What are the engine specs for the 4ac motor?

Posted 17 March 2009 - 03:23 PM

i was looking for this information for 4 hours "sigh"

finally found it, so for anyone that needs it, here you go

Engine specifications are the same from 1984 to 1987 for there respective engines.

Model: 4A-C

Type: 4 cylinder in-line, SOHC

Displacement: 96.8 cu. in. (1587 cc)

Bore and Stroke: 3.2 x 3.0 in. (81.0 x 77.0 mm)

Compression Ratio: 9.0 : 1

Compression Pressure: STD 163 psi @ 250 RPM, LIMIT 128 psi

HP (SAE Net): 70 HP @ 4800 RPM

Torque (SAE Net): 85 Ft./lbs @ 2800 RPM

Valve Timing:

Intake Opens: 18 BTDC

Intake Closes 46 ATDC

Exhaust Opens: 52 BTDC

Exhaust Closes: 12 ATDC

Spark Plug Type: /California /Federal

Nippondenso /W16EXR-U11 /W16EXR-U11

/W14EXR-U11

NGK /BPR5EA-L11 /BPR5EA-L11

/BPR5EY11 /BPR5EA11

/BPR5EY11 or BPR4EY11

Spark Plug Gap: 0.043 in. (1.1mm)

Firing Order: 1-3-4-2

Ignition Timing: 5 BTDC @ Max. 950 RPM (With vacuum advance off)

NOTE M/T and A/T in "N" range

Valve Clearance:

Intake (Hot): 0.008 in. (0.20 mm)

Exhaust (Hot): 0.012 in. (0.30 mm)

Cooling System:

Type: Water Cooled

Radiator: Vertical flow fin and tube

Radiator Cap Pressure: 10.7-14.9 psi (0.75-1.05 kg/sq. cm)

Waterpump: Centifugal v-belt drive

Thermostat Valve Opening: 190 F (88 C)

Capacity: 5.9 qt. (5.6 liter) M/T

With Heater: 5.8 qt. (5.5 liter) A/T

Fuel System:

Type of Carburetor: Downdraft, 2 Barrel

Fuel Pump: Mechanical Diaphragm

Fuel Pressure: 2.5-3.5 psi (0.18-0.25 kg/ sq. cm)

Fuel Filter Type: Paper Filter Element (flow through)

Fuel Tank Capacity: 13.2 gal. (50 liter)

Fuel Grade: USE UNLEADED FUEL ONLY (Research Octane No. 91 Anti Knock

Index 87 or Higher)

Lubrication System:

Type: Mechanical

Oil Pump: Gear Type

Oil Filter Capacity: 0.3 qt.

Recommended Motor Oil: API grade SF or better

Oil Capacity /w Filter: 3.5 qt. (3.3 liter)

Electrical System:

Battery (volts/ amp hours): 12V/50A - hr

Alternator (volts/ amps): 12V/55A

Starter Motor (volts/ kW): 12V/1.0 KW M/T - 12V/1.4 KW A/T