims to be better compared to the outgoing GMET4 along with lower criteria pollution emissions (NMOG+NMHC/NOx/CO/PM)
Looks like it might be using a variable geometry turbo, which will be interesting in a more mainstream gasoline engine. The only gasoline engines that come to mind in North America that use a VGT Turbos are Porsche 911 Turbo engines.

The specs look pretty good for this new engine if they turn out to be true. Hopefully it turns about to be a reliable engine for Jeep. I would definitely be interested in test driving it in the Grand Cherokee. Maybe they will put it in a cheaper version of the new Dodge Charger.

Reddit Post about the engine

[copyrighted photo removed]

 

[SC Maintenance]

So is this just an update to GME and move production to USA?

FWIW I know a guy that went from Xterra to a Wrangler with the old GME - 2021 I think? He likes it.

 

[OneLonelyBurrito]

So is this just an update to GME and move production to USA?

As far as I know the GMET4 has always been produced in the US.

As for update vs redesign, I don't know. It could be the Hurricane 3.0L with 2 cylinder cut off or it could be just a slightly modified version of the GMET4 2.0L. I guess we will find out once everything is announced.

 

[slacktide_bitog]

They should put the Hurricane (6) in more cars

Maybe Chrysler will make the Hurricane with 3, 4, 5, and 6 cylinders

 

[OneLonelyBurrito]

They should put the Hurricane (6) in more cars

Maybe Chrysler will make the Hurricane with 3, 4, 5, and 6 cylinders

I don’t know if it’s true, but it sounds like they tried to put the 3.0L Hurricane in the WL Grand Cherokee but they ran into too many problems with it.

 

[4WD]

I’ll wait

 

[Slick3914]

Spray bores do not sound good for longevity

 

[SC Maintenance]

Spray bores do not sound good for longevity

I thought PTWA was good - usually reserved for high performance engines?

 

[JHZR2]

Looks like it might be using a variable geometry turbo, which will be interesting in a more mainstream gasoline engine. The only gasoline engines that come to mind in North America that use a VGT Turbos are Porsche 911 Turbo engines.

I mean, my 2008 Mercedes diesel uses a variable geometry turbo.

In stock form it’s only good for about 261 hp and 460 ft lb of torque.

This one here only has 203k miles on it, works perfect, and gives me 27-28 mpg on the highway for a similarly sized vehicle.

Not a gasoline engine, but it’s been in service for almost 20 years now. Doesn’t seem to be that bad of tech. I’m sure actuators can fail.

 

[OneLonelyBurrito]

I mean, my 2008 Mercedes diesel uses a variable geometry turbo.

In stock form it’s only good for about 261 hp and 460 ft lb of torque.

View attachment 303864

This one here only has 203k miles on it, works perfect, and gives me 27-28 mpg on the highway for a similarly sized vehicle.

Not a gasoline engine, but it’s been in service for almost 20 years now. Doesn’t seem to be that bad of tech. I’m sure actuators can fail.

I don't think you can really compared a diesel VGT to a gasoline VGT. Believe gasoline VGTs run into material limitation from material creep because of the exhaust temperature being close to 1000C consistently.

 

[OneLonelyBurrito]

I thought PTWA was good - usually reserved for high performance engines?

I also always thought this type of spray liner was good. Like everything I'm sure there was some teething issues for the first OEMs to use it. But its becoming common type of cylinder liner to use now and I believe its being used on the 3.0L Hurricane already.

 

[demarpaint]

If this rumor is true it leads me to believe otherwise, which for me is disappointing. I was hoping the Hurricane 3.0L would find its way into the next generation Wrangler.

 

[OneLonelyBurrito]

If this rumor is true it leads me to believe otherwise, which for me is disappointing. I was hoping the Hurricane 3.0L would find its way into the next generation Wrangler.

I wouldn’t be surprised if the Pentastar sticks around as an option for awhile, but it seems like they are gonna be pushing this new Hurricane4 EVO.

But I doubt the 3.0L hurricane will make its way into the Wrangler if they can’t make it work in the Grand Cherokee. I hope they can figure it out for both vehicles but I’m not holding my breath.

 

[demarpaint]

I wouldn’t be surprised if the Pentastar sticks around as an option for awhile, but it seems like they are gonna be pushing this new Hurricane4 EVO.

But I doubt the 3.0L hurricane will make its way into the Wrangler if they can’t make it work in the Grand Cherokee. I hope they can figure it out for both vehicles but I’m not holding my breath.

The 3.6L will probably be around until the JL goes away. I'm not holding my breath either, but waiting patiently. I hope the 3.0 Hurricane is at some point an option in the Wrangler, but I now have my doubts. I'll probably continue to pass on the 4 cylinder turbo, and keep my 2016 JKR.

OTOH they might offer the 3.0 Hurricane in the Wrangler. They stuffed a Hemi in some of them, so maybe there is some hope.

 

[OneLonelyBurrito]

The 3.6L will probably be around until the JL goes away. I'm not holding my breath either, but waiting patiently. I hope the 3.0 Hurricane is at some point an option in the Wrangler, but I now have my doubts. I'll probably continue to pass on the 4 cylinder turbo, and keep my 2016 JKR.

OTOH they might offer the 3.0 Hurricane in the Wrangler. They stuffed a Hemi in some of them, so maybe there is some hope.

Yeah the question will be whether the next gen Wrangler only has this 2.0T or if they continue to offer the 3.6 for the non 4xe versions.

Like SC Maintenance mentioned, the people that have the 2.0L wranglers seem to like them.

 

[demarpaint]

Like SC Maintenance mentioned, the people that have the 2.0L wranglers seem to like them.

I'm sure it's a good engine, I'd rather have an I6. Time will tell.

 

[SC Maintenance]

The 3.6L will probably be around until the JL goes away

The 3.6 is a dinosaur (in a good way) - port injected naturally aspirated. I would guess it will stay under the new emission rules but they will have something ready for that change. Also everyone including stelantis wants global engines - its the best way to profit.

I'm sure it's a good engine, I'd rather have an I6

Maybe it won't fit? They never put a hemi in the JL either I don't think?

 

[demarpaint]

The 3.6 is a dinosaur (in a good way) - port injected naturally aspirated. I would guess it will stay under the new emission rules but they will have something ready for that change. Also everyone including stelantis wants global engines - its the best way to profit.

Maybe it won't fit? They never put a hemi in the JL either I don't think?

I agree. To clear up any confusion they did offer the 6.4L Hemi JLU Rubicon, possibly others. So I'm hoping at the very least the 3.0L Hurricane might be offered in the next generation 4 door Wrangler. Once again time will tell.

 

[Bighorn2500]

The 3.6 is a dinosaur (in a good way) - port injected naturally aspirated. I would guess it will stay under the new emission rules but they will have something ready for that change. Also everyone including stelantis wants global engines - its the best way to profit.

I really like the 3.6L, 155k on the wife's 2018 Durango with no issues. Can't complain about 22-23 MPG average commuting & 25+ MPG highway on cruise control.

Sister-in-law's 2019 Durango 3.6L had 241,393 miles on it when they recently traded it in and ran great with no issues. She got another 3.6L in her brand-new Durango as well.

Give me a port injected naturally aspirated engine any day over these turbo direct injected engines.

 

[ARCOgraphite]

Looks like Jeep is getting ready to launch the 2026 Jeep Grand Cherokee with a new engine option. This is all rumors right now, since they haven't officially announced anything yet. Forum Post from Jeep Garage

Looks like the engine is gonna be named Hurricane4 EVO.
Assuming it retains the 2.0L displacement.
Horsepower appears to increase from 270hp in the GMET4 to ~325hp.
Torque looks to increase from 295 -> ~332ft-lbs
Fuel efficiency claims to be better compared to the outgoing GMET4 along with lower criteria pollution emissions (NMOG+NMHC/NOx/CO/PM)
... .

Jeepers! That's an over-tuned grenade. Has anyone learned what we really we need is 1700-4500 rpm big torque. Peak HP = worthless in anything other than a competition engine. I am not liking the pentastar legacy fly-apart valvetrain in some GME.

My (leased) engine sample is way undertuned, and maybe if they didn't crush the marginal diameter exhaust pipe in half(!) to clear rear suspension it would breath easier. Duh! Way to go morons.