Tune Up

Tune Up

Tune Up/Maintenance


Firing Order 1-4-3-2
Point Gap .16" -.020"
Dwell Angle 44-50 Degrees
Total Advance 30-34 Degrees
Spark Plug Gap

.024" - .028"

Oil Capacity (stock) 2.65 Qts
Transmission Capacity 3.15 Qts New, 2.65 Qts Refill

Valve Specifications


1300cc Exhaust Valve 30mm
1300cc Intake Valve 33mm
1500/1600cc Exhaust Valve 32mm
1500/1600cc Intake Valve 35.5mm
Aftermarket valves 35.5,37,40,42,44mm
Valve Lash (cold) .004"-.006"
Rocker Arm Side Clearance .005"

Camshaft Specs


Camshaft End Play .0016"-0051"
Cam Gear Backlash 000-.002"
Lifter to Cam, Clearance at Full Lift .040"
Oil Pump Drive Gear .200"-.250"

Crankshaft Dimensions


1500/1600cc Stroke 69mm
Crankshaft End Play .003"-.005"
Distributor Drive End Play .005"-.020"
#1, 2, & 3 Main Journal 2.1640"-2.1648"
#4 Main Journal 1.5739"-1.5748"

Main Bearing Dimensions


Standard 2.560"
+.020" 2.580"
+.040" 2.600"
+.060" 2.620"
+.080" 2.624"

Main Bearing Thrust


Standard .865"
+.040" .825"
+.080" .785"

Rod Dimensions


13/15/1600cc 5.394" Length 2.165" Bearing Diameter
Side Clearance .004"-.016"
Wrist Pin Diameter 22mm (.866")
Stock Rods install with forged mark facing upward