Comp. ratios

Discussion in 'Aviation' started by R Pope, Sep 27, 2012.

  1. R Pope

    R Pope Member

    Joined:
    Mar 10, 2004
    Messages:
    318
    Likes Received:
    5
    Trophy Points:
    18
    Why were the CR's different from left to right heads on V engines, particularly the Daimler-benz's? One side is 8.2, the other 8.3, or similar. The old Ford Flatheads had the crankshaft offset in the block, so the valves were at different angles making for CR changes, but an OHV engine would not have that excuse.
     
  2. engguy

    engguy Member

    Joined:
    May 27, 2008
    Messages:
    186
    Likes Received:
    0
    Trophy Points:
    16
    con rod arrangement ?
     
  3. cimmex

    cimmex Member

    Joined:
    May 4, 2011
    Messages:
    356
    Likes Received:
    9
    Trophy Points:
    18
    The sidemounted supercharger caused different length of the air ducting to the cylinder banks. So the flow losses at the longer side were compensated by a slightly higher CR.
    cimmex
     
Loading...
Similar Threads
  1. steve51
    Replies:
    244
    Views:
    15,396
  2. ellis995
    Replies:
    41
    Views:
    2,141
  3. nimrod.michaeli
    Replies:
    118
    Views:
    29,398
  4. Lucky13
    Replies:
    27
    Views:
    5,544
  5. ricardo
    Replies:
    194
    Views:
    50,992

Share This Page