Main Bearings
Selection
CAUTION: If the codes are indecipherable because of
an accumulation of dirt and dust, do not scrub them
with a wire brush or scraper. Clean them only with sol-
vent or detergent.
Crankshaft Bore Code Locations
Letters or bars have been stamped on the end of the
block as a code for the size of each of the four main jour-
nal bores. Use them, and the numbers stamped on the
crankshaft (codes for main journal size), to choose the
correct bearings.
No. 4 JOURNAL
(FLYWHEEL END)
Main Journal Code Locations
(numbers or bars)
No.4 JOURNAL
(FLYWHEEL END)
No. 1 JOURNAL
(PULLEY END)
No. 1 JOURNAL
(PULLEY END)
Bearing Design
COLOR
GROOVE
UPPER BEARING
COLOR
LOWER BEARING
Bearing Identification
Color code is on the
edge of the bearing
Larger crank bore
Small bearing (thicker)
Smaller
main
journal
Smaller
bearing
(thicker)
NOTE: When using bearing halves of different col-
ors, it does not matter which color is used in the
top or bottom.
Connecting Rod Bearings
Selection
CAUTION: If the codes are indecipherable because of
an accumulation of dirt and dust, do not scrub them
with a wire brush or scraper. Clean them only with sol-
vent or detergent.
Connecting Rod Journal Code Location
Numbers have been stamped on the side of each con-
necting rod as a code for the size of the big end. Use
them, and the letters stamped on the crankshaft (codes
for rod journal size), to choose the correct bearings.
Half of number is
stamped on bearing
cap and the other
half is stamped on
rod.
No. 1 JOURNAL
(PULLEY END)
Bearing Identification
Color code is on the
edge of the bearing
No. 6 JOURNAL
(FLYWHEEL END)
Larger big end bore
Small bearing (thicker)
Smaller
rod
journal
Smaller
bearing
(thicker)
NOTE: When using bearing halves of different col-
ors, it does not matter which color is used in the
top or bottom.
Rod Journal Code Locations (letters or bars)
Selection
CAUTION: If the codes are indecipherable because of
an accumulation of dirt and dust, do not scrub them
with a wire brush or scraper. Clean them only with sol-
vent or detergent.
Crankshaft Bore Code Locations
Letters or bars have been stamped on the end of the
block as a code for the size of each of the four main jour-
nal bores. Use them, and the numbers stamped on the
crankshaft (codes for main journal size), to choose the
correct bearings.
No. 4 JOURNAL
(FLYWHEEL END)
Main Journal Code Locations
(numbers or bars)
No.4 JOURNAL
(FLYWHEEL END)
No. 1 JOURNAL
(PULLEY END)
No. 1 JOURNAL
(PULLEY END)
Bearing Design
COLOR
GROOVE
UPPER BEARING
COLOR
LOWER BEARING
Bearing Identification
Color code is on the
edge of the bearing
Larger crank bore
Small bearing (thicker)
Smaller
main
journal
Smaller
bearing
(thicker)
NOTE: When using bearing halves of different col-
ors, it does not matter which color is used in the
top or bottom.
Connecting Rod Bearings
Selection
CAUTION: If the codes are indecipherable because of
an accumulation of dirt and dust, do not scrub them
with a wire brush or scraper. Clean them only with sol-
vent or detergent.
Connecting Rod Journal Code Location
Numbers have been stamped on the side of each con-
necting rod as a code for the size of the big end. Use
them, and the letters stamped on the crankshaft (codes
for rod journal size), to choose the correct bearings.
Half of number is
stamped on bearing
cap and the other
half is stamped on
rod.
No. 1 JOURNAL
(PULLEY END)
Bearing Identification
Color code is on the
edge of the bearing
No. 6 JOURNAL
(FLYWHEEL END)
Larger big end bore
Small bearing (thicker)
Smaller
rod
journal
Smaller
bearing
(thicker)
NOTE: When using bearing halves of different col-
ors, it does not matter which color is used in the
top or bottom.
Rod Journal Code Locations (letters or bars)