S58 engine preview

Oct 18, 2016
6,847
AZ
#1
This video reveals quite a bit of information about what we can expect and there may even be a few hidden clues in here that haven't been confirmed yet.

It looks like the S58 will not be using the integrated exhaust runners like the B58 which is great news for anyone looking to upgrade.


Specs from the X3 M:

Power Unit Config/No of cyls/valves In-line / 6 / 4
Engine technology M TwinPower Turbo technology with two mono-scroll turbochargers, High Precision Injection, VALVETRONIC fully variable valve timing and Double-VANOS variable camshaft timing
Effective capacity cc 2993 Stroke/bore mm 90.0 / 84.0
Compression ratio :1 9.3
Fuel RON 98 (min. RON 95)
Max output kW/hp 353 / 480 at rpm 6250
Max torque Nm 600 at rpm 2600 – 5600
Screenshot_20190213-084552_Chrome.jpg


hub?
Screenshot_20190213-084654_Chrome.jpg


Screenshot_20190213-084604_Chrome.jpg


Dedicated exhaust runners
Screenshot_20190213-085541_Chrome.jpg

1550116868096.png

1550116921578.png


Intake pipes in front, wonder if A2A conversions become a thing?
Screenshot_20190213-084851_Chrome.jpg


Screenshot_20190213-090750_Chrome.jpg


What else?
 
Last edited:
Oct 18, 2016
6,847
AZ
#2
The air comes in and down around the front then up into the air to water cooler then into the engine. I'd expect to see a lot more creative intake boxes this time.
 
Oct 18, 2016
6,847
AZ
#6
Looks like there is room for a third HPFP, depending on what is already there
1550110298587.png


You get a really good look at how these pumps interface with the camshafts:
1550116822450.png


Each exhaust port is clearly shown, looks like the head can be ported as well:
1550114176802.png
 
Last edited:
Oct 18, 2016
6,847
AZ
#7
"Effective capacity cc 2993 Stroke/bore mm 90.0 / 84.0 "

So, undersquare and slightly less displacement compared to the shorter stroke of the S55? (89.6 bore/80 stroke)
 

jyamona

Lieutenant
Free Vendor
Nov 7, 2016
794
Philly
#8
Looks like there is room for a third HPFP, depending on what is already there
I imagine something is already filling that spot. Regardless, that spot is not in line with the other two pumps.

Can what type of lobe is it? Looks perhaps triangular, similar to the mini-cam in the vac housings currently.
 
Apr 4, 2018
79
#10
Good to see they stuck with a mechanical water pump. Also has a small electric pump to run water to the turbos when the motors shut off. I'm still on the fence with the rear timing drive . You won't have to worry about spun crank hubs anymore though.
 
Oct 18, 2016
6,847
AZ
#11
I imagine something is already filling that spot. Regardless, that spot is not in line with the other two pumps.

Can what type of lobe is it? Looks perhaps triangular, similar to the mini-cam in the vac housings currently.
It looks like the camshaft itself is missing the lobe as well?
1550218007851.png
 
Oct 18, 2016
6,847
AZ
#12
Good to see they stuck with a mechanical water pump. Also has a small electric pump to run water to the turbos when the motors shut off. I'm still on the fence with the rear timing drive . You won't have to worry about spun crank hubs anymore though.
So, its all internal somewhere here?
1550218319373.png
 
Apr 4, 2018
79
#13
So, its all internal somewhere here?
View attachment 22751
Yeah , that black cover is hiding the timing chain vanos gears. This will suck to service, but it's suppose to be a "lifetime" item. Hopefully they fixed whatever rear cam drive issues they were having with the diesel n47 motors that first used this setup. The timing chains were ( still are ) stretching and breaking needing service. Hopefully that's been addressed. This is one of the things that scared me about the b58 and now the s58 has it. Only time will tell. I wonder where they put the solenoids for the exhaust and intake cam.
 

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