Cylinder Block - Inspection (Cont'd): Cylinder Block Distortion / Cylinder Bore

EM-244spec table

Cylinder bore standard diameters and wear/out-of-round limits differ between CD17 and CD20.

Inspection (Cont'd)

CYLINDER BLOCK DISTORTION

Clean upper face of cylinder block and measure the distortion.

Specification	Value
Distortion limit0.0039 in	0.10mm

Distortion limit0.0039 in

0.10mm

If out of specification, resurface it.

IMPORTANT

The resurfacing limit of cylinder block is determined by cylinder head resurfacing in an engine. Amount of cylinder head resurfacing is "A". Amount of cylinder block resurfacing is "B". The maximum limit is as follows: A + B = 0.1 mm (0.004 in)

If necessary, replace cylinder block.

CYLINDER BORE

Cylinder Bore Inspection

1
Check for scratches or seizure. If seizure is found, hone bore.
SEM704D
2
Using a bore gauge, measure cylinder bore for wear, out-of-round or taper. Standard bore diameter: CD17 80.000 - 80.050 mm (3.1496 - 3.1516 in); CD20 84.500 - 84.550 mm (3.3268 - 3.3287 in).

Specification	Value
Standard bore diameter (CD17)3.1496 - 3.1516 in	80.000 - 80.050mm
Standard bore diameter (CD20)3.3268 - 3.3287 in	84.500 - 84.550mm

Standard bore diameter (CD17)3.1496 - 3.1516 in

80.000 - 80.050mm

Standard bore diameter (CD20)3.3268 - 3.3287 in

84.500 - 84.550mm

Cylinder Bore Wear / Out-of-round / Taper (Unit: mm (in))

	CD17	CD20
Bore wear limit	0.1 (0.004)	0.2 (0.008)
Out-of-round standard	0.04 (0.0016)	0.015 (0.0006)
Taper (A - B) standard	0.04 (0.0016)	0.04 (0.0016)

Bore wear limit

CD170.1 (0.004)

CD200.2 (0.008)

Out-of-round standard

CD170.04 (0.0016)

CD200.015 (0.0006)

Taper (A - B) standard

CD170.04 (0.0016)

CD200.04 (0.0016)

If it exceeds the limit, rebore all four cylinders. Replace cylinder block if necessary.