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 > F30 / F31 / F32 / F33 (2012 - current)

F30 / F31 / F32 / F33 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 01-17-2013, 09:35 AM
tim330i's Avatar
tim330i tim330i is online now
Administrator
Location: Boston
 
Join Date: Dec 2001
Posts: 6,162
Mein Auto: Ti Silver 03 M3
F30 320i vs 328i engines - Part number comparison

F30 320i vs 328i engines - Part number comparison

BMW has just announced a new entry level F30 3 series, the 320i. The 320i shares the same N20; TwinPower single turbo, twin scroll, 2.0 liter inline 4 cylinder engine as the 328i. The 320i is factory rated at 180 hp at 5,000 RPMs and 200 lb-ft of torque from 1,250 RPMs. Stacked next to the 328i with 240hp at 5000 RPMs and 255 lb-ft of torque from 1250 RPMs and the obvious question is what is the difference in the two engines.

The first obvious answer is there is something in BMW's DME control software that limits the power, most likely by limiting boost pressure, on the 320i. That appears to be true as both the 320 and the 328 use the same DME hardware (PN - 12148604210) and the same engine control system MEVD 17.2.9. With a software tweak the likely difference between the 320i and the 328i we go in search of other changes that might limit the 320is ability to make the same power the 328i N20 puts down.

Read more about the 2013 BMW 320i entry level 3 series

The next easy target is the intake, exhaust manifold and turbo. Surprisingly they turned out to be the same part number. In fact the 320i and the 328i share the exact same part numbers for a majority of the engine components.

Shared engine components between F30 320i and 328i
  • Cylinder head - PN 11127624778
  • Connecting rods - PN 11247624616
  • Crankshaft - PN 11212212762
  • Intake manifold - PN 11617588126
  • Air box - PN 13717597589
  • Air filter - PN 13718507320
  • Intercooler - PN 17517618809
  • Radiator - PN 17117600520
  • Throttle body - PN 13547588625
  • HPFP - PN 13517584461
  • MAF - PN 13627602038
  • DME/ECU - PN 12148604210
  • Exhaust manifold/turbo - PN 11657642469

See what is missing in the above list? The difference in the 320i and the 328i is the pistons. While both have a 10:1 compression ratio the 320i has a different part numbers for the pistons then the 328i. What that exactly means in terms of the ability to boost the turbo pressure and get 328 horsepower from your 320 is not yet known.

Stay tuned as we continue to sift through BMW's technical documents searching for an answer.

Last edited by tim330i; 01-18-2013 at 11:12 AM.
Reply With Quote
More about F30 320i vs 328i engines - Part number comparison

2013-BMW-NAIAS 12013-BMW-NAIAS 22013-BMW-NAIAS 32013-BMW-NAIAS 42013-BMW-NAIAS 52013-BMW-NAIAS 62013-BMW-NAIAS 72013-BMW-NAIAS 82013-BMW-NAIAS 92013-BMW-NAIAS 10

Advertisement
 

Bookmarks

Tags
2013 3 series, 2013 320i, 320 vs 328, bmw, bmw f30 320i, bmw news, bmw part numbers, bmw parts, f30 328, f30 news, f30post


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > F30 / F31 / F32 / F33 (2012 - current)
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 11:24 AM.


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