Nitrous Express Honda NXL - Manual (Page 5)

summer.
CAUTION: NEVER USE AN OPEN FLAME
TO HEAT A NITROUS BOTTLE. THIS IS A
VERY DANGEROUS AND POTENTIALLY
FATAL PRACTICE!!!!!!!!!!!
12. A purge valve (PN15600-15601) is recommended
on all NX systems. When the weather begins to
get hot, a purge valve is worth up to a tenth of a
second on a 1⁄4 mile pass. Note: The correct purg-
ing procedure for drag racing is: 1. Complete the
burnout. 2. Light the pre-stage bulb. 3. Push
the purge button three times, one second each. 4.
Stage immediately, GO FAST.
13. If there is a question about the purity of your
nitrous supply, a filter (PN15610 or 15607) should
be used when refilling your bottle. Just attach the
filter to your bottle when you take it to be refilled.
Contaminated nitrous will cause serious damage
to the nitrous solenoids, and possibly to your
engine. This is a lifetime renewable filter.
14. If you have questions about the suitability of your
torque converter or gear ratios, call the factory
tech line for the “inside scoop”.
15. Your nitrous bottle should be turned off when not
in use (even between runs). An NX remote bottle
opener (PN 11107) will make this task much
easier.
16. Start with the lowest power setting in your system.
Don’t try to be the track “Hero” on your first pass.
Remember: start out small and work your way up:
NX systems produce more real horsepower than
any other brand on the market today.
17. If the solenoids must be disassembled for clean-
ing or rebuilding, always use the proper wrench
(PN 15921). Do not use any clamping device on
the solenoid tower; instant non-warranty damage
will result.
18. If you run an NX system of 150+ horsepower, you
must use a high octane racing type fuel. These
are some tips to help you choose and maintain the
correct fuel for your application:
A. The most important statistic you should look
for in the fuel specifications is the “MON”
or Motor Octane Number. In most cases, the
higher the number the more timing you can
run, and detonation will not be a problem.
B. Most V-8 or V-12 engines with stock com-
pression will run on “93” unleaded pump gas
with up to 150 horsepower boost; Most 4 or 6
cylinders with stock compression can use up
to 75 horsepower.
C. Racing engines with 10-1 compression or
higher must run racing fuel. The higher the
compression, and the higher the boost, the
higher the “MON” must be.
D. With nitrous usage usually the highest “MON”
available is the one that should be used.
E. All NX systems are calibrated to use fuel with
.730 specific gravity or “SG”. If you use a fuel
with a lower “SG” you must use a higher fuel
pressure to compensate for the lighter fuel. If
you use a fuel with a higher “SG”, a lower
fuel pressure will be required. Most unleaded
pump gas is .730 SG or above.
F. Racing fuel should be stored in an airtight,
dark container. Exposure to atmosphere
allows very important elements to evaporate,
lowering the octane of the fuel. Sunlight oxi-
dizes the lead contained in racing fuel, since
this is the most important ingredient used to
raise octane it must be protected.
G. Never leave the fuel in your car between
race days. This allows evaporation of the
very important “High end” hydrocarbons and
lowers the octane of the fuel.
H. Never buy racing fuel from and underground
or vented storage tank. Always demand to
see where and how the fuel is stored, a sealed
drum is the only correct way.
I. AV gas or aviation fuel is not compatible with
nitrous usage, don’t be tempted by the cheap
price, instant engine damage will result!
J. For a fuel recommendation contact your NX
dealer.
19. All vehicles, including full competition race
cars, must have an alternator to provide adequate
amperage required by today’s racing accessories.
Add up all the amps required by your car, you’ll be
surprised!
20. If you notice some of the N2O-fuel orifices are not
perfectly aligned in your NX plate system, do not
be concerned. This misalignment has been engi-
neered into the system to direct fuel to specific
cylinders.
21. If you have trouble with your NX system or any
related parts, call your dealer first. If you still
need help call the factory tech line 940-767-7694
9:00 AM - 4:00 PM Mon-Fri. We are the nitrous
experts and will give straight answers to your
questions.