Stellantis Propulsion Engineer Interview About Their New Hurricane Engine

[Wat_MPG]

Just checked, they take the same squirters (392/6.4L and 6.2L) so would just be more volume through the same orifices.

Specifically regarding the Demon:


What are your oil temps like? Do they stay close to coolant temp or do they get a fair bit higher?

Both my 6.2 and 5.7 have the same temps....hovered around 220 once fully warmed up and driven normally for a while.

The 6.2 saw 250 at times when driven hard. Don't really drive my 5.7 hard like the 6.2.

 

[OVERKILL]

Both my 6.2 and 5.7 have the same temps....hovered around 220 once fully warmed up and driven normally for a while.

The 6.2 saw 250 at times when driven hard. Don't really drive my 5.7 hard like the 6.2.

I drive my 6.4L pretty hard but can't really get the oil temps up to that level, which is expected, you've got like 525HP on me, lol.

 

[ZeeOSix]

Just checked, they take the same squirters (392/6.4L and 6.2L) so would just be more volume through the same orifices.

Anyone know if there's a difference in oil pump relief pressure between those pumps? The one with higher output also have a higher relief pressure?

 

[Wat_MPG]

Anyone know if there's a difference in oil pump relief pressure between those pumps? The one with higher output also have a higher relief pressure?

I don’t think there is. I see the same pressures at higher RPMs between my 5.7 and 6.2. Idle pressures are a different story.

 

[OVERKILL]

I don’t think there is. I see the same pressures at higher RPMs between my 5.7 and 6.2. Idle pressures are a different story.

They also spec two different grades of oil, which is another contributing factor there.

 

[chris719]

Oiling issues are caught early on, during the development stage.

Unless you’re Subaru.

 

[Plawan]

He talks about oil around 22:20. Amongst other things, he talks about the normal Hurricane calling for 0W-20 and the High Output calling for 0W-40 when both engines are essentially identical.

Makes me even lean more to filling my '23 Ram 5.7 with 5W-30 instead of 0W-20 that it calls for.

Engineer Deep Dive 3.0L Hurricane

That’s what I would do if I were you and is what I do.