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Diesel engine spec's and manuals for F4 models of the Iveco NEF engine family - amp

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Essential bolt torques are:
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 connecting rod cap bolts
cylinder head bolt torques
 


 
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Specs, Manuals and Bolt torques for F4 models of the Iveco NEF engines - amp

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

 


Iveco NEF models
F4AE thru F4HE
Main Bearing Caps 

Step 1 = 50 Nm, 37 lb.ft 
Step 2 = 80 Nm, 60 lb.ft
Step 3 = +90 degrees 


Click for Iveco
F4AE thru F4HE
engine manuals and specs 



Iveco NEF models
F4AE thru F4HE
Connecting Rod Bolts 

Step 1 = 30 Nm, 22 lb.ft 
Step 2 = 60 Nm, 45 lb.ft
Step 3 = +60 degrees 


Click for Iveco
F4AE thru F4HE
engine manuals and specs 


Iveco NEF models
F4AE thru F4HE
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       


Click for Iveco
F4AE thru F4HE
engine manuals and specs 




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


Click for Iveco
F4AE thru F4HE
engine manuals and specs 



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


Click for Iveco
F4AE thru F4HE
engine manuals and specs 



Iveco NEF 
Power 

F4BE

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

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

F4GE

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

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


Click for Iveco
F4AE thru F4HE
engine manuals and specs 






 
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