1991 ACURA NSX fuel type

Types and Materials of Exterior Resin Parts

NOTE: A standard symbol is stamped on the underside of each resin part to show the type of material used.
Example:

HONDA

>PP<


NO.

Part Name

Headlight lid
Front bumper
Front and rear skirts

Mirror

Side sill panel
Trunk ltd spoiler

Rear bumper

Fuel filler lid

Washer Tank
Replacement

see section 23

see page 20-58('93-'96) ,47('91-'92)
see pages 20-59 ('93-'96),48 ('91-'92),

61('93-'96),50('91-'92)

see page 20-20('93-96) ,19('91-'92)

see page 20-71

see page 20-66('93-'96),55('91-'92)
see page 20-60('93-'96),49('91-'92)
see page 20-68('93-'96),57('91-'92)
see page 20-59('93-'96),48('91-'92)

Material

PA6/PPE-M Polyamide/Polyphenylene ether

PBT-P Polybutylene terephthalate
PP Polypropylene

ABS Acrylonitrite butadiene styrene

PA6/PPE-M Polyamide/Polyphenylene ether
UP-G Polyster unsaturated thermoset

PBT-P Polybutylene terephthalate

PA6/PP-E Polyamide/Polyphenylene ether
PP PolypropyleneProCarManuals.com

Lubrication Points

For the details of lubrication points and types of lubricants to be applied, refer to the Illustrated Index and various workprocedures (such as Assembly/Reassembly, Replacement, Overhaul, Installation, etc.) contained in each section.

No.

LUBRICATION POINTS

LUBRICANT

Engine
Transmission

Manual

Automatic

Brake Line (including anti-lock brake system)
Clutch Line Shift lever pivots (M/T)Release fork (M/T)Steering gearbox (Manual)
Steering boots Steering column bushings
Steering ball jointsSelect lever (A/T)
Pedal linkage Intermediate shaft
Brake master power pushrod
Trunk hinges Door hinges upper and lower
Door opening detents
Fuel filler lid
Front hood hinges and latch
Clutch master cylinder pushrod
Tilt lever

Parking brake cable end
Throttle cable end Rear hatch latchRetractable headlight pin contact area
Shift cable end and select cable end
Caliper Piston seal, Dust seal, Caliper pin, Piston
Recommended Engine Oil
API Service Grade: SG Fuel Efficient Oil:
Identified by the words, "Energy Conserving II" API Service Grade: SG
SAE viscosity: 10 W—30 recommended
Fuel Efficient Oil:
Identified by the words, "Energy Conserving II"
SAE Viscosity: See chart below.
API Service Grade: SF or SG SAE Viscosity: See chart below.
Honda Premium Formula Automatic Transmission
Fluid or an equivalent DEXRON® II type automatic

transmission fluid

Brake fluid DOT3 or DOT4
Brake fluid DOT3 or DOT4
Silicone grease with molybdenum disulfide
Multi-purpose grease
Silicone grease Recommended Manual Transmission Oil
API Service Grade: SF or SG
transmission oil viscosity forambient temperature ranges
Engine oil viscosity for
ambient temperature rangesProCarManuals.com

Outline

Description

This engine is a 2,977 cm3 (181.6 cu-in) DOHC mid-ship unit having 6 cylinders of 90° —V configuration; it is water cool-

ed and equipped with a center plug type pent roof combustion chamber. It is specified for unleaded fuel and uses a

PGM-FI system: The PGM-FI system on this model is a sequential multiport fuel injection system.
PGM-FI system. This engine incorporates a new mechanism called Honda Variable Valve Timing and Valve Lift Elec-

tronic Control System (VTEC). This mechanism, the world's first, allows the timing and lift of the intake and exhaust

valves to be changed simultaneously. The engine also includes a new electronically-controlled intake manifold system

that can change the volume of the intake chamber.ProCarManuals.com

This engine has the following new features.

Type

Displacement
Bore x Stroke
Compression Ratio
Cam, Valve Mechanism
Valve Train
Fuel Supply System Water-cooled V6—90° Cross Flow
2,977 cm3(181.6cu-in)

90 x 78 mm
(3.54
x
3.07
in)
10.2
Dual Overhead Camshafts, VTEC Belt Driven
Sequential Multiport Fuel Injection (SFI)VTEC; High output and a broad power band is achieved through control of low-speed and high-speed valve operation
by the Engine Control Module (ECM).
(Two knock sensors are used to detect octane level of the fuel.)
Titanium connecting rods ; Accomodate high rotation speed and high output. Titanium material of light weight and
high strength is used for the connecting rods.
(Strength is at the same level as iron.)
(Weight is about 30% lighter than iron.)
New mechanism to the intake system; Increased low and middle speed torque and higher output can be achieved by
switching the chamber volume of the intake manifold according to engine speed. This is electronically-controlled.
Cooling system for the mid-ship engine:
Radiator located in front compartment (An aluminum alloy radiator and pipes made of aluminum alloy)
Engine room cooling fan
Expansion tank
The cylinder block is highly rigid with deep water jackets. In order to achieve lighter weight, magnesium is used for the following parts: Cylinder head coverIntake manifold cover
Intake manifold chamber
Major SpecificationsProCarManuals.com