Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > General > BMW News
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 04-30-2009, 02:51 PM   #1
Gamite
Moderator
 
Gamite's Avatar
 
Join Date: Dec 2001
Location: Toronto
Posts: 21,083
Twin Turbo V8 Dynos at 391rwhp and 434lb-ft of torque



Dynamometers are notoriously tricky beasts, and comparing between systems, individual examples and even on the same machine across time can be hard or impossible. But they do serve to give a rough ballpark figure, and one of the latest tests of a 2009 BMW 750i reveals it's in a very interesting ballpark.

The numbers put up by the car - an Edmunds long-term test vehicle - revealed wheel horsepower and torque figures very close to the claimed bench numbers. Running the 4.4L twin-turbo V8 on a Dynojet chassis dyno, they found it rated at 391hp (292kW) and 434lb-ft (588Nm) of torque. The peak RPM figures also differed slightly from BMW's claimed maximums, with horsepower arriving about 300rpm early at 5,200rpm and torque coming on 1,500rpm late at about 3,300rpm.

Still the torque curve is satisfyingly flat from roughly 2,500rpm to 4,600rpm, providing lots of punch in the mid-range, where it will be most easily appreciated on the street.

But no one's doubting the car's performance - in fact, quite the opposite. Posting numbers that reflect crank power of closer to 450hp (335kW) and 510lb-ft (691Nm) of torque, the 750i is, despite its huge size and imposing looks, a classic sleeper - quick enough to rate 5.2 seconds in the 60mph dash and 13.5 seconds at 103.7mph in Edmunds' testing.

The turbocharging surely helps to produce this flat power curve and impressive speed, but with such conservative ratings from the factory, you have to wonder how the 536hp-rated V12-powered 760i would fare if strapped to a rolling road.

Source: http://www.motorauthority.com/2009-b...den-power.html
__________________
www.gamite.net

Gamite is offline   Reply With Quote
Old 04-30-2009, 03:11 PM   #2
Seven
Gimme The Keys
 
Seven's Avatar
 
Join Date: Oct 2006
Location: GTA
Posts: 681
Awesome!
__________________
Seven is offline   Reply With Quote
Old 04-30-2009, 05:25 PM   #3
DAM
Trinational 951
 
DAM's Avatar
 
Join Date: Jun 2002
Location: the M5V
Posts: 2,932
Interesting... Instead of recessionary pricing, bmw gives recesssionary bonus hp
__________________
You drive to work? I work to drive.

Last edited by DAM; 04-30-2009 at 05:28 PM.
DAM is offline   Reply With Quote
Old 05-01-2009, 02:51 AM   #4
AMG_POWER
500HP Member
 
Join Date: May 2002
Location: Toronto, Canada
Posts: 9,691
tune that byatch... I bet you can make it even sweeter with some tune... New 550 is going to be one fun family sedan.
AMG_POWER is offline   Reply With Quote
Old 05-01-2009, 08:52 PM   #5
AMG_POWER
500HP Member
 
Join Date: May 2002
Location: Toronto, Canada
Posts: 9,691
I was at BMW autohaus and looked around a 750 wow... what a nice piece of BMW... What I found very very strange is even tho it was a long version the interior room wasnt as big for some odd reason... i'm not sure what they did but it seems that roof line is now lower and it seems little bit tighter inside... otherwise its a dream...

On the sad note, some Russian sales woman came up to me and started talking complete nonsense, I just dont understand how people like that sell cars... She was saying how great that engine is in 750 and how they sell 4.8 x5 with that engine for last 2 years... I was like wtf lady... and made her go review all the specs of all vehicles again lol... I'm so annoyed at people who sell cars and dont really know what they talking about. at the end she said "you are right, but soon it will come with M perofromance package and all the engine work" I was like WTF.
AMG_POWER is offline   Reply With Quote
Old 05-02-2009, 04:59 AM   #6
SpoolinS6
6th Gear Member
 
SpoolinS6's Avatar
 
Join Date: Oct 2002
Location: Canada
Posts: 6,537
SOft....
__________________
1995 Audi S6
HI BOOST
SpoolinS6 is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 06:45 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.