Stellantis Hurricane4 Engine Reveal

[OneLonelyBurrito]

The article mentioned that the cylinder bore wall thickness was increased substantially. Presumably they did some analysis of how thick the bore walls needed to be to ensure dimensional stability.

I've been involved in turbocharged engines for decades. 45 years ago it was common to reliably reach 300HP from iron block 4 cylinder, 2 valve street engines. With good design, this kind of engine output has long been possible. Heck, Ford's 350HP 2.3L Focus RS is in this category. And Jaguar's 300HP 4 cylinder is fairly close too.

I don't like the open deck design though. 30+ pounds of boost requires a very stable block and head configuration. Like some posts above, I have concerns that key details will be overlooked.

You can see how thick the cylinder wall are in this picture from Motortrend.

What grade fuel will this engine require?

I think its gonna 87 and above is required but 91 recommended for optimal performance.

 

[addyguy]

The pre-chamber design sounds exactly like Honda’s ‘CVCC’ system that came out…wait for it…50 years ago!
Great job re-cycling a half-century old technology and presenting it as something new!
Since they also re-use old names, can we put this in a car and call it the Matador?

 

[Exhaustgases]

I've been involved in turbocharged engines for decades. 45 years ago it was common to reliably reach 300HP from iron block 4 cylinder, 2 valve street engines. With good design, this kind of engine output has long been possible. Heck, Ford's 350HP 2.3L Focus RS is in this category. And Jaguar's 300HP 4 cylinder is fairly close too.

I don't like the open deck design though. 30+ pounds of boost requires a very stable block and head configuration. Like some posts above, I have concerns that key details will be overlooked.

Very good post.

I'm just curious how many weeks after introduction when the first one finds its way to Eric on the I Do Cars tear downs.

 

[OneLonelyBurrito]

Looking at the articles more this evening, it looks like it has one feature everyone here clamors for, an engine oil dipstick.

 

[goblin]

First the billboards along the NJ Turnpike advertising breast reduction as a good thing, then a four cylinder replacing a six cylinder advertised as another good thing.
Reporting live, from a world which no longer makes sense.

 

[BMWTurboDzl]

I've been involved in turbocharged engines for decades. 45 years ago it was common to reliably reach 300HP from iron block 4 cylinder, 2 valve street engines. With good design, this kind of engine output has long been possible. Heck, Ford's 350HP 2.3L Focus RS is in this category. And Jaguar's 300HP 4 cylinder is fairly close too.

I don't like the open deck design though. 30+ pounds of boost requires a very stable block and head configuration. Like some posts above, I have concerns that key details will be overlooked.

Vrooom

https://www.autoevolution.com/news/...der-built-by-bmw-during-the-1980s-177344.html

 

[SumGuy]

I'll take the 3.5 in any of my M's. Same MPG.

 

[LeakySeals]

When an electric fuel pump dies, the car just shuts off.
When an electric water pump dies, there's risk of significant engine damage.

Reminds me of a time when people doubted efans

 

[YZJB]

I think those are auxiliary to keep the turbo cool correct?

For actual primary cooling pump, Prius has had electric water pump since day 1. Camry since 2018. Rav4 since 2019. The one on my Rav4 even looks very easy to replace, which is a bonus if it ever needs to be.

First two generations of Prius had belt driven water pumps not electric.

 

[SwampSurvivor]

Reminds me of a time when people doubted efans

I still do

 

[djkurious]

I hear a tick...

 

[daves87rs]

I remember when the 2.7 V6 came out in 1998 and Chrysler PR was bragging about how they went from the first lines on a CAD model to full production in 18 months. Which was true but development was incomplete and the product was unreliable.

I will give the boys and girls credit for maintaining some bits of equilibrium in their engineering department through constant organizational tear-ups AMC/Chrysler/Daimler/Cerberus/Fiat/Stellantis.

It's difficult and expensive to demonstrate long term durability on powertrains. Everybody seems to be going with small displacement and a lot of turbo boost. We'll know in 10 years or so.

Yep, and so far not well.

Turbos actually need frequent oil changes to keep the engine happy- and for folks need to stay up on the maintenance.

But for most folks who treat their vehicle like their washer ( rode hard and left wet) the engines end up with a much shorter life. You only have to look at the 1.5 ecoboost and 1.4 Ecotec to see how many late model Ford and Chevys with multiple engines or in the junkyard……

 

[thescreensavers]

It looks heavy , no mention of engine weight

 

[Snagglefoot]

That's just the peak. From the chart it looks like 80 percent is on tap at just over 2,000 RPM, courtesy of that VGT. It's all about area under the curve.

Exactly. Turbo engines need to be evaluated by their entire torque curve, not just the peak torque number like in a normally aspirated engine.

 

[GW.]

The 3.6 had its faults but it was one of the last non DI, non turbo options….

 

[rijndael]

I hear a tick...

And smell the oil leak from the filter housing/stand?

 

[anderson]

First the billboards along the NJ Turnpike advertising breast reduction as a good thing, then a four cylinder replacing a six cylinder advertised as another good thing.
Reporting live, from a world which no longer makes sense.

does any man agree with that lol

 

[Allaned]

The 3.6 had its faults but it was one of the last non DI, non turbo options….

All this has some importance for me. We are in the market for a new Grand Cherokee. Now the debate is to get one of the 3.6 L while available or wait for this 2.0 L T .

 

[GW.]

All this has some importance for me. We are in the market for a new Grand Cherokee. Now the debate is to get one of the 3.6 L while available or wait for this 2.0 L T .

I test drove a GC when shopping for my Wrangler. Very nice vehicle and the 3.6 felt fine to me! Also got the 3.6 in my Wrangler.

 

[tcp71]

324 hp is so 2010....

https://www.caranddriver.com/news/a27813840/mercedes-amg-m139-four-cylinder-engine-specs/