Cat 3044C Engine Parts and Service Technical Information, Updated information for the Cat C3.4 DIT is available here: www.C34DIT.com

Four Cylinder In-Line Water Cooled Diesel
Bore: 94 MM  3.701 Inch
Stroke: 120 MM 4.724 Inch
Firing Order: 1-3-4-2
Rotation: counterclockwise viewed from flywheel

Overhead Intake Valves, Overhead Exhaust Valves,
Intake Valve Timing: Open BTDC 18 degrees  Close ABDC 54 degrees
Exhaust Valve Timing: Open BBDC 66 degrees  Close ATDC 22 degrees
Valve Clearance ( engine cold ) Inlet Valve 0.25MM ( 0.0098 Inch )
Valve Clearance ( engine cold ) Exhaust Valve 0.25MM ( 0.0098 Inch )
Valve Angle: Inlet Valve 30 degrees , Exhaust Valves 30 degrees,
Head Bolt Torque: 83.2 - 90.4   Ft Lbs
Cylinder Head Bolt Tightening Sequence and Head Bolt Torque
Click here to view and print the head bolt tightening sequence.

Standard Cylinder Bore Inside Diameter 94.00 MM - 94.035 MM  
Oversize Bore 0.25MM Oversize Cylinder Bore Inside Diameter 94.25 MM - 94.285 MM  
Oversize Bore 0.50MM Oversize Cylinder Bore Inside Diameter 94.50 MM - 94.535 MM

Standard Piston Outside Diameter 93.955 MM - 93.985 MM
Click here to view and print the Standard Piston and Standard Piston Ring Measurements
Oversize Piston 0.25MM Oversize Piston Outside Diameter 94.205 MM - 94.235 MM
Oversize Piston 0.50MM Oversize Piston Outside Diameter 94.455 MM - 94.485 MM
Click here to view and print the Oversize Piston and Oversize Piston Ring Measurements
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Main Bearing Bolt Torque 72.3 Ft Lbs - 79.6 Ft Lbs
Click here to view and print the Main Bearing Bolt Torque
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Connecting Rod Bearing Bolt Torque 36.2 Ft Lbs - 43.4 Ft Lbs
Click here to view and print the Connecting Rod Bearing Bolt Torque
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Crankshaft Main Bearing Journal Standard Size 77.955 MM - 77.970 MM
Click here to view and print the Crankshaft Main Bearing Journal Standard Size
Crankshaft Main Bearing Journal Undersize 0.25 MM  .010 " Size 77.705 MM - 77.720 MM
Crankshaft Main Bearing Journal Undersize 0.50 MM  .020 " Size 77.455 MM - 77.470 MM
Crankshaft Main Bearing Journal Undersize 0.75 MM  .030 " Size 77.205 MM - 77.220 MM
Crankshaft Main Bearing Journal Undersize 1.00 MM  .040 " Size 76.955 MM - 76.970 MM

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Connecting Rod Crankshaft Journal Standard Size 57.955 MM - 57.970 MM
Click here to view and print the Connecting Rod Crankshaft Journal Standard Size
Connecting Rod Crankshaft Journal Undersize 0.25MM  0.010" Size 57.705 MM - 57.720 MM
Connecting Rod Crankshaft Journal Undersize 0.50MM  0.020" Size 57.455 MM - 57.470 MM
Connecting Rod Crankshaft Journal Undersize 0.75MM  0.030" Size 57.205 MM - 57.220 MM
Connecting Rod Crankshaft Journal Undersize 1.00MM  0.040" Size 56.955 MM - 56.970 MM




Engine ReRing Kit includes:
piston rings, big end connecting rod bearings, main crankshaft bearings, thrust washers,
complete engine gasket and seal set with head gasket, valve seals, front crankshaft seal and rear crankshaft seal,
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Rings Size Options:  Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" ,
Rod Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" , 
Main Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" ,
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Engine Overhaul Kit includes:
pistons, piston rings, piston pins, piston pin retainers,
big end connecting rod bearings, main crankshaft bearings, thrust washers,
piston pin/small end connecting rod bushings,
complete engine gasket and seal set with head gasket, valve seals, front crankshaft seal and rear crankshaft seal,
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Piston and Rings Size Options:  Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" ,
Rod Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" , 
Main Bearing Size Options: Standard , 0.25 MM , 0.010" , 0.50 MM , 0.020" , 0.75 MM , 0.030" , 1.00 MM , 0.040" ,
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Cylinder Head Rebuild Kit includes:
intake valves, exhaust valves, intake valve guides, exhaust valve guides,
intake valve seats, exhaust valve seats, valve springs, valve spring retainers, valve keepers,
( note: the valve stem seals are in the Engine ReRing Kits and Engine Overhaul Kits )
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Additional parts are available:
Connecting Rod
Crankshaft
Engine Oil Pump
Engine Water Pump
Camshaft
Lifters
Injectors
Head Bolt Sets
Connecting Rod Bolt Sets
Main Cap Bolt Sets
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Note: The newer C3.4 DIT engines can have different compression ratios, different pistons, different crankshafts