motor

JiggaStyles09 · 09-08-2004, 08:25 PM

edmunds.com has done a road test of the new M5. since it was one of the first ones i have seen i figured i would post it up. i dont recall any other magazines having tested it before.

anways here is the link.

http://www.edmunds.com/reviews/roadt...irstdrive.1g.*

SilviaEvo · 09-08-2004, 08:42 PM

Sounds good reading now

sameerrao · 09-08-2004, 08:43 PM

Quote from above article

And you haven't even hit the button: The one that makes the M5 feel as if it's grown a turbocharger — the button that kicks you so hard in the pants that it makes that last top-speed run seem like a Sunday hop to your favorite bar for wine-soaked steaks and a side of couscous. The button is the power switch just forward of the gearshift lever. When the V10 is first fired up, it defaults to its 400-horsepower mode, a figure not coincidentally identical to the maximum output of the outgoing M5's 5.0L V8. And since the two cars weigh virtually the same, it means the new V10 M5 in its economy mode is as quick as the old V8 was at full speed.

Light up that power button and it feels as if the Bimmer has indeed grown two extra cylinders, though, in fact, what it does is let the M5's 10 individual throttle butterflies completely open (the reduced power mode restricts them to about 90 percent). That mile-long straight where the M5 previously just managed to top out at 161 mph? Well, in full 507-hp mode, it tops 167 mph with almost a half a mile to spare before that aforementioned braking zone.

I did not know about this button

And so is, of course, the SMG's launch mode. For those occasions when you just have to blow off that Camaro from a stoplight, the launch mode automatically sets the M5 for optimum drag-stripping. Similar to the system used in BMW's F1 racers, you first have to disable BMW's DSC (dynamic stability control) and select the sportiest of its manual-shifting modes. Then you hold the gearshift lever forward and mat the gas pedal. The car remains stationary with the engine revving at around 4,000 rpm until you release the gear lever.

By the time you do all this button jiggery the Camaro is already at the next traffic light

twboy1999 · 09-08-2004, 09:23 PM

thanx for the link

i am really suprised that they were able to drive the car

5vz-fe · 09-09-2004, 12:53 AM

Great reading, and now I was wishing on Discovery in steady of "Birth of a sports car - BMW 6 Series" , it is "Birth of a sports car - BMW M5".

Vansquish · 09-09-2004, 01:11 AM

But then what do you expect from an engine that's cast in the same facility as the BMW-Williams F1 motor and is the largest naturally aspirated engine I can think of that exceeds that Holy Grail of more than 100 hp per liter of displacement?

I'd have to say that while the M5 may well be a very impressive car, this guy doesn't have much between his ears. The Enzo has a 6.0L V12 that produced 660bhp...count them...that's 110bhp/L, the Mclaren F1 with a BMW engine produced 627bhp from 6.1L, that's roughly 104bhp/L until you consider the LM version with 680bhp...that's more like 111bhp/L. Those sound like bigger engines with better power/swept volume figures than the Beemer to me....

JiggaStyles09 · 09-09-2004, 01:23 AM

maybe he was talking about current production cars, but if not then he is definitly was not thinking too hard.

sameerrao · 09-09-2004, 01:58 AM

Originally Posted by Vansquish

But then what do you expect from an engine that's cast in the same facility as the BMW-Williams F1 motor and is the largest naturally aspirated engine I can think of that exceeds that Holy Grail of more than 100 hp per liter of displacement?

I'd have to say that while the M5 may well be a very impressive car, this guy doesn't have much between his ears. The Enzo has a 6.0L V12 that produced 660bhp...count them...that's 110bhp/L, the Mclaren F1 with a BMW engine produced 627bhp from 6.1L, that's roughly 104bhp/L until you consider the LM version with 680bhp...that's more like 111bhp/L. Those sound like bigger engines with better power/swept volume figures than the Beemer to me....

Yeah that faux paux struck me too

Vansquish · 09-09-2004, 02:08 AM

I forgot at least one more recent one as well...the Carrera GT is NA, and makes 612bhp from 5.7L, come to think of it, the Diablo SE30 Jota was pretty close to that too...I seem to recall something in the neighborhood of 565 or 570bhp from that 5.7L as well. The Gallardo is close too, but falls just short of the mark.

JiggaStyles09 · 09-09-2004, 03:18 AM

actually the jota produced 595hp from its 5.7 liter V12. it is extremely rare though, i dont even think it was street legal. but the gallardo isnt that exactly 100hp/L 5.0 liters 500hp?? yea lol that guy wasnt thinking at all.

Wutputt · 09-09-2004, 05:53 AM

Originally Posted by sameerrao

I did not know about this button

Well like the article explained this button switches between P400, P500 and Sport mode. It actually changes the way the input of the pedal is transformed into the actuation of the butterflies. If you start the engine, it's in default P400 mode, were the driver will only have about 400 bhp. The butterflies won't open fully (apparently max 90%).
Push the power button once, and the engine goes to P500 mode. Butterflies can now open fully to 100%. This is actually more the 'normal' mode. If you push it one more time, the engine will go into sport mode. What happens is the butterflies are opened a little bit more then the driver asks. As a result the response of the pedal is more directly and the power is better controllable when the butterflies are almost fully opened.

I can upload a illustrating graph if you want.

mindgam3 · 09-09-2004, 07:24 AM

I reckon this is gonna be a great car.....

As for bhp/litre, notice how all those cars you mention are supercars.... this isn't and costs a fraction of the price.

To get any engine over 100hp/litre is an achievement, but this 5 litre V10 also has to fit under the bonnet of a 5 series.... compared to most other +100 hp/litre cars this is a relatively small space. Either way its a great engine and i look forward to some "proper" reviews from the bigger names to see how this car is on the whole

mindgam3 · 09-09-2004, 07:25 AM

Originally Posted by Wutputt

Originally Posted by sameerrao

I did not know about this button

Well like the article explained this button switches between P400, P500 and Sport mode. It actually changes the way the input of the pedal is transformed into the actuation of the butterflies. If you start the engine, it's in default P400 mode, were the driver will only have about 400 bhp. The butterflies won't open fully (apparently max 90%).
Push the power button once, and the engine goes to P500 mode. Butterflies can now open fully to 100%. This is actually more the 'normal' mode. If you push it one more time, the engine will go into sport mode. What happens is the butterflies are opened a little bit more then the driver asks. As a result the response of the pedal is more directly and the power is better controllable when the butterflies are almost fully opened.

I can upload a illustrating graph if you want.

i think he understands what it does..... he just didnt know it was going to be on the car, like myself

sentra_dude · 09-09-2004, 11:34 AM

Pretty cool article, and but I don't know about all those electronic thingies on the car. The launch control does sound pretty cool, but why not just put a standard manual on the car...

Does anyone know if BMW will offer a standard 6spd manual on this car, or will it be SMG only?

Originally Posted by Wutputt

Originally Posted by sameerrao

I did not know about this button

Well like the article explained this button switches between P400, P500 and Sport mode. It actually changes the way the input of the pedal is transformed into the actuation of the butterflies. If you start the engine, it's in default P400 mode, were the driver will only have about 400 bhp. The butterflies won't open fully (apparently max 90%).
Push the power button once, and the engine goes to P500 mode. Butterflies can now open fully to 100%. This is actually more the 'normal' mode. If you push it one more time, the engine will go into sport mode. What happens is the butterflies are opened a little bit more then the driver asks. As a result the response of the pedal is more directly and the power is better controllable when the butterflies are almost fully opened.

I can upload a illustrating graph if you want.

We all read the article, no need to re-write what the article said...

Vansquish · 09-09-2004, 03:28 PM

Originally Posted by JiggaStyles09

actually the jota produced 595hp from its 5.7 liter V12. it is extremely rare though, i dont even think it was street legal. but the gallardo isnt that exactly 100hp/L 5.0 liters 500hp?? yea lol that guy wasnt thinking at all.

So far as I am aware, the Gallardo makes exactly 1bhp more than the original Diablo...i.e. 493bhp. Of course you're correct about the SE30 Jota, I don't know why I was bringing up the Diablo GT's numbers (less impressive from a larger engine hehe). To my understanding, the Jota was street legal though.