Just_me

M3 V8
280nm@1800 rpm
340nm@2000 rpm
380nm@3000 rpm
400nm@4000 rpm
400nm@6000 rpm
390nm@7000 rpm
370nm@8000 rpm
350nm@8400 rpm



M5 V10
390nm@2000 rpm
430nm@3000 rpm
460nm@4000 rpm
520nm@6000 rpm
440nm@8000 rpm
420nm@8250 rpm



(Correct me if I read the diagram's wrong)

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klier

Looks like the new V8 is the better, or at least more refined engine?

Can't wait!!!!

swamp2

M5 V10 vs. M3 V8 vs. others (LONG)
Overall I am very pleased with the engine specs and performance. Perhaps it will be slightly under rated as well but I would not count on much here. Even though the car is sure to be a screamer and to trounce the competion given these four key points: power to weight, awesome redline, gearing and (eventually 7sp SMG or ZSG). For those of you whining about not getting 430-450 hp look at the F360 specs below (hp and torque)!! And PLEASE try to consider the whole package not just one number!

I think the most impressive things BMW achieved are the redline (second only to Ferrari (and maybe a single year of the S2000)) and the really broad, flat torque curve. The latter is especially impressive given the quite peaky torque curve of the engine it is based on, the M5. My largest disappointment has nothing to do with specs but it is the lack of direct injection. This would have surely helped hp, torque and mpg. Where did that nice smooth, flat, broad torque curve come from then? Perhaps more differences in the two designs will surface later but now we don't really have much.

-Improved header design(?): From pictures the headers look smoother (less crimping) and routed differently with some very long headers in what appears to be an attempt to have all equal lengths before the 4 into 1.
-VANOS: BMW claims V8 uses dual chain drives wherea M5 uses a single chain (pictures seem to contradict this - I clearly see two chains on both).
-VANOS: V8 gets a step motor vs. helical gears on V10 - this gives faster and more precise VANOS control.
-VANOS: V8 uses low pressure oil, M5 a high pressure system to get the fast precise control (I think I recall a service issue with the M5 VANOS lines...).

That is all I could find. Seems like a lot of work was done on the breathing systems and the benefits to the torque curve really paid off.

So in the end if you examine the RS4, E60 M5 V10 and E92 M3 V8 engines the real innovators were the RS4 and M5, the M3 V8 is just a very "productive refinement".

Some specs of my choosing, with a rough "ranking":

335i:.....419 lb, 3.0 l, 300 hp, 300 ft lb, 100 hp/l, 7000 rpm
F360:....406 lb, 3.6 l, 400 hp, 275 ft lb, 112 hp/l, 8500 rpm
RS4:.....457 lb, 4.2 l, 420 hp, 317 ft lb, 100 hp/l, 8250 rpm
M3 V8:..445 lb, 4.0 l, 420 hp, 295 ft lb, 105 hp/l, 8400 rpm
F430:....414 lb, 4.3 l, 483 hp, 343 ft lb, 112 hp/l, 8500 rpm

Ferrari is still the king! BMW should have given us 8600 rpm just for one-upmanship.

shonguiz

Ferrari is the king of what ?

Just_me

moved swamps post to this thread since we compare m3 to m5 here

martinbo

Nice post swamp2 - can't disagree with any of it...

ILC32

Speaking of the whole package, what is the weight of the 360? 1390 kg (3064 lb)

When did wanting more engine performance become whining?

EMpower

Wonder how the bi-turbo 335i compares on torque curve.

Just_me

All I know is that the engine develop 400nm from 1300 rpm to 5500 rpm.

Imhotep Evil

I'm sorry but you're comfusing BMW marketing output/ with actuall/more real world output.

This has been the case for cars like the E30 M3 to the 335i, with the engines dyno-ed showing (way) more HP the the claimed specs. That's almost a BMW trademark.

As for high reving reving, well a derestricted S85 can go to 10000 RPMs, even beyond, and will output ~535-540 HP (but not at such ridicolous RPMs).

Sorry, apart from the Enzo engine (12/13 years after the S70/2 ) Ferrari isn't on the same page.

The one engine I'd be interested to know, is the new Caparo 3.5 V8.

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