Stellantis Hurricane4 Engine Reveal

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.
From their chart it looks like it's at least match the torque if not above the 3.6L starting at 1500rpm. I would imagine this is gonna be a really pleasant and effortless feeling engine to drive around.
 
I don't understand why there is a spark plug in the main chamber too if the spark plug in the pre chamber ignites that fuel-air mixture which jets into the main chamber to ignite that main mixture.
The article says both are used under high load.
 
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.

I think I trust an electric water pump on a Toyota much more than a stellantis product ...

Why different from an electric fuel pump that has been used now for forty years?

When an electric fuel pump dies, the car just shuts off.
When an electric water pump dies, there's risk of significant engine damage.
 
I would imagine this is gonna be a really pleasant and effortless feeling engine to drive around.
I originally felt that way about the 2.3L in my Explorer (so a similar application to this) but lately it seems to be getting louder and more unrefined (at ~50k miles). Or at least my perception of it is changing. And there are similar complaints with the other crossovers in which turbo fours have recently been introduced. I'm actually thinking about getting a V6 crossover before they become unavailable.
 
I originally felt that way about the 2.3L in my Explorer (so a similar application to this) but lately it seems to be getting louder and more unrefined (at ~50k miles). Or at least my perception of it is changing. And there are similar complaints with the other crossovers in which turbo fours have recently been introduced. I'm actually thinking about getting a V6 crossover before they become unavailable.
Test drive an EV.
 
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.
 
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.
 
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.
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.
 
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.

Lol, it is Stellantis, someone probably just looked at it and said 'that'll do'.

I kid, I kid. Everyone else is just as bad.
 
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