Skip to main content 

Inter Club Navigation
home image Home Page 
  contact us Contact Us  
  engine outline Engine List   technical services Technical   video indicatorVideos  



Popular Diesel Engine Specs



 

Detroit Diesel MBE 4000 Essential Diesel Engine Bolt Tightening Torques

 
MBE4000 Main Bearing Bolts

Caution - stretch bolts
refer to manual for limits 

step 1 = 100 Nm, 74 lb.ft
step 2 = 200 Nm, 148 lb.ft
step 3 = 300-330 Nm, 221-243 lb.ft
step 4 = + 90 degrees





Click for Detroit Diesel 
MBE 4000 
engine manuals and specs
 
MBE4000 Connecting Rod Bolts

Caution - stretch bolts
refer to manual for limits  

step 1 = 100 Nm, 74 lb.ft
step 2 = + 90 degrees







Click for Detroit Diesel 
MBE 4000 
engine manuals and specs
 
MBE4000 
Cylinder Head Bolts

Caution - stretch bolts
refer to manual 
for stretch limits 

step 1 = 10 Nm, 7 lb.ft
step 2 = 50 Nm, 37 lb.ft
step 3 = 100 Nm, 74 lb.ft
step 4 = 200 Nm, 148 lb.ft
step 5 = + 90 degrees
step 6 = + 90 degrees

Click for Detroit Diesel 
MBE 4000 
engine manuals and specs
 

Detroit Diesel MBE 4000 manuals and spec sheets

 

Detroit Diesel MBE 4000 Technical Issues

 

Detroit Diesel MBE 4000 Cylinder Heads Leaking

 

Detroit Diesel MBE4000 Cylinder head Bolts are stretch bolts!
The MBE4000 head bolts, because there are stretch bolts, loose their clamping force on reuse, and unless they are strictly within the manufactures stretch limits, should not be used again otherwise leaks will occur.
Stretch bolts, when properly torqued, loose some of their diameter to the stretch, but in correct use are elastic, and if variations in the gasket material or other things occur they keep their clamping force by varying their diameter slightly, but frequently, like breathing. The clamping force of stretch bolts is necessary to retain the inevitable variations of the cylinder head and its composite gasket material deformations due to heat etc. and they automatically keep the necessary clamping force on the head gaskets for them not to not leak.

Steve, BDC, Nov 2017


Info from a Detroit Diesel MBE 4000 DDEC Report

 

MBE 4000 DDEC stats
Top Speed
Highest recorded speed
96 mph, 154 kph

Current Milage
1 231 371 miles, 1 981 645 kilometers

Fuel Consumption
5.83 US gal/hour, 22.07 liters per hour

Fuel Economy
6.49 miles per gallon, 2.759 kilometers per liter, 36.24 liters per 100 km

Click for Detroit Diesel MBE 4000  engine manuals and specs 


Cylinder Head Stretch Bolts v Non-Stretch Studs and Nuts

 

Replacing Stretch Bolts with standard (non-stretch) studs and nuts

  Non-Stretch Studs
Not withstanding the above technical information provided concering strecth bolts, some owners have nevertheless chosen to replace the stretch bolts with non-stretch studs and nuts, which I am told, are doing a good job resulting in a leak-free engine.
Steve, BDC, April 2018

Feedback on Replacing Stretch Bolts with standard (non-stretch) studs and nuts

  Greg updated us a year after doing the job as follows: I had the valve covers taken off a month or so ago and according to the very experienced mechanic who did it, there was no evidence whatsoever of coolant leakage. Furthermore, I don't recall having to add any coolant in the past year, and if I did it would have only been a minor amount once, but I don't recall for sure at the moment.
Steve, BDC, December 2018


Detroit Diesel MBE 4000 Additional Technical Info

 
MBE4000 DDEC Print Out
Download Detroit Diesel MBE4000 DDEC Print Out
Old Faithful with MBE4000 engine
View 'Old-Faithful Semi' with Detroit Diesel MBE4000 engine
MBE4000 engine dynamometer report
Detroit Diesel MBE4000 engine dynamometer report - click to download

 

Detroit Diesel MBE 4000 Diesel Engine Specs

 
MBE 4000 
Arrangement, displacement, 
bore and stroke

Arrangement
Inline 6 Cylinder
turbocharged

Displacement
12.8 liter, 781 CID

Bore
128 mm, 5.04 in

Stroke
166 mm, 6.54 in

Click for Detroit Diesel MBE 4000 
engine manuals and specs
 
MBE 4000 
Compression ratio, weight 
and electronics

Compression ratio
18.0:1

Weight approx
1030 kg, 2270 lb

Electronics
DDEC VI





Click for Detroit Diesel MBE 4000 
engine manuals and specs
 

MBE 4000 
Power and torque

Power
from
370 hp, 276 kW @ 1900 rpm

to
450 hp, 336 kW @ 1900 rpm

Torque
from
1250 lb.ft, 1695 Nm @ 1100 rpm

to
1550 lb.ft, 2100 Nm @ 1100 rpm

Click for Detroit Diesel MBE 4000 
engine manuals and specs
 
MBE 4000 
Dimensions approx

length 1339 mm, 53 in
width 1069 mm, 42 in 
height 1130 mm, 45 in


Click for Detroit Diesel MBE 4000 
engine manuals and specs
 




Page Revision #9.1RS 12-18