TORQUE VALUES & TUNE UP SPEC's FOR DATSUN ROADSTERS
by Thomas Walter C 1996


R-16 (1600cc OHV) Engine:

Headbolts (aluminum head)     50
          (steel head)        50 (1)
Connecting rod bolts          45
Main caps (3 main - SAE)      75
          (5 main - Metric)   65
Flywheel to crankshaft        35
Manifolds                     10
Camshaft bolt                 30
Valve Cover                   10
Crank Pulley                 100 (2)


U-20 (2000cc OHC) Engine:

Headbolts                     65 ft-lb.
Connecting rod                65
Main Caps                     65
Flywheel                      60
Manifolds                     10
camshaft (two bolts)          13
jackshaft                     35
Valve cover                    5
Clutch cover                  25
Crank Pulley                 150


Notes

(1) I know I have seen different specs
for the aluminum and steel heads. The bolts are
the same, but the early Bob Sharp manual recommended
60 ft-lbs. for the steel head when used for racing,
otherwise 45 to 50 ft.lbs.

(2) I've see it also listed at 150 ft-lbs.
Metric engines specified 145 ft-lbs; Early SAE
engine listed only 100 ft-lbs.


COMMON TUNE UP NUMBERS

Valve clearance:

1500/1600           all  .017" HOT (Recommended)
                         .021" Cold
2000             intake  .008" HOT
                 exhaust .012" HOT

Points                   .018-.021"
     dwell                 49-52 degrees

Plugs                    .027-.031"

Ignition Timing (at idle)
     '66-'67 1600        16 BTDC at 600 rpm
     '68-'70 1600         0  TDC at 700 rpm
     '67 Su 2000         16 BTDC at 700 rpm
     '67 Solex 2000      20 BTDC at 600 rpm
     '68-'70 2000         0  TDC at 700 rpm


THE ABOVE ASSUMES A STOCK ORIGINAL DISTRIBUTOR -
after 25 years, check what is in there! Look for
the DISTRIBUTOR FAQ for details on what to check.