Installing a Nitrous System on a Mustang SVO Part 2

Copyright 1999 Jim Downing

For all of you "SVOers who are anxiously awaiting part two of my report on installing a nitrous system in a Mustang SVO, here it is! There are a few things that I feel must be mentioned before we start:

• It is highly recommended that the nitrous tank is placed in the hatch area of the car.
• The bottle top should face forward, to the front of the vehicle. This keeps the pickup tube submersed in liquid nitrous during hard acceleration. Inertia from a hard take off causes the nitrous to flow to the back of the bottle.
• Since the SVO is a hatchback, I would highly recommend using a blow down tube in place of the stock pressure relief cap. This is in the event of increased pressure levels (usually due to high bottle temperatures in the summer or just being in the sunny hatch area of a car). This tube should be routed to the outside of the car.
• Try to keep the factory cover for the hatch area to protect and hide your bottle.
• I think the stock fuel pump is inadequate for nitrous use. There are a number of aftermarket pumps available.

The installation should proceed as follows:

1. Assemble the various components of the kit as the directions instruct you to do. I would then locate the spot you would like most to place the bottle. The bottle should be secured. I am a firm believer that a person could get hurt if the bottle is not secured. In the event of a pressure relief, the bottle could roll and tumble around in the passenger compartment. This is a big concern with SVOs since they are all hatchbacks.
2. During the fogger installation, I have found that the best place to insert the fogger is at the front of the throttle body in the horizontal position right next to the intercooler hose. It is important to remove the throttle body since a hole will have to be drilled for the fogger nozzle. (I would hate for anyone to get aluminum in their engine). Also it is much easier to do it with the throttle body removed; then the nozzle must be placed so the spray pattern will be directed into the intake manifold.
3. I would then skip a few installation steps in the instruction book and go directly to the solenoids and mount them. I put the solenoids on the front upper to lower intake bolt. It has a threaded top and a nut on it. You need to make sure that the solenoids are not out of reach of the fuel supply line or the nozzle. The supplied hoses are only so long. The kit can be "special" ordered to include longer hoses for those who like the idea of hiding everything; i.e. like a cheater system.
4. Next go to the fuel rail and use an 8mm wrench to remove the schrader valve which is located above the number 3 injector. It looks like a tire valve. Then install the new fitting that is supplied with the kit. I always use thread paste instead of tape (this keeps the lines from clogging from pieces of tape that have fallen off).
5. After the previous step is finished, you should hook up the fuel supply line to the nozzle. Before you put on the nozzle end of the hose, install the appropriate jet supplied with the kit. Again, use thread paste on all connections. The next thing to do is to run the nitrous supply line from the back of the car to the nitrous solenoid. Then run the nitrous solenoid to the nozzle line, remembering to install the jet that is supplied.
6. The last thing to do is to follow the instructions in wiring up the solenoids, power relay, micro switch, arming switch, and then the all important in line fuse. After this, it is ready to test. I have found that the micro switch can be placed on the lower mounting bolt of the throttle cable bracket on the upper intake manifold. However, you may place it where you choose.

   The car might not start at first because the fuel lines need to be bled to remove the now trapped air in the line. This may not happen to your car--it might just start right up. (This happens to some but not all). It is nothing to worry about. However, another thing that I feel needs mentioning, and that is if your clutch is a little weak, it will be weaker with nitrous. The more power you add, the easier the clutch will slip.

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