CAT D379, D398, D399 Specs, bolt torques and manuals

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Your Diesel Engine Specs

Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque.
Essential bolt tightening torques are the main bearing cap bolt torque, the connecting rod cap bolt torque and the cylinder head bolt torques.


Some Popular Engine Specs


Cat D379 D398 and D399 bolt torques, 
manuals and engine specs

Cat D379 D398 and D399 essential bolt torques

Main Bearing Bolts
Step 1 = 200 lb.ft, 270 Nm
Step 2 = +120°

Connecting Rod Bolts
Step 1 = 40 lb.ft, 55 Nm
Step 2 = +120°

Cylinder head Bolts
step 1 - 150 lb.ft, 205 Nm
step 2 - 230 lb.ft, 312 Nm
step 3 - Repeat Step 2

Cat D379 D398 and D399 manuals and spec sheets

Cat D379 D398 and D399 engine specs

CATERPILLAR D379 D398 and D399
Displacement and arrangement:
D379 - 32.2 liter, 1,964 CID 
 V8, 4-stroke-cycle diesel  
 
D398 - 48.3 liter, 2,945 CID 
 V12, 4-stroke-cycle diesel 
      turbo aftercooled engine
	  
D399 - 64.4 liter, 3,927 CID
  v16,  4-stroke-cycle diesel 
   turbo aftercooled engine

Same bore and stroke for all three: 
Bore - 6.25 in, 159 mm	 
Stroke - 8.0 in, 203 mm
Dimensions:
D379 approx:
length - 139 in, 3534 mm 
(incl heat exchanger)
width - 63 in, 1600 mm
height - 90 in, 2250 mm

D398 approx:
length - 161 in, 4097 mm 
(incl heat exchanger)
width - 63 in, 1600 mm
height - 90 in, 2250 mm

D399 approx:
length - 186 in, 4720 mm 
(incl heat exchanger)
width - 63 in, 1600 mm
height - 90 in, 2250 mm
Power 
D379 - 
500-625 hp, 373-466 kW @1225 rpm

D398 - Marine TA
737-938 hp, 560-700 kW @1225 rpm

D399 - Marine TA
1000-1250 hp, 746-932 kW @1225 rpm


Weight:
engine weight dry approx:
D379 - 11775 lb, 5340 kg
D398 - 14825 lb, 6723 kg
D399 - 17660 lb, 8009 kg




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email: steve@barringtondieselclub.co.za
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