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Rmldaytona
Rmldaytona, Certified Technician
Category: Dodge
Satisfied Customers: 1887
Experience:  ASE Certified. 12 years Automotive Experience.
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I am rebuilding a cummins 4BT diesel engine..intake..exhaust..valves

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I am rebuilding a cummins 4BT diesel engine. I would like to know what the torque specs for the rod bolts, main bolts, and head bolts are. Also, intake and exhaust valves settings.

Hello.

What do you mean by valve settings?

Also, what year, make, model and 8th # XXXXX the VIN?

 

 

Customer: replied 9 years ago.
What degrees do the valves open and close on?      CPL 1967 B3.9-C    serial#, 21298803

Sorry, can't help you with the valves part.

I will let all other experts jump in on the question.

Sorry.

 

Customer: replied 9 years ago.
We need the valve lash settings. The engine is a 1999

Ahhh, found it.

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  • Step 1-Tighten all bolts, in sequence, to 90 Nm (66 ft. lbs.) torque. Check the torque. If lower than 90 Nm (66 ft. lbs.) , tighten to this torque.
  • Step 2-Tighten all long 12 mm bolts (Nos. 4, 5, 12, 13, 20 and 21), in sequence, to 120 Nm (89 ft. lbs.) torque. Check the torque. If lower than 120 Nm (89 ft. lbs.) , tighten to this torque.
  • Step 3-Tighten all bolts, in sequence, an additional 90 degrees.

VALVE LASH

Intake 0.254 mm (0.010 inch)

 

Exhaust 0.508 mm (0.020 inch)

Note: Adjust valves when the engine is cold, below 60°C (140 °F) .

ROD BEARINGS

 

Pin Bore Diameter (Max.) 40.042 mm (1.5764 inch)

 

Side Clearance 0.100 - 0.300 mm (0.004 - 0.012 inch)

TORQUE:

 

Step 1 - Preliminary 35 Nm (26 ft. lbs.)

 

Step 2 - Secondary 70 Nm (51 ft. lbs.)

 

Step 3 - Final 100 Nm (73 ft. lbs.)

MAIN BEARING BOLTS:

 

Step 1 - Preliminary 60 Nm (45 ft. lbs.)

 

Step 2 - Secondary 119 Nm (88 ft. lbs.)

 

Step 3 - Final 176 Nm (129 ft. lbs.)

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Rmldaytona and 6 other Dodge Specialists are ready to help you

Hey,Customer

Did you get the specs???