Technical

/Technical

TEST

Cylinder Head Cores Minimum Thickness for Core Acceptance

 

Cummins Head
 Small Cam – N-14  Min. 4.35″
 L-10  Min. 3.925″
 4 and 6 BT  Min. 3.725″
Cat Heads
 
 3406 A and B  Min. 4.420″
 3406 E
 Min. 4.725″
Detroit Heads
 71 and 92  Min. 3.550″
 Series 60  Min. 6.490″
Cummins B.C. Valve Settings
   Intake   .011

Exhaust .023                         5″ Inch lbs.

    Valves                                   Injector

     5                                   3

     3                                   6

C       6                                   2

     2                                   4

B       4                                   1

C       1                                   5

 

Cummins B.C. Torque Specs.
Head Bolt:         310 Ft. lbs.

Mains: 1 1/2″    310 Ft. lbs

1 1/8″    265 Ft. lbs

Rods:                150 Ft. lbs

3208

diagram3208

Torque Specs
Mains 35 lb. ft. + 120 deg. = 2 flats
Rods 35 lb. ft. + 60 deg. = 1 flat
Head
60 / 100 lb. ft. / 3/8 – 35 lb. ft.
Rocker Shafts
25 lb. ft.
Valve Clearance
Int .015
Exh .025

 

3406 E

 

 Valve Adjustment  No. 1 TDC  Intake  1,2,4
 Intake – .015  Exhaust  1,3,5
 Exhaust – .030  No. 6 TDC  Intake  3,5,6
 Exhaust  2,4,6
 Inj. Adjustment  No. 1 TDC  3,5,6
 Turn 360 deg.  1,2,4
Jake – Slave Piston Lash Setting
 435 H.P.  .030 in.
 410 H.P.  .027 in.

3406 E Torque Specs

diagram3406E

Mains 200 lb.ft + 120 degrees
Rods 70 lb. + 90 degrees
Head 350 lb
Jakes (80 lb. bolts) (60 lb. nuts)
Injector  46 lb

Cam Side:

 

3406 B Torque Specs 

diagram3406

Mains 190 + 10 lb.ft + 120 degrees
Rods 65 lb.ft + 120 degrees
Head 345 lb.ft  /  3/8 bolts = 35 lb.ft
Jakes 100 lb.ft  / 48 lb.ft
Injector Retainer 40 lb.ft
Fuel Line hats 35 lb.ft

 

Valve setting clearance.
Ex.030
Int. 015

 No. 1 T.D.C.  Intake  1.2.4
   Exhaust  1.3.5
 360 Deg.  Intake  3.5.6
   Exhaust  2.4.6