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Inside the Tornado

20K views 83 replies 43 participants last post by  AC TC  
#1 ·
Speculation. The new FCA in-line six-cylinder — reportedly dubbed “Tornado” — will have to fit into some tight spaces. Because of that, we don’t expect the block to be a “four-cylinder with two more holes tacked on.” Sources expect a displacement of just under 3.0 liters (versus the Hurricane Four’s just-under-2.0 liters). To reduce the […]
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#14 ·
If FCA thinks FWD does not need the inline 6, they are, once again, not understanding the North American market.
 
#15 ·
.

Lancia hint, eh?

So, maybe, possibly, a Straight-Six implementing a rather narrow-V . If that's the case, that seems to be a prudent application; specifically since if they'd want it to be capable of use in Transverse or North-South architectures.

( Spooky, though ... they must've been recording my sleep-talking o_O ).

{ I attempted 4x this morning trying to put this simple message up, but it only churned at that time each time I tried }
 
#16 ·
I measured the engine in a 2.4 500X. I think the six would fit into transverse settings if they moved stuff around a bit.
 
#19 ·
I know it's more complicated than “gee, there’s an empty space here” and that it’s very hard to do. But I also know the engineers are very very clever. I doubt the six would ever be used in something like the Compass, but it might work in something wide like the Pacifica. I do think the main goal is not mainstream cars but large cars and high end Jeeps and Rams and such.
 
#21 ·
Pulling off a super modern inline six would technically and profitabilitywise be a major product building acheivement. If V8's must go away then a charged inline six would be the next best thing. If the market stays like it is then having the most advanced six out there would also be quite a coup in Alfas, Dodge, Jeeps, even Rams and Maserati. How about a Chrysler 300 with a 400 hp inline six? A 600 horsepower Challenger SRT inline 3.6? How about diesel inline sixes for Ram and Wrangler.
 
#31 ·
Should be heavier than a v6 due to a longer block and crank.
- on the other hand it has just one camdrive and the single longer head shoud be lighter than the 2 v6 heads.
- on the other is the fact that the inliner needs to have a stiffer block and crank, read heavier..
- on th...
Actually i know of no inliner thats considered compact, light and fuel efficient.
- ok the slant was actually quite a fuel sipper but thats it.
I can only se one use for a small inliner and that is for use in highend sedans were its considered exotic..rwd only.
 
#33 ·
I would not be surprised if it leaned a bit, really. But I WOULD be surprised if they called it a slant six.

That was a very durable engine but rarely particularly efficient “as produced” because they were cheap with the carb and such.
 
#38 ·
I would assume a twin turbo version’s goal would be around 400 hp. I do not have that information. That's an assumption based on the ancient five year plan chart and people saying it's intended to replace the Hemi in most places. I suspect 380 hp would also be reasonable if the torque curve was good.
 
#41 ·
#43 ·
Should be heavier than a v6 due to a longer block and crank.
- on the other hand it has just one camdrive and the single longer head shoud be lighter than the 2 v6 heads.
- on the other is the fact that the inliner needs to have a stiffer block and crank, read heavier..
- on th...
Actually i know of no inliner thats considered compact, light and fuel efficient.
- ok the slant was actually quite a fuel sipper but thats it.
I can only se one use for a small inliner and that is for use in highend sedans were its considered exotic..rwd only.
.

Your input is duly noted. Thank you -

We'd also have to consider that it is a slight 'Left Turn' from the prototypical Straight-Six/Inline Six inasmuch as it is possibly reportedly of the Staggered cylinder Inline variety.

If the Block is dictated by old school standards, i.e. Iron, then it could easily be a heavy-ish engine. However, I was also wondering if recent metallurgy has yielded a strong, but lighter-weight substance which could be a worthy cost-effective stand-in for the traditional stuff to give us a more advanced block. I can only hope. ( I know nothing about these, other than they've been used as block material at some point, and are lighter than straight-up Iron : Aluminium/Aluminum, Magnesium, CGI Iron ). Pro's and Con's to each, no doubt.

Hollow Crank? Intake and Exhaust manifolds?

.
 
#49 ·
I am convinced that the Tornado will end up being significantly less expensive to produce than the equivalent Pentastar.
I would assume that to be the case.

As a side note, I’m not at all convinced it’ll be a W.
 
#46 ·
Forgive my ignorance but wouldn't a slant 6 be ideal for packaging concerns to keep the hood low? With a beefy alternator, and plenty of electric drive accessories (compressor/ water pump/ steering) I feel like you can configure the packaging quite a bit and still keep the profile low.
 
#50 · (Edited)
Barra 325T FGX Sprint
The final variant of the 4.0-litre I6 cylinder turbo-petrol engine featured in the FGX XR6 Turbo Sprint. The engine employs an over-boost feature for 10 seconds when optimal atmospheric conditions are met when under full throttle, boosting power & torque to 370 kW and 650Nm.

Power: 325 kW (436 hp) @ 6000 rpm
Torque: 576 N·m (425 lb·ft) @ 2750 rpm
Ford Barra engine - Wikipedia (at https://en.wikipedia.org/wiki/Ford_Barra_engine#Barra_325T_FGX_Sprint )

Point being, I think 400 is on the very low side of what to expect from this engine. 450HP / 450 ft-lbs should be expected, at least in 5.7 Hemi (and maybe even higher, if 6.4) replacement form.
 
#51 ·
400 easy; 450 is probably the ceiling, though. Scaling the 4-cylinder Alfa engine's outputs by a factor of "up to 1.5x" would be a good indicator of the high-performance tune...

So, with that in mind, I'd imagine you're looking at 360, 400, 450; any closer to 500 is unlikely (technically possible, but where's the market?). For hybrids, I think the better solution will be a large electric motor for low-speed torque, coupled with a turbo four for cruising duties.