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Iveco NEF mechanical engine models, F4AE thru F4HE
Essential Diesel Engine Bolt Tightening Torques

 

Iveco NEF Main Bearing Caps
Step 1 = 50 Nm, 37 lb.ft
Step 2 = 80 Nm, 60 lb.ft
Step 3 = +90 degrees

Iveco NEF Connecting Rod Bolts
Step 1 = 30 Nm, 22 lb.ft
Step 2 = 60 Nm, 45 lb.ft
Step 3 = +60 degrees

Iveco NEF Cylinder Head Bolts
M12 X 70 bolts only
Step 1 = 50 Nm, 37 lb.ft
Step 2 = +90 degrees

M12 X 140 bolts only
Step 1 = 40 Nm, 30 lb.ft
Step 2 = +180 degrees

M12 X 180 bolts only
Step 1 = 70 Nm, 52 lb.ft
Step 2 = +180 degrees

Iveco NEF mechanical engine models F4BE thru F4HE: Diesel Engine Specs

 

Iveco NEF, F4BE
Compression ratio, bore, stroke and displacement


Compression Ratio
17.5:1

Bore
102.0 mm, 4.016"

Stroke
120.0 mm, 4.724"

Displacement
4 cylinder engine
3.922 liter, 239 CID

6 cylinder engine
5.883 liter, 542 CID

Iveco NEF, F4GE
Compression ratio, bore, stroke and displacement


Compression Ratio
17.5:1

Bore
104.0 mm, 4.094"

Stroke
132.0 mm, 5.196"

Displacement
4 cylinder engine
4.485 liter, 274 CID

6 cylinder engine
6.728 liter, 411 CID

Iveco NEF, F4BE Power

4 cylinder engine
74-95 kW, 101-129 hp @ 2000-2100 rpm

6 cylinder engine
111-142 kW, 151-194 hp @ 2000-2100 rpm

Iveco NEF, F4GE Power

4 cylinder engine
74-95 kW, 101-129 hp @ 2100-2300 rpm

6 cylinder engine
111-142 kW, 151-194 hp @ 2100-2300 rpm


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