BMW R27

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Revision as of 02:31, 12 May 2008 by Schuh (talk | contribs) (→‎1967)
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  • 247cc single cylinder.

1967

1967 BMW R27 in Black
1967 BMW R27 in Black
1967 BMW R27 in Black
1967 BMW R27 in Black
1967 BMW R27 in Black
1967 BMW R27 in Black


Specifications

  • Bore (mm): 68
  • Stroke: (mm): 68
  • Number of cylinders: 1
  • Plug gap (inches): 0.024 (0.6mm)
  • Point gap (inches): 0.016 (0.4mm)
  • Ignition timing - Advance: Automatic
    degrees BTDC - retarded: 7
    degrees BTDC - advanced: 40-44
  • Valve clearance (cold)
    inlet (inches): 0.006 (0.15mm)
    exhaust (inches): 0.008 (0.20mm)
  • Electrical system voltage: 6
  • Battery terminal grounded: Negative
  • Tire size: 3.25 x 18
  • Tire pressure
    front (PSI): 21-22
    rear (PSI): 22-23 (28-29 when carrying passengers)
  • Number of gears: 4
  • Approx. weight (Lbs.): 356

Maintenance

  • Recommended spark plugs were:
    Bosch type W240T1
    BERU type 240/14
    Champion type L-85
  • Timing marks are located on the flywheel. These marks align with a notch in a timing hole which is located in the left side of the flywheel housing. Marks on the flywheel are:
"OT" for top dead center
"S" for static timing
"F" for advanced timing

Advanced timing is checked with the motor running at 3000RPM. Adjustment is accomplished by moving the entire breaker plate assembly after loosening two screws and sliding the assembly along elongated holes.