Valve
Clearance
Intake
0.08 in.
0.20 mm
0.010 in.
0.25 mm
Exhaust
0.010 in.
0.25 mm
0.012 in.
0.30 mm
Quick - Spec's HOME
Datsun / Nissan OHC  
Stock  L20b (1952 cc)  
1975 -1980 HL-620  
HorsePower
@ RPM
112 @ 5600
Bore X Stroke
3.35 X 3.39
Oil Press
50 - 57 (psi)
Ft. lbs. Torque
@ RMP
108 @ 3200
Piston Size
3.3451 - 3.3470 in
Firing Order
1, 3, 4, 2
Compression
Ratio
8.5:1
Cranking Comp
171 (psi)
Block Height
285.5
Motor
Year
1975
1976 - 77
1978
1979
1980
Engine
Oil
5.1 qts.
4.5 qts.
4.5 qts.
4.5 qts.
4.5 qts.
Engine
Coolent
6.3 qts.
8.5 qts.
9.3 qts.
9.3 qts.
9.3 qts.
Idle
Speed
7501 6502
7501 6502
6001 6002
6501 6302
6001 6002
Ignition
Timming
--1,3 12B2
--1,3 12B2
12B
12B
12B4
Plug
Gap
.034 in
--5
.041 in
.041 in
.041 in
Distributor
Air Gap
.020
--6,7
--7
--8
--8
Dwell
Angle
52
--6
--
--
--
1 Manual Transmission
2 Auto Transmission (tranny in drive)
3 49 states: 12B, Calif.: 10B
4 Californis heavy duty:10B
5 Point type: .033 in, Transistor type: .041 in
6 Point type ignition: Dwell 52; Gap .020 in
7 Transistor type ignition air Gap: .008 - .016 in
8 Transistor type ignition air Gap: .012 - .020 in
 
Page last updated on Tuesday, April 1, 2014
 
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