View source for Engine Specs -S65/S85 Main Bearings

__FORCETOC__

== Main Journals & Bearing Clearance ==
{| class="diyTable bearingSpec"
  !Crankshaft Main Journals & Bearings
  !Metric Dimensions
  !SAE (Inch) Dimensions
 |-
  |Main Journal Dimensions
  |59.9758 mm
  |2.36125 inch
 
 |-
  |Main Journal Variance
  |59.9694 - 59.9821 mm
  |2.36100 - 2.36150 inch
 
 |-
  |Main  Journal Tolerance
  |<nowiki>-0.0063, +0.0063 mm</nowiki>
  |<nowiki>-0.00025, +0.00025 inch</nowiki>
 
 |-
  |Bed Plate + Bearing Dimensions
  |60.0164 mm
  |2.36285 inch
 
 |-
  |Bed Plate + Bearing Variance
  |60.0126 - 60.0202 mm
  |2.36270 - 2.36300 inch
 
 |-
  |Nominal Main Bearing Clearance
  |0.0406 mm
  |0.00160 inch
 
 |-
  |Bearing Clearance Variance
  |0.0305 - 0.0508 mm
  |0.00120 - 0.00200 inch
 
 |-
  |Bearing Clearance Tolerance
  |<nowiki>-0.0102, +0.0102 mm</nowiki>
  |<nowiki>-0.00040, +0.00040 inch</nowiki>
 |}

== Main Bearing Part Numbers ==
{| class="diyTable bearingPNum"
  !BMW Part Number
  !Description
  ! colspan="2" |Location
  !Color
  !Standard Size Bearings
  !Application
 
 |-
  |11 21 7 841 610
  |Main Bearing Shell
  |1-4
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
 
 |-
  |11 21 7 841 606
  |Main Bearing Shell
  |1-4
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
 
 |-
  |11 21 7 841 618
  |Main Guide Bearing Shell
  |5
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
 
 |-
  |11 21 7 841 614
  |Main Guide Bearing Shell
  |5
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
 |}

== Main Bearing History ==
The following is the main bearing history of the "Green" bearings.  Yellow and Violate bearings follow an identical pattern, but with their respective part numbers.  Maybe if I get some time, I'll add them to this list.
{| class = "diyTable bearingHist"
  !BMW Part Number
  !Description
  !Location
  !Color
  !Standard Size Bearings
  !Application
  !Prod. Start
  !Prod. End
  !Superceded By
 
 |-
  |11 21 7 836 532
  |Main Bearing Shell
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50
  |Sep-04
  |Feb-08
  |11 21 7 841 489
 
 |-
  |11 21 7 836 517
  |Main Guide Bearing Shell
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50
  |Sep-04
  |Feb-08
  |11 21 7 841 499
 
 |-
  |11 21 7 836 539
  |Main Bearing Shell
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50
  |Sep-04
  |Feb-08
  |11 21 7 841 484
 
 |-
  |11 21 7 836 524
  |Main Guide Bearing Shell
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50
  |Sep-04
  |Feb-08
  |11 21 7 841 494
 
 |-
  |11 21 7 841 489
  |Main Bearing Shell
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Sep-07
  |Jul-11
  |11 21 7 841 610
 
 |-
  |11 21 7 841 499
  |Main Guide Bearing Shell
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Sep-07
  |Dec-08
  |11 21 7 841 618
 
 |-
  |11 21 7 841 484
  |Main Bearing Shell
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Sep-07
  |Apr-11
  |11 21 7 841 606
 
 |-
  |11 21 7 841 494
  |Main Guide Bearing Shell
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Sep-07
  |Jan-09
  |11 21 7 841 614
 
 |-
  |11 21 7 841 610
  |Main Bearing Shell
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Nov-08
  |Present
  |
 
 |-
  |11 21 7 841 618
  |Main Guide Bearing Shell
  |Top
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Dec-08
  |Present
  |
 
 |-
  |11 21 7 841 606
  |Main Bearing Shell
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Nov-08
  |Present
  |
 
 |-
  |11 21 7 841 614
  |Main Guide Bearing Shell
  |Bottom
  |Green
  |60.00 mm (+0.00 mm)
  |S85B50, S65B40, S65B44
  |Nov-08
  |Present
  |
 |}

==Supporting Measurements==
{| class = "diyTable supportData mainBearings"
  !
  !Main-1
  !Main-2
  !Main-3
  !Main-4
  !Main-5
  !
  !Bearing-1
  !Bearing-2
  !Bearing-3
  !Bearing-4
  !Bearing-5
  !
  !Clear-1
  !Clear-2
  !Clear-3
  !Clear-4
  !Clear-5
 
 |-
  |Crank-1
  |2.36145
  |2.36145
  |2.36130
  |2.36150
  |2.36140
  |
  |2.36270
  |2.36270
  |2.36300
  |2.36300
  |2.36290
  |
  |0.00125
  |0.00125
  |0.00170
  |0.00150
  |0.00150
 
 |-
  |Crank-2
  |2.36110
  |2.36110
  |2.36120
  |2.36100
  |2.36120
  |
  |2.36270
  |2.36270
  |2.36300
  |2.36300
  |2.36290
  |
  |0.00160
  |0.00160
  |0.00180
  |0.00200
  |0.00170
 |}



{| class = "diyTable"
  ! style="width: 150px;" |
  !Min
  !Nominal
  !Max
  !Min Dev.
  !Max Dev.
 
 |-
  |Journal
  |2.36100
  |2.36125
  |2.36150
  |<nowiki>-0.00025</nowiki>
  |0.00025
 
 |-
  |Bearing
  |2.36270
  |2.36285
  |2.36300
  |<nowiki>-0.00015</nowiki>
  |0.00015
 
 |-
  |Clearance
  |0.00120
  |0.00160
  |0.00200
  |<nowiki>-0.00040</nowiki>
  |0.00040
 |}