Vehicle Overview

The Nissan Datsun Fairlady 2000, known internally as the SR311 and SRL311 depending on market designation, represents the zenith of Nissan's first-generation sports car development. Introduced as the ultimate expression of the platform that began with the Fairlady 1500 and evolved through the 1600, the Fairlady 2000 was engineered to compete head-to-head with the most respected European roadsters of its era. From its introduction in the late 1960s through the end of production, the Fairlady 2000 maintained its position as the most powerful and refined iteration of Nissan's pioneering sports car lineage.

The defining element of the Fairlady 2000 is the J20 engine, a 2,000cc single-overhead-cam inline-four that represented a significant step forward in both displacement and engineering sophistication over its predecessor. Developing between 105 and 145 horsepower depending on market specification and carburetor configuration, the J20 provided torque-rich performance that transformed the Fairlady from a nimble light roadster into a genuine grand tourer capable of sustained high-speed cruising. The engine's robust bottom end featured a forged crankshaft with five main bearings, forged connecting rods, and semi-hemispherical combustion chambers that supported efficient breathing and reliable high-rpm operation.

The chassis carried forward the ladder-frame architecture familiar from earlier Fairladies but incorporated revised geometry, stiffer bushings, and improved damping characteristics. Front disc brakes became standard on most variants, providing the stopping power demanded by the additional performance. The body received updated styling with a longer, lower profile that echoed contemporary GT design language. Whether in right-hand drive SR311 configuration for the Japanese domestic market or left-hand drive SRL311 for export, the Fairlady 2000 remains one of the most compelling entries in Nissan's storied heritage.

SERVICE & REPAIR SCOPE

• J20 engine complete rebuild covering cylinder head decarbonizing with valve guide replacement, camshaft lobe profile and bearing journal measurement, timing chain and tensioner inspection, crankshaft regrinding to undersize specifications, connecting rod side clearance measurement, piston-to-bore clearance verification, and full oil pump overhaul
• Carburetor service for twin SU HS6 or Hitachi units including throttle shaft bushing replacement, jet recalibration, accelerator pump diaphragm inspection (Hitachi), float adjustment, and twin-carb balance procedures
• Ignition system maintenance covering distributor cap and rotor inspection, contact point gap and dwell angle setting, centrifugal advance spring tension verification, vacuum advance diaphragm leak check, coil output testing, and complete ignition timing procedure
• Clutch hydraulic system service where applicable, single-plate clutch inspection, pressure plate warpage check, flywheel resurfacing to specified limits, pilot bearing replacement, and clutch fork pivot inspection
• Four-speed manual transmission overhaul with gear tooth inspection, synchronizer ring thickness versus spec, shift drum inspection, bearing clearance measurement, and specified lubricant type and capacity
• Driveshaft balance check, differential ring and pinion setup with pinion depth shim selection, backlash measurement, carrier bearing preload adjustment, and side seal replacement
• Front suspension complete service with upper and lower ball joint load and drag torque testing, control arm bushing pressing, coil spring free length and rate verification, shock absorber gas-charge pressure check, and anti-roll bar bushing replacement
• Rear leaf spring service with arch height measurement, center bolt tension check, shackle pin replacement, and pinion angle alignment for vibration elimination
• Front disc brake service including pad replacement, caliper piston seal replacement and bore hone, rotor thickness and lateral runout measurement, and proportioning valve function test
• Rear drum brake overhaul with new shoes, wheel cylinder rebuild with fresh seals, brake pipe inspection, and complete system bleeds
• Wiring harness diagnosis with complete circuit diagrams for all market versions, charging system troubleshooting between generator and alternator variants, and accessory circuit repair
• Steering gear overhaul including worm gear and roller inspection, lash adjustment, sector shaft seal replacement, and alignment settings for camber, caster, and toe-in
• Cooling system diagnostics including radiator cap pressure testing, thermostat opening specification, water pump seal leak detection, and heater core flushing procedure
• Exhaust system inspection for manifold cracking, gasket condition, and complete routing with heat shield positioning
• Soft-top replacement, interior door panel removal, gauge cluster repair, and body panel alignment for proper door and trunk fitment

TECHNICAL SPECIFICATIONS

• Engine: Nissan J20 SOHC inline-four, 85.0 mm bore x 88.0 mm stroke, 1,999 cc
• Compression ratio: 9.0:1 to 10.5:1 depending on market and specification
• Maximum power: 105-145 hp (varies by market, year, and carburetor configuration)
• Induction: Twin SU HS6 or Hitachi carburetors
• Transmission: 4-speed fully synchronized manual, floor shift
• Clutch: Single dry plate, hydraulic actuation
• Frame: Separate ladder type
• Front suspension: Independent, unequal-length A-arms, coil springs, anti-roll bar
• Rear suspension: Live axle, semi-elliptic leaf springs
• Brakes: Front disc / rear drum
• Steering: Recirculating ball
• Wheelbase: 2,220 mm

DIAGNOSTIC INFORMATION

The diagnostic sections provide structured fault-finding procedures for every major system. Engine troubleshooting covers low compression investigation (distinguishing ring, valve, and head gasket causes), oil pressure warnings (pressure relief valve versus bearing wear), valve train noise identification, and carburetor imbalance diagnosis. The electrical troubleshooting flowchart addresses no-charge conditions, parasitic draw location, intermittent ignition failures, and instrument backlighting repair. Transmission diagnosis includes procedures for differentiating synchro failure from bearing noise, diagnosing shift linkage binding, and detecting oil seal leaks at input and output shafts.

ILLUSTRATIONS & DIAGRAMS INCLUDED

Complete set of factory-quality illustrations including J20 engine cut-away views showing oil flow paths, cylinder head combustion chamber section, full carburetor exploded diagrams, wiring schematics for all market variants with pin-out identification, suspension geometry diagrams with pivot point locations, brake system hydraulic circuit layouts, differential bearing preload assembly sequence illustrations, steering gear adjustment diagrams, and body trim identification charts. All fastener torque values and wear limits are clearly tabulated throughout.

COMPATIBILITY

Covers Nissan Datsun Fairlady 2000 models across the 1965-2000 model range under SR311 (RHD) and SRL311 (LHD) chassis designations. Includes all market variants, engine tune specifications, and mid-production running changes. Applicable to both the standard roadster and any special edition or competition-oriented variants produced during this period.

FILE PROPERTIES

Searchable PDF format viewable on any device running Windows, MacOS, or Linux operating system. Pages can be zoomed for fine detail reading and fully printable in whole or by section. English language. Instant digital download - no shipping costs or delays, access your manual anywhere and anytime from any connected device.

Vehicle Overview

The Nissan Datsun Fairlady 2000, known internally as the SR311 and SRL311 depending on market designation, represents the zenith of Nissan's first-generation sports car development. Introduced as the ultimate expression of the platform that began with the Fairlady 1500 and evolved through the 1600, the Fairlady 2000 was engineered to compete head-to-head with the most respected European roadsters of its era. From its introduction in the late 1960s through the end of production, the Fairlady 2000 maintained its position as the most powerful and refined iteration of Nissan's pioneering sports car lineage.

The defining element of the Fairlady 2000 is the J20 engine, a 2,000cc single-overhead-cam inline-four that represented a significant step forward in both displacement and engineering sophistication over its predecessor. Developing between 105 and 145 horsepower depending on market specification and carburetor configuration, the J20 provided torque-rich performance that transformed the Fairlady from a nimble light roadster into a genuine grand tourer capable of sustained high-speed cruising. The engine's robust bottom end featured a forged crankshaft with five main bearings, forged connecting rods, and semi-hemispherical combustion chambers that supported efficient breathing and reliable high-rpm operation.

The chassis carried forward the ladder-frame architecture familiar from earlier Fairladies but incorporated revised geometry, stiffer bushings, and improved damping characteristics. Front disc brakes became standard on most variants, providing the stopping power demanded by the additional performance. The body received updated styling with a longer, lower profile that echoed contemporary GT design language. Whether in right-hand drive SR311 configuration for the Japanese domestic market or left-hand drive SRL311 for export, the Fairlady 2000 remains one of the most compelling entries in Nissan's storied heritage.

SERVICE & REPAIR SCOPE

• J20 engine complete rebuild covering cylinder head decarbonizing with valve guide replacement, camshaft lobe profile and bearing journal measurement, timing chain and tensioner inspection, crankshaft regrinding to undersize specifications, connecting rod side clearance measurement, piston-to-bore clearance verification, and full oil pump overhaul
• Carburetor service for twin SU HS6 or Hitachi units including throttle shaft bushing replacement, jet recalibration, accelerator pump diaphragm inspection (Hitachi), float adjustment, and twin-carb balance procedures
• Ignition system maintenance covering distributor cap and rotor inspection, contact point gap and dwell angle setting, centrifugal advance spring tension verification, vacuum advance diaphragm leak check, coil output testing, and complete ignition timing procedure
• Clutch hydraulic system service where applicable, single-plate clutch inspection, pressure plate warpage check, flywheel resurfacing to specified limits, pilot bearing replacement, and clutch fork pivot inspection
• Four-speed manual transmission overhaul with gear tooth inspection, synchronizer ring thickness versus spec, shift drum inspection, bearing clearance measurement, and specified lubricant type and capacity
• Driveshaft balance check, differential ring and pinion setup with pinion depth shim selection, backlash measurement, carrier bearing preload adjustment, and side seal replacement
• Front suspension complete service with upper and lower ball joint load and drag torque testing, control arm bushing pressing, coil spring free length and rate verification, shock absorber gas-charge pressure check, and anti-roll bar bushing replacement
• Rear leaf spring service with arch height measurement, center bolt tension check, shackle pin replacement, and pinion angle alignment for vibration elimination
• Front disc brake service including pad replacement, caliper piston seal replacement and bore hone, rotor thickness and lateral runout measurement, and proportioning valve function test
• Rear drum brake overhaul with new shoes, wheel cylinder rebuild with fresh seals, brake pipe inspection, and complete system bleeds
• Wiring harness diagnosis with complete circuit diagrams for all market versions, charging system troubleshooting between generator and alternator variants, and accessory circuit repair
• Steering gear overhaul including worm gear and roller inspection, lash adjustment, sector shaft seal replacement, and alignment settings for camber, caster, and toe-in
• Cooling system diagnostics including radiator cap pressure testing, thermostat opening specification, water pump seal leak detection, and heater core flushing procedure
• Exhaust system inspection for manifold cracking, gasket condition, and complete routing with heat shield positioning
• Soft-top replacement, interior door panel removal, gauge cluster repair, and body panel alignment for proper door and trunk fitment

TECHNICAL SPECIFICATIONS

• Engine: Nissan J20 SOHC inline-four, 85.0 mm bore x 88.0 mm stroke, 1,999 cc
• Compression ratio: 9.0:1 to 10.5:1 depending on market and specification
• Maximum power: 105-145 hp (varies by market, year, and carburetor configuration)
• Induction: Twin SU HS6 or Hitachi carburetors
• Transmission: 4-speed fully synchronized manual, floor shift
• Clutch: Single dry plate, hydraulic actuation
• Frame: Separate ladder type
• Front suspension: Independent, unequal-length A-arms, coil springs, anti-roll bar
• Rear suspension: Live axle, semi-elliptic leaf springs
• Brakes: Front disc / rear drum
• Steering: Recirculating ball
• Wheelbase: 2,220 mm

DIAGNOSTIC INFORMATION

The diagnostic sections provide structured fault-finding procedures for every major system. Engine troubleshooting covers low compression investigation (distinguishing ring, valve, and head gasket causes), oil pressure warnings (pressure relief valve versus bearing wear), valve train noise identification, and carburetor imbalance diagnosis. The electrical troubleshooting flowchart addresses no-charge conditions, parasitic draw location, intermittent ignition failures, and instrument backlighting repair. Transmission diagnosis includes procedures for differentiating synchro failure from bearing noise, diagnosing shift linkage binding, and detecting oil seal leaks at input and output shafts.

ILLUSTRATIONS & DIAGRAMS INCLUDED

Complete set of factory-quality illustrations including J20 engine cut-away views showing oil flow paths, cylinder head combustion chamber section, full carburetor exploded diagrams, wiring schematics for all market variants with pin-out identification, suspension geometry diagrams with pivot point locations, brake system hydraulic circuit layouts, differential bearing preload assembly sequence illustrations, steering gear adjustment diagrams, and body trim identification charts. All fastener torque values and wear limits are clearly tabulated throughout.

COMPATIBILITY

Covers Nissan Datsun Fairlady 2000 models across the 1965-2000 model range under SR311 (RHD) and SRL311 (LHD) chassis designations. Includes all market variants, engine tune specifications, and mid-production running changes. Applicable to both the standard roadster and any special edition or competition-oriented variants produced during this period.

FILE PROPERTIES

Searchable PDF format viewable on any device running Windows, MacOS, or Linux operating system. Pages can be zoomed for fine detail reading and fully printable in whole or by section. English language. Instant digital download - no shipping costs or delays, access your manual anywhere and anytime from any connected device.