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


Go Back   ZPOST > BMW Z4 Technical Talk > Engine, Exhaust, Drivetrain Modifications
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      08-06-2008, 09:20 AM   #1
F87LUV
Lieutenant General
F87LUV's Avatar
United_States
3688
Rep
15,081
Posts

Drives: '16 M2, '23 GT4
Join Date: May 2007
Location: NJ

iTrader: (4)

Garage List
2023 Porsche GT4  [5.00]
2016 BMW M2  [8.66]
What is the 3.0si/N52 motor capable of?

So we all know everyone just lovesssssssss the e46/e86 ///Ms and their 3.2/S54 motors and the power it cranks out but Im curious to know how much one could get out of the si. How much could it benefit from mods/tuning? Anything worth putting the work into?

And dont say just go get an ///M. Im just curious.
__________________
IG: Trackinheels
Appreciate 0
      08-06-2008, 10:37 AM   #2
Dammmittt
My favorite sign.
Dammmittt's Avatar
South Korea
167
Rep
4,333
Posts

Drives: 2007 M Coupe
Join Date: Dec 2006
Location: Der Autobahnen

iTrader: (0)

Check out ESS's website, they have SC systems for the N52.
__________________


07 ///M Coupe (Premium Package) Black Saphire Ext. Imola Red Int.

Best Website EVER!
Appreciate 0
      08-06-2008, 01:08 PM   #3
epbrown
Colonel
epbrown's Avatar
United_States
60
Rep
2,128
Posts

Drives: BMW M Coupe, Porsche Boxster S
Join Date: May 2007
Location: Chicago, IL

iTrader: (0)

For a street-driven car in the US, gears are the best bang-for-buck mod out there, since with our low speed limits we tend to be more focused on brief bursts of acceleration for passing and merging than sustained triple-digit speeds. Overall, the best initial mods are always stickier tires, lighter wheels, brake pads with better bite, gears, and that old standby driver improvement.

But most people want to quote bigger horsepower numbers and have a louder car - the automotive equivalents to a fat wallet and a boob job/sock down your pants. Hence the continued success of chips, exhaust and intake mods - along with get rich quick schemes, and breast/penis enlargement drugs.
Appreciate 0
      08-06-2008, 01:10 PM   #4
F87LUV
Lieutenant General
F87LUV's Avatar
United_States
3688
Rep
15,081
Posts

Drives: '16 M2, '23 GT4
Join Date: May 2007
Location: NJ

iTrader: (4)

Garage List
2023 Porsche GT4  [5.00]
2016 BMW M2  [8.66]
Interesting analogies
__________________
IG: Trackinheels
Appreciate 0
      08-06-2008, 02:08 PM   #5
epbrown
Colonel
epbrown's Avatar
United_States
60
Rep
2,128
Posts

Drives: BMW M Coupe, Porsche Boxster S
Join Date: May 2007
Location: Chicago, IL

iTrader: (0)

Quote:
Originally Posted by ZGirl07 View Post
Interesting analogies
I've got a better one explains horsepower and torque using testicle size v. penis size, but this isn't the forum for it.
Appreciate 0
      08-06-2008, 02:51 PM   #6
Hawkeye
Brigadier General
Hawkeye's Avatar
No_Country
2070
Rep
4,365
Posts

Drives: '07 Z4 Coupe, '21 X3, '16 GMC
Join Date: Aug 2007
Location: Iowa

iTrader: (0)

Garage List
Quote:
Originally Posted by epbrown View Post
I've got a better one explains horsepower and torque using testicle size v. penis size, but this isn't the forum for it.
You are right... This is the forum for it!

General BMW Z4 Forum
__________________
2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP
2016 GMC Sierra SLT Z71 Premium Plus 4x4
2017 Harley StreetGlide • Denim Black • V&H Tune
2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
Appreciate 0
      08-06-2008, 05:28 PM   #7
Reach
gone baby gone
381
Rep
1,052
Posts

Drives: 2016 F80
Join Date: Nov 2007
Location: Location, Location.

iTrader: (0)

Quote:
Originally Posted by Dammmittt View Post
Check out ESS's website, they have SC systems for the N52.
Go ahead and link to it.
Appreciate 0
      08-06-2008, 11:19 PM   #8
155MPH
Major
155MPH's Avatar
United_States
61
Rep
1,379
Posts

Drives: E89 Z4 sDrive28i M Performance
Join Date: May 2007
Location: South Jersey Shore

iTrader: (0)

Garage List
personally, I like the boob job I got for my car. Now it sounds like what nature should have given it.....
Appreciate 0
      08-07-2008, 10:18 AM   #9
Reach
gone baby gone
381
Rep
1,052
Posts

Drives: 2016 F80
Join Date: Nov 2007
Location: Location, Location.

iTrader: (0)

"Drives: My Wife Crazy" Dude, great line. Oh how mine would agree...
Appreciate 0
      08-08-2008, 04:11 PM   #10
Z4coupe
Private
0
Rep
55
Posts

Drives: 2007 Z4 coupe
Join Date: Feb 2008
Location: Fall River MA

iTrader: (0)

Quote:
Originally Posted by ZGirl07 View Post
So we all know everyone just lovesssssssss the e46/e86 ///Ms and their 3.2/S54 motors and the power it cranks out but Im curious to know how much one could get out of the si. How much could it benefit from mods/tuning? Anything worth putting the work into?

And dont say just go get an ///M. Im just curious.
A few sites that offer an aftermarket for the SI:

http://www.ca-automotive.co.uk/home.php

http://www.g-power.de/

If yours is a standard SI upgrading to a 3.64 from the automatic would be a upgrade to think about. As with most aftermarket hopping up the motor with aftermarket cams, reworked heads and manifold intake Im sure would bring the hp up to the 300rwhp mark, but $ wise its not economical. A bolt on like a low boost supercharger would be a great add on. If you look at the M, its bascially what you are asking, a punched out 3 liter with massaged race parts. The Ms 330hp is not the upper end of the spectrum for the inline 6, its just the drivability that BMW wanted because its going to be driven on a road, not exclusivily a track car. 400hp is the upper end of the inline 6 in race prepped na cars. Boosted, I wouldnt know, but I assume adding a low boost 4.5-6lbs of boost, intercooled if you could Im sure the Si motor would churn out close to 400 crank hp reliably, which is the key. other options to consider are having someone remap the computer here are some other sites that offer it specifically for the Si:

http://www.hs-elektronik.com/datenbl...5ps-315nm.html

http://wetterauer.de/w_datasheet/datasheet.php?id=1042

Hope this helps a bit

Last edited by Z4coupe; 08-10-2008 at 01:30 PM..
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



All times are GMT -5. The time now is 02:06 AM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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