3208 INDUSTRIAL ENGINE ATTACHMENTS – Cylinder Block

Measure wear of the cylinder bore at the top and bottom of piston ring travel.

(1) Cylinder bore [standard, original size] … 114.300 to 114.338 mm (4.5000 to 4.5015 in)

The recommendation is made to make the cylinder bore the next size larger when the size of the bore is … 114.452 mm (4.5060 in)

Cylinder bore must be made the next size larger when the size of the bore is … 114.529 mm (4.5090 in)

Cylinder bore [0.51 mm (.020 in) larger than the original size] … 114.821 ± 0.013 mm (4.5205 ± .0005 in)

The recommendation is made to make the cylinder bore the next size larger when the size of the bore is … 114.960 mm (4.5260 in)

Cylinder bore must be made the next size larger when the size of the bore is … 115.037 mm (4.5290 in)

Cylinder bore [1.02 mm (.040 in) larger than the original size] … 115.329 ± 0.013 mm (4.5405 ± .0005 in)

Maximum permissible wear of cylinder bores (replacement of the cylinder block is necessary) … 115.545 mm (4.5490 in)

(2) Bore in block for camshaft bearing … 67.374 ± 0.013 mm (2.6525 ± .0005 in)

NOTE: Install camshaft bearings with the oil hole toward the top of the cylinder block.

(3) Width of main bearing cap … 166.624 ± 0.018 mm (6.5600 ± .0007 in)

Minimum permissible width of main bearing cap … 166.573 mm (6.5580 in)

Width of main bearing cap guide (in cylinder block) … 166.599 ± 0.013 mm (6.5590 ± .0005 in)

(4) Bore in block for main bearing … 94.170 ± 0.013 mm (3.7075 ± .0005 in)

Permissible amount of crankshaft line bore distortion … 94.13 to 94.21 mm (3.706 to 3.709 in)

(5) Torque for bolts holding caps for main bearings:

a. Put 2P2506 Thread Lubricant on bolt threads and washer face.

b. Tighten all bolts in number sequence to … 40 ± 4 N·m (30 ± 3 lb ft)

c. Put a mark on each bolt and cap.

d. Tighten all bolts in number sequence from mark … 120 ± 5 degrees.

(6) Dimension (new) from centerline of crankshaft bearing bore to bottom of block (pan rails) … 95.250 ± 0.038 mm (3.7500 ± .0015 in)

(7) Dimension (new) from centerline of crankshaft bearing bore to top of block (top deck) … 322.66 ± 0.13 mm (12.703 ± .005 in)