Nos LT-1 Manuel utilisateur

P/N A5135-SNOS-1

LT-1

Kit Numbers: 05176NOS & 05176TBNOS

OWNER’S MANUAL

NOTICE: Installation of Nitrous Oxide Systems Inc. products signifies that you have read this document and have

agreed to the terms stated within.

It is the purchaser’s responsibility to follow all installation instruction guidelines and safety procedures supplied with the product

as it is received by the purchaser to determine the compatibility of the product with the vehicle or the device the purchaser

intends to install the product on.

Nitrous Oxide Systems Inc. assumes no responsibility for damages occurring from accident, misuse, abuse, improper

installation, improper operation, lack of reasonable care, or all previously stated reasons resulting from incompatibility with other

manufacturers’ products.

Nitrous Oxide Systems Inc. assumes no responsibility or liability for damages incurred by the use of products manufactured or

sold by Nitrous Oxide Systems Inc. on vehicles used for competition or racing.

Nitrous Oxide Systems Inc. neither recommends nor condones the use of products manufactured or sold by Nitrous Oxide

Systems Inc. on vehicles, which may be driven on public roads or highways, and assumes no responsibility for damages

incurred by such use.

NOS nitrous oxide is legal for use in most states when used in accordance with state and local traffic laws. NOS does not

recommend or condone the use of its products in illegal racing activities.

Kit Number 05176NOS, when equipped with the upgrade package P/N 15826NOS, has received an Executive Order

Exemption from the California Air Resources Board (EO #D-266). This exemption means than when equipped with this

upgrade package, your vehicle will be “Smog Legal” in all 50 states.

Kit Number 05176TBNOS has not yet been tested and therefore, has not received an Executive Order Exemption from

the California Air Resources Board.

NOTICE: The NOS Kit Number 05176NOS/05176TBNOS is not intended for use on hatchback type vehicles without the

use of NOS part numbers 16160NOS (External Aluminum Blow-Down Tube) and 16166NOS (Racer Safety

Pressure Relief Cap).

HAZARDS DEFINED

This manual presents step-by-step instructions that describe the process of installing your NOS Nitrous Oxide Injection System.

These procedures provide a framework for installation and operation of this kit. Parts are referenced by name and number to

avoid confusion. Within the instructions, you are advised of potential hazards, pitfalls, and problems to avoid. The following

examples explain the various hazard levels:

WARNING! Failure to comply with instructions may result in injury or death.

CAUTION! Failure to comply with instructions may result in damage to equipment.

NOTE: This information is important, needs to be emphasized, and is set apart from the rest of the text.

HINT: These special instructions provide a handy work tip.

NITROUS OXIDE INJECTION SYSTEM SAFETY TIPS

WARNINGS

Do not attempt to start the engine if the nitrous has been injected while the engine was not running. Disconnect the

coil wire and turn the engine over with the throttle wide open for several revolutions before attempting to start. Failure

to do so can result in extreme engine damage.

Never permit oil, grease, or any other readily combustible substances to come in contact with cylinders, valves,

solenoids, hoses, and fittings. Oil and certain gases (such as oxygen and nitrous oxide) may combine to produce a

highly flammable condition.

Never interchange nitrous and fuel solenoids. Failure to follow these simple instructions can result in extreme engine

damage and/or personal injury.

Never drop or violently strike the bottle. Doing so may result in an explosive bottle failure.

Never change pressure settings of the safety relief valve on the nitrous bottle valve. Increasing the safety relief valve

pressure settings may create an explosive bottle hazard.

Identify the gas content by the NOS label on the bottle before using. If the bottle is not identified to show the gas

contained, return the bottle to the supplier.

Do not deface or remove any markings that are on the nitrous bottle.

Nitrous bottle valves should always be closed whenever the system is not being used.

Notify the supplier of any condition, which might have permitted any foreign matter to enter the valve or bottle.

Always keep the valves closed on all empty bottles to prevent accidental contamination.

After storage, open the nitrous bottle valve for an instant to clear the opening of any possible dust or dirt.

It is important that all threads on the valves and solenoids are properly mated. Never force connections that do not fit

properly.

CONGRATULATIONS on purchasing your NOS Nitrous Oxide Injection System. Your system is composed of the highest

quality components available. It should provide many miles of trouble-free performance when used correctly. If you have any

questions regarding the performance of your system, call NOS Technical Service at 1-866-GOHOLLEY.

TABLE OF CONTENTS

What is Nitrous Oxide?…………………………………………………………………………………………………………...4

Do’s and Don’ts of Nitrous Oxide……………………………………………………………………………………………….4

Chapter 1 Introduction to Your NOS Nitrous Oxide Kit…………………………………………………………………….4

1.1 General Information………………………………………………………………………………………………. 4

1.2 System Requirements………………..……………….….……..……………………………….………………..5

1.3 Kit Components…………………………………………………………………………………………………….6

Chapter 2 Kit Installation………………………………………………………………………………………………………...7

2.1 Bottle Mounting Instructions…………………………………………………………………………………….7

2.1.1 Street Vehicles………………………………………………………………..………………………. 7

2.1.2 Racing Vehicles………………………………………………………………………………………. 7

2.2 Bottle Orientation…………………………………………………………………………………………………..8

2.3 Bottle Installation…………………………………………………………………………………………………..9

2.4 Spray Nozzle Installation Kit Number 05176NOS Only...………………………………………………….. 11

2.5 Solenoid and Regulator Mounting Kit Number 05176NOS only.………………………………………… 11

2.6 Solenoid and Regulator Mounting Kit Number 05176TBNOS only……………………………………… 12

2.7 Regulator and Fuel Pressure Connection………………………………………………………………….….13

2.8 Nitrous Feed Line Mounting…………………………………………………………..………………………… 13

2.9 Solenoid/Fan Spray Nozzle Hose Connection Kit Number 05176NOS only.………………………….. 13

2.10 Solenoid/Throttle Body Nitrous Line Connection Kit Number 05176TBNOS only………………….. 13

2.10.1 Fuel Pump Installation………………………………………………..…………………………….14

2.11 Electrical System Installation…………………………………………..………………………………………15

2.11.1 Electrical Installation—N2O System…………………………………………………………..….15

2.11.2 Electrical Installation—Fuel Pump………………………………………………………………. 17

2.12 Preparing for Operation………………………………………………………………………………………… 17

Chapter 3 Tuning…………………………...……………………………………………………………………………………..18

Appendix A Troubleshooting Guide…………………………………………………………………………………………...19

Nitrous Oxide Accessories……………………………………………………………………………………………………… 20

LIST OF FIGURES AND TABLES

Figure 1 Kit Numbers 05176NOS/05176TBNOS Components....…………….…..…………..………….………………. 6

Figure 2 Nitrous Bottle Siphon Tube Orientation…………………………………………………………………………...7

Figure 3 Nitrous Bottle Mounting Orientation………………………………………………………………………………..8

Figure 4 Kit Numbers 05176NOS/05176TBNOS Assembly Drawing……….………..……………….….……………… 10

Figure 5 Solenoid and Regulator Mounting—Kit Number 05176TBNOS only……………..…………………………..12

Figure 6 Solenoid/NOS Throttle Body Nitrous Line Connection………………………………………….………….…..13

Figure 7 Fuel Pump Location………………………………………………………………………….……………………..…14

Figure 8 Wiring Schematic—Nitrous System..…………………..…………………………………………………………..15

Figure 9 Microswitch Mounting Location………………………………………….……………………………………..… 16

Figure 10 Microswitch Installation…………………………………………………………………………………………..…16

Figure 11 Wiring Schematic—Fuel Pump….………………………………………………………………………………… 17

Table 1 Kit Numbers 05176NOS/05176TBNOS Parts List…….…………………...……………………………………….5

Table 2 Tuning Suggestions for NOS Kit Numbers 05176NOS/05176TBNOS…………..…..………………………… 18

WHAT IS NITROUS OXIDE?

NITROUS OXIDE…

…Is a cryogenic gas composed of nitrogen and oxygen molecules

…Is 36% oxygen by weight

…Is non-flammable by itself

…Is stored as a compressed liquid

…Exists in two grades—U.S.P. and Nitrous Plus:

U.S.P. is medical grade nitrous oxide; its common use is dental and veterinary anesthesia. It is also commonly used as a

propellant in canned whipped cream. U.S.P. is not available to the public.

Nitrous Plus differs from U.S.P, in that it contains trace amounts of sulphur dioxide added to prevent substance abuse.

Nitrous Plus is intended for automotive applications and is available for sale to the public

In automotive applications, Nitrous Plus and fuel are injected into the engine’s intake manifold, which produces the following

results:

Lowers engine intake air temperature, producing a dense inlet charge.

Increases the oxygen content of the inlet charge (air is only 22 percent oxygen by weight).

Increases the rate at which combustion occurs in the engine’s cylinders.

Do’s and Don’ts of Nitrous Oxide

Do’s

Read all instructions before attempting to install your NOS nitrous system.

Make sure your fuel delivery system is adequate for the nitrous jetting you have chosen. Inadequate fuel pressure or flow

will result in engine damage.

Use the recommended gauge of the wire when installing electrical system components.

Use high-quality connections at all electrical joints.

Use Teflon-based paste on pipe style fittings.

Make sure your engine and related components (ignition, carburetor, and driveline) are in proper working condition.

If nitrous is accidentally injected into the engine when it is not running, remove the engine coil wire, open the

throttle, and crank the engine 10 to 15 seconds before starting. Failure to do so can result in an explosive engine

failure.

Use your NOS nitrous system at wide-open throttle only and at engine speeds above 2500 RPM.

Install a proper engine to chassis ground. Failure to do so may result in an explosive failure of the main nitrous

supply line.

Use a high-quality fuel, as suggested in Chapter 3, Tuning Suggestions.

Don’ts

Engage your nitrous system with the engine off. Severe engine damage can occur.

Modify NOS nitrous systems (if you need a non-stock item, call NOS Technical Service for assistance)

Overtighten AN type fittings.

Use Teflon Tape on any pipe threads. Pieces of Teflon tape can break loose and become lodged in nitrous or fuel

solenoids or solenoid filters. Debris lodged in a nitrous or fuel solenoid can cause catastrophic engine failure.

Use sealant of any kind on AN type fittings.

Inhale nitrous oxide. Death due to suffocation can occur.

Allow nitrous oxide to come in contact with skin. Severe frostbite can occur.

Use octane boosters that contain methanol. Fuel solenoid failure may occur, producing severe engine damage.

Chapter 1 Introduction to your NOS Nitrous Oxide Kit

1.1 General Information

Kit Numbers 05176NOS/05176TBNOS is intended for use on 1992-1997 350 GM LT-1 engines. 125-150hp increases are

common with this kit. Torque increases of 160-200 lb./ft. over stock are common.

NOTE: Nitrous oxide injection systems that add fuel near the throttle body (“wet style”) are prone to poor mixture distribution

and fuel puddling in the intake manifold, thus frequently causing severe intake manifold backfires.

Kit Numbers 05176NOS/05176TBNOS flows fuel through the engine’s injectors (“dry style”). Necessary fuel flow is

accomplished by increasing the fuel pressure, thus increasing the fuel flow rate.

IMPORTANT: The stock LT-1 fuel system operates at 40-45 psi. Kit Number 05176NOS increases fuel pressure to 80-85 psi.

Always use a quality high-pressure fuel hose when installing this kit.

Driveability, fuel economy, and exhaust emissions should not be affected under normal (part-throttle) vehicle operation.

Typically, the standard 10 lb. bottle of nitrous will supply 45 sec-1 ½ minutes of operation at wide-open throttle. A full 10 lb.

bottle will weigh 25 pounds. For best performance, the bottle should be refilled when it weighs 15 to 18 pounds.

1.2 System Requirements

When used correctly, Kit Number 05176NOS/05176TBNOS will work with stock LT-1 internal engine components. To ensure

proper performance and driveline longevity, the following is suggested:

¾Manual Transmissions

If the vehicle is to be exposed to severe operating conditions, such as dragstrip use, the standard GM clutch should be

replaced with a high performance unit.

¾Automatic Transmissions

If the vehicle is to be exposed to severe operating conditions, such as dragstrip use, a reputable high performance

transmission shop should service the automatic transmission.

1.3 Kit Components

Before beginning the installation of your NOS kit, compare the components in your kit with those shown in Figure 1 and listed in

Table 1. If any components are missing, please contact NOS Technical Support at 1-866-GOHOLLEY.

Table 1 Kit Number 05176NOS/05176TBNOS Parts List

Item Description Quantity NOS P/N

(1) 10 lb. Nitrous Bottle 114745

(2) Bottle Valve Adapter (4AN) 116220

(3) Bottle Valve Washer 116210

(4) Bottle Bracket Set 114125

(5) Blow-Down Tube 116160

(6) Nitrous Spray Nozzle Adapter 113709-S

(7) Nitrous Spray Nozzle Adapter Nut 113713-S

(8) Fan Spray Nozzle (Blue) 113500

(9) Nitrous Solenoid 216020

(10) Nitrous Solenoid TEE 117242-S

(11) Solenoid Mounting Bracket 116509

(12) 4AN Nitrous Filter Fitting 115570

(13) 1/8” NPT Male x 1/8” NPT Male Nipple 117500

(14) Nitrous Pressure Regulator 115850

(15) 1/8” NPT x 3/16” Hose Barb 116244A-S

(16) 3AN Hose with 1/8” NPT Male Fitting 115060

(17) Vacuum Hose Pressure TEE 117538-S

(18) Vacuum Hose 115005-S

(19) Ratcheting Hose Clamps 516239-S

(20) Main N2O Feed Line 4AN 16 ft. 115300

(21) 4AN x 4AN 90° Fitting (for optional use) 117535

(22) #67 Flare Jet 113750-67-S

(23) Fuel Pump Bracket 115767-S

(24) Fuel Pump 115763-S

(25) Fuel Pump Sock 115765-S

(26) 1/2” Hose Barb X “GM” Fitting 115538-S

(27) 3’ x 1/2” I.D. Fuel Hose 115007-S

(28) Large Hose Clamp 416238-S

(29) 2’ x 3/8” I.D. Fuel Hose 115004-R

(30) Small Hose Clamp 416240-S

(31) Microswitch* 115640

(32) Arming (Toggle) Switch 115600

(33) 30 AMP Relay** 115618

(34) Scotch Lock Connector 115891-S

(35) Throttle Body 120360NOS

*Includes Bracket and Screws. **Includes Relay Harness. ***Wiring and Connectors also supplied.

NOTE: Kit Number 05176TBNOS will not use parts (6), (7), & (8).

NOTE: Kit Number 05176NOS does not contain part (35)

Figure 1 Kit Numbers 05176NOS & 05176TBNOS Components

Chapter 2 Kit Installation

2.1 Bottle Mounting Instructions

NOTE: Disconnect the battery ground before beginning installation.

2.1.1 Street Vehicles

Accurate calibration of your NOS nitrous system depends on the bottle remaining at a stable temperature. Mount the bottle

away from heat sources, such as the engine compartment or exhaust system, and away from windows, where the bottle is

exposed to direct sunlight. In vehicles such as Camaros and Firebirds, it is impractical to mount the bottle away from direct

sunlight. In these cases, the bottle should be covered or insulated, such as with an NOS bottle blanket (#14165).

NOS recommends that the bottle be environmentally separated from the driver’s compartment. Vehicles such as Camaros and

Firebirds do not have separate trunk compartments, so this kit includes an external blow-down tube. The safety blow-down tube

should be routed to the exterior of the vehicle (preferably under the vehicle). This procedure will prevent filling the driver’s

compartment with a cloud of nitrous oxide if the safety pressure relief cap should happen to rupture for any reason.

2.1.2 Racing Vehicles

Before mounting a nitrous bottle in a racing vehicle intended for use in sanctioned events, check with the sanctioning

association for any rules regarding this subject. Most associations require the bottle to be mounted within the confines of the

safety roll cage, with the safety pressure relief cap vented away from the driver’s compartment.

Figure 2 Nitrous Bottle Siphon Tube Orientation

Figure 3 Nitrous Bottle Mounting Orientations

2.2 Bottle Orientation

Bottle placement is critical to the performance of your NOS nitrous system. It is important to understand how the bottle valve

and siphon tube are assembled to properly orient the bottle in your vehicle and ensure that it picks up liquid nitrous while

undergoing acceleration. All NOS nitrous bottles are assembled so that the bottom of the siphon tube is at the bottom of the

bottle and opposite the bottle label (Figure 2).

Whenever the bottle is mounted in a lay-down position, the valve handle must be towards the front of the vehicle with the label

facing up (Figure 3A).

If the bottle is mounted vertically, the valve handle and label must face toward the front of the vehicle (Figure 3B). This

orientation will position the siphon tube at the back of the bottle where the liquid N2O will be during acceleration.

WARNING! DO NOT attempt to remove the siphon tube without completely emptying the bottle of all nitrous and

pressure.

A bottle mounted upside-down must have the siphon tube removed before use (Figure 3C). Non-siphon bottles can be specially

ordered from NOS.

If the bottle must be mounted parallel to the axles of the vehicle (sideways), the valve handle and label must be angled at

approximately 45° toward the front of the vehicle (Figure 3D). This orientation will position the siphon tube toward the rear of the

bottle.

NOTE: When using a bottle with a siphon tube, the tall bracket should be at the valve end of the bottle and the short bracket at

the bottom (Figure 3E).

The most efficient mounting is the lay-down position (Figure 3A) with the valve handle toward the front of the vehicle. This

position allows the greatest amount of liquid to be used before the siphon tube begins to pick up gaseous nitrous oxide.

2.3 Bottle Installation

After you have determined the location and orientation of the nitrous bottle, use the following procedure to install the bottle:

NOTE: Numbers in parentheses ( ) refer to the parts list /assembly drawing number for the component (Figure 1). Figure 4

shows the installation assembly for Kit Number 05176NOS.

1. Install the bottle nut adapter (2) and washer (3) on the nitrous bottle (1), and tighten securely.

2. Loosely install the bottle mounting brackets (4) and the vent tube (5) on the nitrous bottle.

3. Locate the bottle assembly in the desired mounting area, ensuring that the location will provide easy access to the bottle

valve, hose connection, and bracket clamp bolts to facilitate bottle changing.

4. Use the assembled bottle/bracket/blow-down tube unit as a pattern to mark and drill four 5/16” holes for the bottle bracket

bolts, a 1/2” hole for the blow-down tube, and a- 11/16” hole for the nitrous supply line.

5. Mount the brackets securely to the surface (recommended minimum of 5/16” bolts or No. 12 sheet metal screws).

6. Tighten the bracket clamps on the bottle.

Figure 4 Kit Numbers 05176NOS & 05176TBNOS Assembly Drawing

NOTE: Parts (6), (7), & (8) are not used when installing NOS Kit Number 05176TBNOS.

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