Technical Data

Cylinder Block
Cylinder Bore Diameter:
Honing Dimension:
Standard Dimension 79.51 mm
1st Oversize 79.76 mm
2nd Oversize 80.01 mm

Cylinder Bore Taper:
Deviation From Nominal Dimension 0.10 mm

Cylinder Bore Out Of Round:
Deviation From Nominal Dimension 0.10 mm

Cylinder To Piston Clearance:
With Standard Piston Diameter 79.47 mm
Cylinder Bore Diameter 79.51 mm
With 1st Oversize Piston Diameter 79.72 mm
Cylinder Bore Diameter 79.76 mm
With 2nd Oversize Piston Diameter 79.97 mm
Cylinder Bore Diameter 80.01 mm

Crankshaft Journal Diameter and Limits:
Main Journal Diameter:
Standard Size 54.00 mm
Limits -0.022 to -0.042 mm
1st Undersize 53.75 mm
Limits -0.022 to -0.042 mm
2nd Undersize 53.50 mm
Limits -0.022 to -0.042 mm
3rd Undersize 53.25 mm
Limits -0.022 to -0.042 mm
Con-Rod Journal Diameter:
Standard Size 47.80 mm
Limits -0.022 to -0.042 mm
1st Undersize 47.55 mm
Limits -0.022 to -0.042 mm
2nd Undersize 47.30 mm
Limits -0.022 to -0.042 mm
3rd Undersize 47.05 mm
Limits -0.022 to -0.042 mm

Connecting Rod and Bearing Shell:
Axial clearance Wear limit 0.37 mm
Check radial clearance with Plastigage:
Wear limit 0.08 mm

Crankshaft and Main Bearing Shell:
Axial clearance:
New 0.07 to 0.17 mm
Wear limit 0.37 mm
Check radial clearance with Plastigage:
New 0.03 to 0.08 mm
Wear limit 0.17 mm

Piston Dimensions and Clearance:
With Standard Piston Diameter 79.47 mm
Cylinder Bore Diameter 79.51 mm
With 1st Oversize Piston Diameter 79.72 mm
Cylinder Bore Diameter 79.76 mm
With 2nd Oversize Piston Diameter 79.97 mm
Cylinder Bore Diameter 80.01 mm

Piston Ring Gap and Groove Clearance:
Ring Groove Clearance:
1st Compression Ring
New 0.06 to 0.09 mm
Wear Limit 0.25 mm
2nd Compression Ring
New 0.05 to 0.08 mm
Wear Limit 0.25 mm
Oil Scraper Ring
New 0.03 to 0.06 mm
Wear Limit 0.15 mm
Piston Ring Gap:
1st Compression Ring
New 0.20 to 0.40 mm
Wear Limit 1.00 mm
2nd Compression Ring
New 0.20 to 0.40 mm
Wear Limit 1.00 mm
Oil Scraper Ring
New 0.25 to 0.50 mm
Wear Limit 1.00 mm

Crankshaft Dowel Pin Projection





Dowel pin projection -3- out of crankshaft a = 2.5 to 3.0 mm

Piston installation position and piston/cylinder allocation





Piston in cylinders 1 and 2:
Larger intake valve chamber points toward flywheel (arrows)
Piston in cylinders 3 and 4:
Larger intake valve chamber points toward belt pulley side (arrows).

Note: New piston/cylinder allocations are shown by a colored mark on the piston crown.

^ Piston for cylinder 1 and 2: marked 1/2
^ Piston for cylinder 3 and 4: marked 3/4