Edelbrock 70403 Installation Manual Download Page 11

Page 11 of 22

Catalog #70403
Brochure No. 63-0147

©2003 Edelbrock Corporation

Rev. 1/03

2.5

Nitrous Feed Line Mounting

1.

Determine the route your main nitrous feed line will follow. Ensure the path does not route the nitrous feed
line too close to the exhaust system, suspension, electrical lines/components or  tires.

2.

Attach nitrous supply line to bottle.

3.

Feed nitrous line along proposed route.

4.

Secure nitrous supply line to underside of vehicle.

Note:

Stainless steel covering of the main nitrous feed line is very abrasive. Shield painted components or

sensitive system components like electrical, fuel lines, brake lines or suspension components to prevent
them from contacting main feed line. Rubber hose can be slid over and retained as a chafe guard.

5.

Leave nitrous line loose pending installation of nitrous solenoid.

2.6

Solenoid Mounting

Use the following procedures to install the Performer nitrous solenoids:

Note:

Remember to 

use Teflon paste only

on pipe threads.

 Do not use Teflon tape.

Hint:

Placement of the solenoid is often limited by the lack of possible mounting locations in the engine
compartment. However, if possible, observe the following suggestions:

Solenoid Safety Information

1.

Keep solenoid and lines away from exhaust components.

2.

Trial fit the solenoids with all lines attached to ensure a proper fit.

3.

Solenoids may be mounted sideways or upside-down, if necessary.

2.6.1 

Preparing To Mount Your Solenoids

1.

Locate the EFI solenoid bracket, solenoid “tee”, and solenoid mounting screws.

2.

This solenoid bracket can be modified (bent, twisted and/or cut) to allow for easier installation in areas
with minimal clearance . Please look at the photo on the next page of a typical solenoid mounting
location, and adapt your bracket according to the needs of your particular application.

2.6.2 

Nitrous Solenoids Mounting

1. Hold one of the nitrous solenoids securely (like in a bench vise) being careful not to harm the

solenoid or block the inlet or outlet of the solenoid.

2. Install nitrous filter fitting (Blue fitting 4AN X 1/8 NPT) using liquid Teflon, in the inlet port of the

nitrous solenoid.

3. Install one of the 1/8 NPT male sides of solenoid “tee”, using liquid Teflon, on the outlet port of the

nitrous solenoid. The female port of solenoid “tee” should be facing outward.

4. Install the remaining 1/8 NPT male end of the solenoid “tee”, using liquid Teflon, into the inlet port of

the second nitrous solenoid. Rotate second solenoid so that it parallels the first.

5. Install the 3AN x 1/8 NPT (blue straight fitting) into the outlet port of second nitrous solenoid.
6. Install one end of the 1/8 NPT male x 1/8 NPT male nipple fitting, using liquid Teflon, into nitrous

pressure regulator inlet port.

7. Loosely thread nitrous pressure regulator/nipple assembly into 1/8 NPT female port on solenoid “tee”.
8. Using liquid Teflon, install 1/8 NPT x 3/16” barb fitting into nitrous pressure regulator.

i.

Remove nitrous solenoid/regulator assembly from vise.

ii.

Attach EFI solenoid bracket to the bottom of the solenoids.

ii.

Verify the desired mounting location for the solenoid/regulator assembly.

9. Install solenoid/regulator assembly in desired location.
10. Tighten nitrous regulator until barb fitting points towards the vehicle’s fuel pressure regulator.
11. Leave all wiring loose for electrical systems installation.
12. Connect main nitrous feed line to inlet fitting (4AN x 1/8 NPT nitrous filter fitting) of the first nitrous

solenoid.

Summary of Contents for 70403

Page 1: ...ng Instructions 9 2 3 Nitrous Bottle Orientation 9 2 4 Nitrous Bottle Installation 10 2 5 Nitrous Feed Line Mounting 11 2 6 Solenoid Mounting 11 2 7 Nitrous Spray Nozzle Installation 12 2 8 EFI Vacuum...

Page 2: ...by such use Edelbrock Corporation assumes no responsibility for damages incurred by the use of products manufactured or sold by Edelbrock Corporation on vehicles used for competition or racing Edelbro...

Page 3: ...rewdrivers Pliers Bench vise Wire crimping pliers wire strippers Floor jack Vehicle jackstands Safety glasses Power Tools Power drill Drill bits 1 4 1 2 and 3 8 You should understand the following ski...

Page 4: ...e nasal passages Nytrous Plus was specifically created for automotive applications and is available for sale to the public at many speed shops across the USA Safety Steps For Working With Nitrous Oxid...

Page 5: ...installation on vehicles with upgraded or modified equipment The solenoid and microswitch brackets are designed to be manipulated bent cut twisted etc and the electrical components have properly size...

Page 6: ...l Quality Because Nitrous Oxide is an oxidizer fuel selection is critical Both octane and fuel consistency affect fuel burn rate The oxidizer quality of nitrous oxide will accelerate the burn rate so...

Page 7: ...lter 4AN x 1 8 NPT straight fitting blue 1 3AN x 1 8 NPT straight fitting blue 1 Swivel adapter 1 8 NPT female x 4AN female 1 12 3AN Line Blue 1 1 8 NPT pipe nipple 1 3 ft Vacuum hose 1 50 psi Nitrous...

Page 8: ...Device or PRD It is a safety valve designed to vent the contents of the bottle into the atmosphere in case of a catastrophic event like a collision It is also installed to prevent the over pressurizat...

Page 9: ...es are assembled so that the bottom of the siphon tube is at the bottom of the bottle opposite the bottle label An Edelbrock nitrous bottle cannot be mounted upside down Edelbrock does not offer a non...

Page 10: ...y practices involved in working on a vehicle from under the vehicle and verify that there are no fuel lines fuel tank s brake lines emissions equipment or structural members in the way of potential mo...

Page 11: ...with minimal clearance Please look at the photo on the next page of a typical solenoid mounting location and adapt your bracket according to the needs of your particular application 2 6 2 Nitrous Sole...

Page 12: ...Modifications performed to a solenoid bracket depend on many factors When mounting the solenoid regulator assembly on the vehicle considerations should be taken regarding any potential interference w...

Page 13: ...on the EFI Vacuum Tee Cut vacuum line and install 2 9 Fuel Pressure Safety Switch Installation 1 Locate fuel rail test port fitting 2 Make sure the vehicle s engine is cool release pressure in fuel s...

Page 14: ...Stud Nylon insulated 187 15 2 ea 18 22g female spade connector Nylon insulated 16 1 ea 15 amp ATO blade fuse 3 1 Nitrous Electrical Kit Contents 3 0 Electrical System Installation Important The wirin...

Page 15: ...ID FUEL PRESSURE SAFETY SWITCH WARNING DO NOT CONNECT TO THIS TERMINAL MICROSWITCH RED WHITE BLACK BLUE RED SUPPLY 12v ON ACC GROUND 12 16 11 7 8 11 13 14 9 10 13 2 3 4 1 13 15 13 5 6 2 2 2 2 2002 Ede...

Page 16: ...es 8 feet of color coded wires to make the electrical system installation for your Edelbrock Nitrous System as easy as possible We recommend that you do not cut any lengths of wires from the wire harn...

Page 17: ...uded with the switch for applications that require special spacing during installation 3 7 Microswitch Installation and Wiring The function of your microswitch is to enable your nitrous system It shou...

Page 18: ...he needs of your particular application The microswitch bracket is drilled to allow many different switch mounting positions This flexibility allows the microswitch to be positioned in such a manner t...

Page 19: ...he installation of you Edelbrock Nitrous System 6 0 Solenoid Inspection and Maintenance 1 Close valve on nitrous bottle 2 Make sure all nitrous supply lines are free of pressure before removal of any...

Page 20: ...itrous bottle valve not fully opened a Check bottle valve b Open valve fully 2 Nitrous bottle mounted improperly a Mount bottle properly Refer to Nitrous Bottle Mounting section 3 Plugged nitrous filt...

Page 21: ...ce temperature d Check bottle valve 1 Open valve fully e Check bottle orientation Refer to Bottle Mounting Orientation section 1 Mount bottle properly 7 Incorrect nitrous jetting a Compare jetting to...

Page 22: ...jet b Check bottle temperature and pressure 1 Ensure before every nitrous usage that you only use nitrous when the temperature and pressure of your bottle are correct Symptom 5 Vehicle surges under ac...

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