Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

Reply
 
Thread Tools Display Modes
  #51  
Old 03-13-2008, 02:59 PM
void.crusader void.crusader is offline
Registered User
Location: VA
 
Join Date: Feb 2008
Posts: 30
Mein Auto: '03 Altima 3.5 SE
Quote:
Originally Posted by jsc View Post
Well, the cheaper (than a GT3) M3 CSL is close in specific output at 109.4bhp /litre @ 7,900 RPM, but produces 84.1 lb-ft /litre @ 4,900 RPM compared with 82.8 lb-ft /litre for the GT3 at a much loftier 5,500 RPM, so the M3 CSL S54 engine has a beefier torque curve than the GT3 engine for it's capacity, allowing more power to be extracted at a lower RPM (for it's capacity), so requiring it to be revved less.
What octane fuel?
Is it certified for US?
Is it on sale now?

Btw, one way to estimate engine efficiency is ~ (peak hp) / (peak rpm * liters).


Quote:
Originally Posted by chemgeek View Post
Those are very decieving actually.
Post the better ones. And careful with large quotes, please.
Reply With Quote
  #52  
Old 03-13-2008, 03:12 PM
chemgeek chemgeek is offline
Officially Welcomed to the 'Fest
Location: Laguna, CA
 
Join Date: Jan 2008
Posts: 326
Mein Auto: 2008 335i Sedan
Quote:
Originally Posted by void.crusader View Post
What octane fuel?

Post the better ones. And careful with large quotes, please.
Never said I had better ones. Are there ones similar to those that have a top view? I think both angles need to be taken into account. Looks like the Infiniti (I have never looked under the hood of one) has a huge cooling system quite a ways in front of the engine block. Anyone have any idea how much liquid that holds out in front? I know very little about Infiniti.
__________________
2008 335i Sedan/Premium/Sport/Ipod-USB/Parking Sensors/Nav/Graphite on Black w/ Walnut
Reply With Quote
  #53  
Old 03-13-2008, 03:26 PM
Emission's Avatar
Emission Emission is offline
Automotive Monomaniac
Location: North of Los Angeles, CA
 
Join Date: Dec 2001
Posts: 10,692
Mein Auto: Schnelle Autos
Those are pretty good cross-section drawings.

Infiniti G35 is still a bit more nose-heavy when you look at the numbers on a scale. Infiniti tosses in an aluminum hood to help keep the weight down in the front end (at least they used to). However, I still feel the G37 has more oversteer (rear weight bias feel) than the 335i on the track. I've said before, the G37 - in stock configuration - is a track star.

Hey void.crusader, what Nissan do you drive?

- Mike
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
Reply With Quote
  #54  
Old 03-13-2008, 03:48 PM
void.crusader void.crusader is offline
Registered User
Location: VA
 
Join Date: Feb 2008
Posts: 30
Mein Auto: '03 Altima 3.5 SE
Quote:
Originally Posted by Emission View Post
Those are pretty good cross-section drawings.

Infiniti G35 is still a bit more nose-heavy when you look at the numbers on a scale. Infiniti tosses in an aluminum hood to help keep the weight down in the front end (at least they used to). However, I still feel the G37 has more oversteer (rear weight bias feel) than the 335i on the track. I've said before, the G37 - in stock configuration - is a track star.

Hey void.crusader, what Nissan do you drive?

- Mike
Drawings from R&T magazine anyway.

2003 Altima 3.5 SE, 116K without a hitch. Love VQ.
Reply With Quote
  #55  
Old 03-13-2008, 03:55 PM
jsc's Avatar
jsc jsc is offline
Officially Welcomed to the 'Fest
Location: Calgary
 
Join Date: Sep 2003
Posts: 1,441
Mein Auto: E85 M-Roadster, E82 135i
Quote:
Originally Posted by void.crusader
What octane fuel?
Is it certified for US?
Is it on sale now?

Btw, one way to estimate engine efficiency is ~ (peak hp) / (peak rpm * liters).
.
Both on RON 98 (Euro equivalent to (MON+RON)/2 AKI 94). As you quoted the spec for the Euro GT3, the comparison was with a Euro M3 CSL. M3 CSL is not on sale at the moment as it is an E46 model, but it was a 911 competitor (basically a model that is just out of production with a stronger engine for it's capacity than the current Porsche). Really just an illustration that specific output for BMW engines is just as good as for Porsche.

BTW, another way (of many ways) to estimate engine output efficiency (or perhaps capability is a better word here) is (torque under curve) / litres. Or better expressed as (average torque * RPM range) / litres. This measurement will take into account any non-linearity of the power curve that peak measurements don't take into account.

Last edited by jsc; 03-13-2008 at 03:58 PM.
Reply With Quote
  #56  
Old 03-13-2008, 03:56 PM
redadair's Avatar
redadair redadair is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Dec 2006
Posts: 721
Mein Auto: 07 335i Sedan (Mieke)
Quote:
Originally Posted by void.crusader View Post
I mean S54. Sierra-Five-Four at E46 M3. Engine of Damocles. The one you mention in your post with "M3 3.2L at 333HP".

http://www.google.com/search?hl=en&s...re&btnG=Search



Awards is good and all, but Porsche certainly know something others aren't.

911 GT3:
3600cc, 409hp @ 7600, 298 lb-ft @ 5500
They didn't rev it that much, didn't force-fed it, didn't even put DI. Still, somehow they got 113.6 HP per liter. Impressive engineering should be involved to get this.

Okay, may be GT3 is a bit over the top, but even lowly Caymans are putting very good HPs per liter without over-revving.
I have a few questions for you. Do you own a BMW? ('03 Altima 3.5 SE)

If not are you a TROLL?

If you are a TROLL why are you here?

http://www.bimmerfest.com/forums/sho...38&postcount=1

Root Cause, BMW fixed all, and extended the warantee. All good in the end.

"BMW has been investigating cases of damage to the connecting rod bearings resulting in engine failure. After intensive analysis, we can inform you that we found the root cause and have also tested and confirmed our countermeasures.

The problem has been identified as contamination of the engine lubricating system during assembly in combination with unfavorable tolerances in the engine oil pump for the M3 coupe/convertible produced from October 2001 through February 2002. These cars will require replacement of the engine oil pump and as a precautionary measure, replacement of the connecting rod bearings."

Red
__________________

2011 1M
Aug 8th ED
MADA drop off 8/18/11
Arrived at Port 9/21/11
Re-Delivery 10/10/11



07 335i Sedan
May 4th ED
MADA drop off 5/11/07
Arrived at Port 6/11/07
Re-delivery 6/27/07

04 330i ZHP
11 Mini Cooper Clubman S Hampton Package
72 BMWtii drove till dead - Remains one of the best cars I have ever owned
Reply With Quote
  #57  
Old 03-13-2008, 03:57 PM
Emission's Avatar
Emission Emission is offline
Automotive Monomaniac
Location: North of Los Angeles, CA
 
Join Date: Dec 2001
Posts: 10,692
Mein Auto: Schnelle Autos
Quote:
Originally Posted by void.crusader View Post
Drawings from R&T magazine anyway.

2003 Altima 3.5 SE, 116K without a hitch. Love VQ.
My VQ ran 35,962 miles flawlessly (never skipped a beat) before the lease was up. Just 7,500-mile synthetic oil changes (the dip stick was a major PITA). It is a great powerplant, but about 15% thirstier than my twin-turbo.
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
Reply With Quote
  #58  
Old 03-13-2008, 04:02 PM
HW's Avatar
HW HW is online now
lurking
Location: was from vancouver, canada
 
Join Date: Dec 2001
Posts: 18,060
Mein Auto: 323ci, manual
Quote:
Originally Posted by redadair View Post
I have a few questions for you. Do you own a BMW? ('03 Altima 3.5 SE)

If not are you a TROLL?

If you are a TROLL why are you here?

Red
i don't view this guy as a troll and you don't need to own a bmw to hang out at 'fest.
__________________
2010 Acura TSX manual
Reply With Quote
  #59  
Old 03-13-2008, 04:05 PM
redadair's Avatar
redadair redadair is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Dec 2006
Posts: 721
Mein Auto: 07 335i Sedan (Mieke)
Quote:
Originally Posted by Emission View Post
My VQ ran 35,962 miles flawlessly (never skipped a beat) before the lease was up. Just 7,500-mile synthetic oil changes (the dip stick was a major PITA). It is a great powerplant, but about 15% thirstier than my twin-turbo.

+1 Mine in my G35 was the same. Great engine, thirsty on fuel, rough at high RPM's

An overall good car, but not in the BMW league.

Red
__________________

2011 1M
Aug 8th ED
MADA drop off 8/18/11
Arrived at Port 9/21/11
Re-Delivery 10/10/11



07 335i Sedan
May 4th ED
MADA drop off 5/11/07
Arrived at Port 6/11/07
Re-delivery 6/27/07

04 330i ZHP
11 Mini Cooper Clubman S Hampton Package
72 BMWtii drove till dead - Remains one of the best cars I have ever owned
Reply With Quote
  #60  
Old 03-13-2008, 04:08 PM
redadair's Avatar
redadair redadair is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Dec 2006
Posts: 721
Mein Auto: 07 335i Sedan (Mieke)
Quote:
Originally Posted by HW View Post
i don't view this guy as a troll and you don't need to own a bmw to hang out at 'fest.
Thanks for pointing that out to me. However someone who comes to another Auto maker's forums and spends a great deal of time telling everyone the bad sides of their cars makes them sound to me like a Troll.

What is your definition of a Troll? Hopefully more than a doll.

Red
__________________

2011 1M
Aug 8th ED
MADA drop off 8/18/11
Arrived at Port 9/21/11
Re-Delivery 10/10/11



07 335i Sedan
May 4th ED
MADA drop off 5/11/07
Arrived at Port 6/11/07
Re-delivery 6/27/07

04 330i ZHP
11 Mini Cooper Clubman S Hampton Package
72 BMWtii drove till dead - Remains one of the best cars I have ever owned

Last edited by redadair; 03-13-2008 at 04:10 PM.
Reply With Quote
  #61  
Old 03-13-2008, 04:14 PM
Penforhire Penforhire is offline
Officially Welcomed to the 'Fest
Location: Whittier, CA
 
Join Date: Dec 2005
Posts: 1,561
Mein Auto: 2006 330i
I don't think we should get hung up on specific output (that GT3 comparison) as ANY measure of goodness. The original 2L I4 Honda S2000 motor made 120 HP/L, naturally aspirated. BFD, because 240 HP was on the weak side. I got BETTER highway mileage from a 5.7 V8 (C5 Z06). Specific output is a masturbatory bragging right, not much more.
Reply With Quote
  #62  
Old 03-13-2008, 04:17 PM
redadair's Avatar
redadair redadair is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Dec 2006
Posts: 721
Mein Auto: 07 335i Sedan (Mieke)
Quote:
Originally Posted by Penforhire View Post
I don't think we should get hung up on specific output (that GT3 comparison) as ANY measure of goodness. The original 2L I4 Honda S2000 motor made 120 HP/L, naturally aspirated. BFD, because 240 HP was on the weak side. I got BETTER highway mileage from a 5.7 V8 (C5 Z06). Specific output is a masturbatory bragging right, not much more.
+1 that original Honda 2000 was the HP/L king. But had such bad low end toqure Honda increased the CC's of the engine.
__________________

2011 1M
Aug 8th ED
MADA drop off 8/18/11
Arrived at Port 9/21/11
Re-Delivery 10/10/11



07 335i Sedan
May 4th ED
MADA drop off 5/11/07
Arrived at Port 6/11/07
Re-delivery 6/27/07

04 330i ZHP
11 Mini Cooper Clubman S Hampton Package
72 BMWtii drove till dead - Remains one of the best cars I have ever owned
Reply With Quote
  #63  
Old 03-13-2008, 04:30 PM
void.crusader void.crusader is offline
Registered User
Location: VA
 
Join Date: Feb 2008
Posts: 30
Mein Auto: '03 Altima 3.5 SE
Quote:
Originally Posted by jsc View Post
Both on RON 98 (Euro equivalent to (MON+RON)/2 AKI 94). As you quoted the spec for the Euro GT3, the comparison was with a Euro M3 CSL. M3 CSL is not on sale at the moment as it is an E46 model, but it was a 911 competitor (basically a model that is just out of production with a stronger engine for it's capacity than the current Porsche). Really just an illustration that specific output for BMW engines is just as good as for Porsche.
I think I quoted US-spec GT3 with hp (SAE) rating. In euro horses: 415 bhp @ 7600 rpm, 299 lb-ft @ 5500 rpm.

http://www.caranddriver.com/reviews/...ew+page-2.html

"Owing to the small production run and the complications of clearing DOT and EPA standards for the North American market, BMW never exported the CSL to the United States, although some parts from it were later made available on the regular M3 as part of an optional Competition Package."
http://en.wikipedia.org/wiki/BMW_M3

Looks like E46 CSL was never cleared for the states? Anyway

3246cc, 360 bhp @ 7900, 274 lb-ft @ 4900

CSL hp/rpm*l = 360/(7900*3.246) = 0.01404

GT3 hp/rpm*l = 415/(7600*3.600) = 0.01517

http://www.rsportscars.com/bmw/2003-bmw-m3-csl/

Not sure specs for CSL are correct on this website, but can't find anything better.

Quote:
BTW, another way (of many ways) to estimate engine output efficiency (or perhaps capability is a better word here) is (torque under curve) / litres. Or better expressed as (average torque * RPM range) / litres. This measurement will take into account any non-linearity of the power curve that peak measurements don't take into account.
It's good, I agree, the only problem is we need curves for this.

Quote:
Originally Posted by Penforhire
I don't think we should get hung up on specific output (that GT3 comparison) as ANY measure of goodness. The original 2L I4 Honda S2000 motor made 120 HP/L, naturally aspirated. BFD, because 240 HP was on the weak side.
S2K (F20C) hp/rpm*l = 240/(8300*1.997) = 0.01448
Reply With Quote
  #64  
Old 03-13-2008, 05:03 PM
Emission's Avatar
Emission Emission is offline
Automotive Monomaniac
Location: North of Los Angeles, CA
 
Join Date: Dec 2001
Posts: 10,692
Mein Auto: Schnelle Autos
Quote:
Originally Posted by HW View Post
i don't view this guy as a troll and you don't need to own a bmw to hang out at 'fest.
+1

As a mod, I will agree. A non-BMW owner is a flag, but not an issue in general.

Welcome to the Fest!

- Mike
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
Reply With Quote
  #65  
Old 03-13-2008, 05:12 PM
redadair's Avatar
redadair redadair is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Dec 2006
Posts: 721
Mein Auto: 07 335i Sedan (Mieke)
Quote:
Originally Posted by Emission View Post
+1

As a mod, I will agree. A non-BMW owner is a flag, but not an issue in general.

Welcome to the Fest!

- Mike
I agree with you Mike. Watch and see!

He has been here awhile and I am not the only one who he has rubbed the wrong way. Check this post out. I think you know that I don't use Stereo on this Forum before I hear it.

http://www.bimmerfest.com/forums/sho...d.php?t=265915
__________________

2011 1M
Aug 8th ED
MADA drop off 8/18/11
Arrived at Port 9/21/11
Re-Delivery 10/10/11



07 335i Sedan
May 4th ED
MADA drop off 5/11/07
Arrived at Port 6/11/07
Re-delivery 6/27/07

04 330i ZHP
11 Mini Cooper Clubman S Hampton Package
72 BMWtii drove till dead - Remains one of the best cars I have ever owned

Last edited by redadair; 03-13-2008 at 05:23 PM.
Reply With Quote
  #66  
Old 03-13-2008, 05:30 PM
Emission's Avatar
Emission Emission is offline
Automotive Monomaniac
Location: North of Los Angeles, CA
 
Join Date: Dec 2001
Posts: 10,692
Mein Auto: Schnelle Autos
Quote:
Originally Posted by redadair View Post
I agree with you Mike. Watch and see!

He has been here awhile and I am not the only one who he has rubbed the wrong way. Check this post out. I think you know that I don't use Stereo on this Forum before I hear it.

http://www.bimmerfest.com/forums/sho...d.php?t=265915
Interesting.

I will give him the benefit of the doubt. I didn't think people shopped the STi/Evo vs. 335i. Two completely different vehicles.
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
Reply With Quote
  #67  
Old 03-13-2008, 05:32 PM
redadair's Avatar
redadair redadair is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Dec 2006
Posts: 721
Mein Auto: 07 335i Sedan (Mieke)
Quote:
Originally Posted by Emission View Post
Interesting.

I will give him the benefit of the doubt. I didn't think people shopped the STi/Evo vs. 335i. Two completely different vehicles.
My view also. Thanks
__________________

2011 1M
Aug 8th ED
MADA drop off 8/18/11
Arrived at Port 9/21/11
Re-Delivery 10/10/11



07 335i Sedan
May 4th ED
MADA drop off 5/11/07
Arrived at Port 6/11/07
Re-delivery 6/27/07

04 330i ZHP
11 Mini Cooper Clubman S Hampton Package
72 BMWtii drove till dead - Remains one of the best cars I have ever owned
Reply With Quote
  #68  
Old 03-13-2008, 05:33 PM
HW's Avatar
HW HW is online now
lurking
Location: was from vancouver, canada
 
Join Date: Dec 2001
Posts: 18,060
Mein Auto: 323ci, manual
Quote:
Originally Posted by Emission View Post
Interesting.

I will give him the benefit of the doubt. I didn't think people shopped the STi/Evo vs. 335i. Two completely different vehicles.
back in '99, i shopped between the honda civic coupe and the bmw 323ci. result, i chose the german civic
__________________
2010 Acura TSX manual
Reply With Quote
  #69  
Old 03-13-2008, 06:09 PM
iversonm's Avatar
iversonm iversonm is offline
3 pedals only!
Location: Grosse Ile, Michigan
 
Join Date: Nov 2004
Posts: 2,666
Mein Auto: 2008 550i Carbon Black
Quote:
Originally Posted by brashman View Post
Iversonm, when you say "straight v8's" are you referring to the 180 degree cranks that folks like Ferrari use? Just curious.
Yep. I don't remember the proper name. "Not cross-plane" doesn't exactly roll off the tongue.
__________________
2012 E88 128i, Alpine White/Black
2011 E90 328i, Crimson Red/Black
2008 E60 550i, Carbon Black/Natural Brown, ED 2 November 2007 (retired)
2006 E83 X3, Silver Grey/Black, ED 15 May 2006. (retired)
2005 E46 330i, Jet Black/Black (retired)
2002 E46 325i, Electric Red/Black (retired)
Reply With Quote
  #70  
Old 03-13-2008, 06:12 PM
iversonm's Avatar
iversonm iversonm is offline
3 pedals only!
Location: Grosse Ile, Michigan
 
Join Date: Nov 2004
Posts: 2,666
Mein Auto: 2008 550i Carbon Black
Quote:
Originally Posted by brett8210 View Post
Also to consider is the European tax on displacement over 3.0 L. I doubt BMW will go over this displacement.
Good observation. I hadn't considered that. Taxation is also the reason that Japanese 4-pots tend to be 2 liters.
__________________
2012 E88 128i, Alpine White/Black
2011 E90 328i, Crimson Red/Black
2008 E60 550i, Carbon Black/Natural Brown, ED 2 November 2007 (retired)
2006 E83 X3, Silver Grey/Black, ED 15 May 2006. (retired)
2005 E46 330i, Jet Black/Black (retired)
2002 E46 325i, Electric Red/Black (retired)
Reply With Quote
  #71  
Old 03-13-2008, 06:16 PM
HW's Avatar
HW HW is online now
lurking
Location: was from vancouver, canada
 
Join Date: Dec 2001
Posts: 18,060
Mein Auto: 323ci, manual
Quote:
Originally Posted by iversonm View Post
Good observation. I hadn't considered that. Taxation is also the reason that Japanese 4-pots tend to be 2 liters.
i believe japan tax on # of cylinders. reason why there aren't too many V8 from japan.
__________________
2010 Acura TSX manual
Reply With Quote
  #72  
Old 03-13-2008, 06:41 PM
Kanuck Kanuck is offline
Officially Welcomed to the 'Fest
Location: Toronto
 
Join Date: Feb 2003
Posts: 1,107
Mein Auto: '15 M3 (ED)
Quote:
Originally Posted by WhoozYaDaddy View Post
yeah, that is the reason, V-8 allows a more balanced piston firing order than a V-6. The advantage of a straight 6 over a V-6 is the balanced piston firing order that is mentioned in an earlier post. The straight 8 doesn't carry a significant advantage over a v-8 due to 4 pistons per cylinder bank. The V-8 is so much better balanced and compact over a straight 8 that the straight 8 is antiquated. Straight 8s and 10s ad 12s were used on old receprecating aircraft engines.
I remember my Grandfather talking about a straight 8 engine he had in a Packard. Must have been quite a car.
Reply With Quote
  #73  
Old 03-13-2008, 06:51 PM
Bcube's Avatar
Bcube Bcube is offline
Combat Commuter
Location: Valley of the Dirt People, SoCal
 
Join Date: Apr 2007
Posts: 1,974
Mein Auto: 2007 E93 335i
Quote:
Originally Posted by iversonm View Post
Yep. I don't remember the proper name. "Not cross-plane" doesn't exactly roll off the tongue.
Flat plane.

The reason why their V8's produce that high rpm F1 scream.
__________________
-Brian
"Used cars are our entry cars." - Luca di Montezemolo
Reply With Quote
  #74  
Old 03-13-2008, 07:59 PM
unvrno unvrno is offline
Registered User
Location: New Jersey
 
Join Date: Oct 2007
Posts: 32
Mein Auto: 2001 Mercedes C320
Toyota Supras also had inline 6s; my 1983 Supra had 2.8 liters. Power and torque are not that exciting by today's standards, but it was as smooth as silk and may be better than my 335. That was a nice car in its day.
Reply With Quote
  #75  
Old 03-13-2008, 11:13 PM
jsc's Avatar
jsc jsc is offline
Officially Welcomed to the 'Fest
Location: Calgary
 
Join Date: Sep 2003
Posts: 1,441
Mein Auto: E85 M-Roadster, E82 135i
Quote:
Originally Posted by void.crusader View Post
CSL hp/rpm*l = 360/(7900*3.246) = 0.01404

GT3 hp/rpm*l = 415/(7600*3.600) = 0.01517
We also know the following:
CSL bhp at torque peak (273lb/ft @ 4900) = 273*(4900/5252) = 254.7bhp
therefore hp/rpm*l = 254.7/(4900*3.246) = 0.01601

GT3 bhp at torque peak (298lb/ft @ 5500) = 298*(5500/5252) = 312.1bhp
therefore hp/rpm*l = 312.1/(5500*3.600) = 0.01576

So the BMW engine is more efficient at the torque peak and should have a specific power curve that rises above the Porsche curve except at the highest RPMs, hence it is likely to have a better specific torque distribution under the curve than the Porsche.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)
Today's Posts Search
Thread Tools
Display Modes

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 -7. The time now is 09:26 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms