BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > M3 (E90 / E92 / E93) > M3 vs....
 
GetBMWParts
Post Reply
 
Thread Tools Search this Thread
      02-29-2008, 05:36 PM   #1
chicagobimmerboy
First Lieutenant
chicagobimmerboy's Avatar
Italy
17
Rep
363
Posts

 
Drives: Un esotico Italiano ;)
Join Date: Jun 2007
Location: Chicago suburbs

iTrader: (0)

Post IS-F vs M3 power to the road

In a recent test by Automoblie Magazine the Lexus IS-F was able to put 333 horse power and 318 lb-ft of torque to its rear wheels on the dyno. Question is; what does the M3 achieve, I though it had an 8% powertrain loss or close to that. Anyone know for sure?

Be interesting to see what the C63 puts down.

http://www.automobilemag.com/reviews...art/index.html
Appreciate 0
      02-29-2008, 06:03 PM   #2
ChrisFastM3
Captain
ChrisFastM3's Avatar
25
Rep
676
Posts

 
Drives: E46 M3 vert w/ LOTS of mods
Join Date: Jan 2008
Location: Miami, FL

iTrader: (0)

It depends on the dyno. Some offer higher numbers and some not so much.
Appreciate 0
      02-29-2008, 06:52 PM   #3
SKBMW
Lieutenant Colonel
SKBMW's Avatar
No_Country
63
Rep
1,818
Posts

 
Drives: Bicycle
Join Date: Jan 2007
Location: 25 0′ 0″ N, 71 0′ 0″ W

iTrader: (0)

Send a message via MSN to SKBMW
"The IS-F is rated at 416 hp and 371 lb-ft of torque at the engine - and it delivered 333 of those horses and 318 lb-ft of torque to its rear wheels."



__________________
Appreciate 0
      02-29-2008, 07:15 PM   #4
Bennu
Colonel
Bennu's Avatar
United_States
33
Rep
2,257
Posts

 
Drives: BMW Coupe
Join Date: Mar 2007
Location: West Palm Beach

iTrader: (0)

Garage List
2014 BMW/M235i  [0.00]
This should be in the VS section
__________________
------------------------------------------------
Lack of money is not the problem. It is merely a symptom of what's going on inside of you! - T Harv Eker

Appreciate 0
      03-01-2008, 05:52 PM   #5
rai
Captain
rai's Avatar
United_States
13
Rep
649
Posts

 
Drives: M3 coupe with DCT
Join Date: Feb 2008
Location: maryland

iTrader: (0)

which one is quicker?

end discussion.
Appreciate 0
      03-01-2008, 06:29 PM   #6
consolidated
Lieutenant Colonel
consolidated's Avatar
38
Rep
1,744
Posts

 
Drives: F80 M3
Join Date: Jun 2007
Location: Texas

iTrader: (2)

Garage List
Quote:
Originally Posted by rai View Post
which one is quicker?

end discussion.
C63 at any on-ramp
M3 for rest of the world full of curves
Appreciate 0
      03-02-2008, 01:56 AM   #7
sayemthree
Brigadier General
sayemthree's Avatar
128
Rep
4,845
Posts

 
Drives: bmw
Join Date: Aug 2007
Location: usa

iTrader: (0)

the M3 should put about 368 HP to the wheels - 11 5 loss. Its also a M engine, not just a Yamaha hyped up engine from the Lexus 460.

the M3 has a much better HP per liter output than the Toyota
Appreciate 0
      03-02-2008, 04:32 AM   #8
malter2.0
Banned
United_States
21
Rep
908
Posts

 
Drives: em-funf
Join Date: Jun 2006
Location: SF Bay Area

iTrader: (0)

Garage List
Quote:
Originally Posted by BNR32 View Post
"The IS-F is rated at 416 hp and 371 lb-ft of torque at the engine - and it delivered 333 of those horses and 318 lb-ft of torque to its rear wheels."



i think it is clear thats at the hub. you can also see it from the picture.

realistically, e9x m3 will should put ~340-350whp
Appreciate 0
      03-08-2008, 01:44 AM   #9
ToothDoc
Second Lieutenant
3
Rep
236
Posts

 
Drives: 997.2 TTS, IS-F, X5M
Join Date: Aug 2007
Location: Chicagoland

iTrader: (0)

Some guy did a 344 HP to the wheels on an IS-F with only 700 miles. They did it in 5th gear (6th is 1:1). That's using Fujita's Dyno. You can search for it at one of the Lexus sites. My guess is that they'll both have similar dyno numbers as far as HP goes but torque will be higher on the IS-F. I'm expecting about 15% loss for Lexus and don't fool yourself.
Appreciate 0
      03-08-2008, 01:45 AM   #10
ToothDoc
Second Lieutenant
3
Rep
236
Posts

 
Drives: 997.2 TTS, IS-F, X5M
Join Date: Aug 2007
Location: Chicagoland

iTrader: (0)

I forgot to finish the last part - I doubt BMW makes a tranny significantly more efficient. Just previous generations of BMW understating HP and most other cars overstating HP led to the discepancies in transmission % issues IMO.
Appreciate 0
      03-08-2008, 09:48 AM   #11
bruce.augenstein@comcast.
Lieutenant Colonel
21
Rep
1,908
Posts

 
Drives: Legacy GT - 13.704@99.39
Join Date: Jul 2007
Location: Manheim, PA

iTrader: (0)

Quote:
Originally Posted by sayemthree View Post
the M3 should put about 368 HP to the wheels - 11 5 loss.
Why is this? Is this a hopeful opinion or fact based?

Quote:
Originally Posted by sayemthree View Post
Its also a M engine, not just a Yamaha hyped up engine from the Lexus 460.
Other than fanboyism, is there any practical significance to this?

As you may or may not know, Toyota knows a whole bunch about building good engines which last a very long time, and Yamaha, like Porsche, has a rich history of doing engineeering projects for other companies.

Quote:
Originally Posted by sayemthree View Post
the M3 has a much better HP per liter output than the Toyota
Other than fanboyism, is there any practical significance to this?

Nothing wrong with making a lot of power per liter, but it only matters when it actually matters. As discussed in another string, the LS3 Vette engine weighs about the same as the M3 engine, and occupies about the same amount of real estate while allowing a lower hood line because it's not as tall as the M3 motor. It also makes more power (and a ton more torque), and may in fact have better bsfc numbers. If this engine were installed in an M3, the M3 would be faster, handle a smidge better, weigh the same and almost certainly get better mileage when geared correctly for its torque curve (3.08s out back).

Not to take anything away from the M3 engine. I'm a fan myself, because it seems to break new ground in terms of how flat and wide the torque curve is.

The Lexus guys had their Lexus priorities in mind with the IS-F, and a stratospheric power curve isn't part of that scenario. It seems to be an admirable first effort, and in fact an admirable effort period.

Probably not a lot of crossover buyers between these two offerings, though. Each manufacturer is serving their constituency as best they can, and these are two very different constituencies, indeed.

Bruce
Appreciate 0
      03-08-2008, 08:38 PM   #12
gbb357
Captain
24
Rep
707
Posts

 
Drives: IS300
Join Date: Oct 2007
Location: New York

iTrader: (0)

^^ All very good points Bruce. I don't understand why people are dissing Yamaha. It has developed many high performance engines in the past and present, not to mention that they make high performance superbikes. In terms of the M3's engine having a higher output per liter, it does'nt seem to really matter that much since they're both equal in straightline performance and the ISF is able to equalized that with a much higher torque output. I'm guessing that in the handling department where the M3 will really show it's superiority. Hopefully we'll soon find out when one of these carmags or TopGear will compare these two.
Appreciate 0
      03-18-2008, 07:55 PM   #13
ZachV
Registered
0
Rep
2
Posts

 
Drives: 08' Cayman S, 93' Spec Miata
Join Date: Mar 2008
Location: San Diego

iTrader: (0)

Send a message via AIM to ZachV
Quote:
Originally Posted by sayemthree View Post
the M3 should put about 368 HP to the wheels - 11 5 loss. Its also a M engine, not just a Yamaha hyped up engine from the Lexus 460.

the M3 has a much better HP per liter output than the Toyota
It is from the LS600LH, not the 460. And the extra liter allows for 76 more TQ than the ///M.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Forum Jump


All times are GMT -5. The time now is 09:41 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST