Crankshaft Main Bearing
Crankshaft bearingMain bearing-to-journal oil clearance
No.1, 2, 4, 5 journal
Standard or New 0.017 - 0.041 mm (0.0007 - 0.0016 inch)
Service Limit 0.050 mm (0.0020 inch)
No.3 journal
Standard or New 0.025 - 0.049 mm (0.0010 - 0.0019 inch)
Service Limit 0.055 mm (0.0022 inch)
Rod bearing clearance
K20A3 engine
Standard or New 0.020 - 0.050 mm (0.0008 - 0.0020 inch)
Service Limit 0.060 mm (0.0024 inch)
K20Z1 engine
Standard or New 0.033 - 0.061 mm (0.0013 - 0.0024 inch)
Service Limit 0.072 mm (0.0028 inch)
Main Bearing Cap
Tighten the bearing cap bolts in sequence to 29 Nm (3.0 kgf-m, 22 ft. lbs.).
Tighten the bearing cap bolts an additional 56°.
Tighten the 8 mm bolts in sequence to 22 Nm (2.2 kgf-m, 16 ft. lbs.).
Main Bearing Selection
Crankshaft Bore Code Location
Letters or bars have been stamped on the end of the block as a code for the size of each of the four main journal bores.
Use them, and the numbers stamped on the crankshaft (codes for main journal size), to choose the correct bearings. 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 solvent or detergent.
Main Journal Code Locations (Numbers or Bars)