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Home >> Suzuki >> 1990 >> Swift GS, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.3L 4-CYL - VINS [3,5] & 1.6L 4-CYL - VIN [0] >> Overhaul >> Main Bearing Selection >> Standard Bearings

Standard Bearings

  1. Standard main bearings are coded with a color patch and are available in 5 thickness variations. Upper half of bearing has an oil groove. An arrow mark and number are embossed on each main bearing cap. See Fig 1 .
  2. Ensure that arrow mark on main bearing cap faces toward crankshaft pulley. Bearing No. 1 is at crankshaft pulley end of engine. Bearing No. 5 is at flywheel end of engine.
  3. Crank webs of No. 2 and No. 3 cylinders have 5 stamped numbers. Journal diameter is represented by 3 numbers, "1", "2" and "3". See Fig 1 . The first, second, third, fourth and fifth stamped numbers on web indicate journal diameter of bearings. Read stamped numbers from left to right.
    Fig 1: Stamped Numbers on Crank Webs of No. 2 & No. 3 Cylinders
    G81636Courtesy of SUZUKI OF AMERICA CORP.
    CRANKSHAFT JOURNAL DIAMETERS (1.3L)

    Stamped Numbers On Webs Diameter: In. (mm)
    1 1.7714-1.7716 (44.994-45.000)
    2 1.7712-1.7714 (44.988-44.994)
    3 1.7710-1.7712 (44.982-44.988)
    CRANKSHAFT JOURNAL DIAMETERS (1.6L)

    Stamped Numbers On Webs Diameter: In. (mm)
    1 2.0470-2.0472 (51.994-52.000)
    2 2.0468-2.0470 (51.988-51.994)
    3 2.0465-2.0468 (51.982-51.988)
    Fig 2: Stamped Letters on Cylinder Block
    G81637Courtesy of SUZUKI OF AMERICA CORP.
  4. Determine bearing cap bore diameter with bearing removed. Five letters are stamped on mating surface of cylinder block. See Fig 2 . Cap bore diameter is represented by 3 letters, "A", "B" and "C".
  5. The first, second, third, fourth and fifth stamped letters indicate the cap bore diameter of bearing caps "1", "2", "3", "4" and "5" respectively. Five thickness variations of standard main bearings are available. Each color indicates thickness at center of bearing. See Fig 3 .
  6. From number stamped on crankshaft webs of No. 2 and No. 3 cylinders and letters stamped on mating surface of cylinder block, refer to COLOR CODE FOR STANDARD BEARING chart and determine new standard bearing to be installed on journal.
SAMURAI & SWIFT BEARING CAP BORE DIAMETERS

Stamped Letters On Block Diameter: In. (mm)
A 1.9292-1.9294 (49.000-49.006)
B 1.9294-1.9296 (49.006-49.012)
C 1.9296-1.9298 (49.012-49.018)
SIDEKICK BEARING CAP BORE DIAMETERS

Stamped Letters On Block Diameter: In. (mm)
A 2.2047-2.2050 (56.000-56.006)
B 2.2050-2.2052 (56.006-56.012)
C 2.2052-2.2054 (56.012-56.018)
Fig 3: Standard Main Bearing Color Mark
G81638Courtesy of SUZUKI OF AMERICA CORP.
COLOR CODE FOR STANDARD BEARINGS

Color Painted Bearing Thickness: In. (mm)
Black .0787-.0788 (2.000-2.003)
Blue .0790-.0791 (2.009-2.012)
Green .0786-.0787 (1.996-2.000)
No Paint .0788-.0789 (2.002-2.006)
Yellow .0789-.0790 (2.006-2.009)
STANDARD BEARING APPLICATION CHART

Letter Stamped On Block Letter Stamped On Crankshaft Web Standard Bearing Color
A 1 Green
A 2 Black
A 3 No Color
B 1 Black
B 2 No Color
B 3 Yellow
C 1 No Color
C 2 Yellow
C 3 Blue
Fig 4: Standard Bearing Application Graphic
G90I00347Courtesy of SUZUKI OF AMERICA CORP.
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