M3 exhaust manifold - 3.0 vs 3.2

Notices
 

Thread: M3 exhaust manifold - 3.0 vs 3.2

Reply to Thread
Results 1 to 4 of 4
  1. M3 exhaust manifold - 3.0 vs 3.2 
    #1
    BMW Fanatic
    Car Details
    stefan2m's Car Details
    Model of Car:
    320i
    Year of Manufacture:
    2001
    Transmission Type:
    5 speed manual
    Car Body Type:
    Touring
    stefan2m's Avatar
    Join Date
    Sep 2012
    Location
    The Netherlands (0592)
    Posts
    51
    Thanks
    5
    Thanked 3 Times in 3 Posts
    I was wondering what the differences are between the exhaust manifolds from the M3 3.0 and the M3 3.2 as I recently bought a 3.2 midsection and backbox for my '96 323i.
    Now looking for manifolds to make it fit the car, and since 3.0 manifolds are found easier and cheaper, I was wondering if there will be fitment issues of any sort if I were to get a set of s50b30 maniflds in stead of s50b32 ones.
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    BMW Guru
    Car Details
    TheEnd's Car Details
    Model of Car:
    540
    Year of Manufacture:
    1998
    Transmission Type:
    Auto
    Car Body Type:
    Saloon
    TheEnd's Avatar
    Join Date
    Jun 2010
    Location
    Birmingham
    Posts
    8,979
    Thanks
    478
    Thanked 2,990 Times in 2,440 Posts
    They are the same shape and size, but the 3.2 has holes for the lambda sensor in the manifold, and the 3.0 has the lambda sensors fitted in the middle cat section.
     
     

  4.  
    #3
    BMW Fanatic
    Car Details
    stefan2m's Car Details
    Model of Car:
    320i
    Year of Manufacture:
    2001
    Transmission Type:
    5 speed manual
    Car Body Type:
    Touring
    stefan2m's Avatar
    Join Date
    Sep 2012
    Location
    The Netherlands (0592)
    Posts
    51
    Thanks
    5
    Thanked 3 Times in 3 Posts
    That's it? Easy then!
    It is little effort to weld two bungs (or nuts, even) onto the collectors, thread on 02 sensors is M18x1.5 IIRC?
     
     

  5. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  6.  
    #4
    BMW Guru
    Car Details
    TheEnd's Car Details
    Model of Car:
    540
    Year of Manufacture:
    1998
    Transmission Type:
    Auto
    Car Body Type:
    Saloon
    TheEnd's Avatar
    Join Date
    Jun 2010
    Location
    Birmingham
    Posts
    8,979
    Thanks
    478
    Thanked 2,990 Times in 2,440 Posts
    The thread sizes sound about right.
    Be careful on the manifold tubes, a lot of them are double walled with a small gap, so make sure you get a good weld.

    If you have a flexible section, make sure it is in good condition and no cracks.
     
     

Tags for this Thread

View Tag Cloud

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