bottle pressure is determined solely by bottle temperature, not by
the amount of nitrous in the bottle. As the temperature increases,
the pressure increases, and this pressure change causes an
undesirable change in nitrous delivery when using a fixed nitrous
jet. We have addressed this problem with our patented (Pat.
6,938,841) nitrous nozzle which changes jet size with bottle
pressure, maintaining a relatively constant nitrous flow over the
typical range of nitrous bottle pressures encountered. This nozzle
is especially suited to snowmobile applications where nitrous bottle
pressures can be as low as 300 PSI but can rise to 900 PSI after the
sled is warm.
nitrous kits (NK)for carbed (-CARB)or
fuel injected (-FI) machines. We
have air box (AB) nozzles which spray a
fan pattern into an air box, or direct spray (DS)
nozzles with a conical spray pattern for filters or open throttle
bodies. Because our nitrous nozzles provide constant nitrous flow
even with changes in nitrous pressure, we sell our nitrous kits
based on nitrous flow rate (grams/second). Each one gram/sec of
nitrous supplies a 2.5 - 3 horsepower increase in a four-stroke
engine and 2.0 - 2.5 for a two-stroke. For instance, for a 10
gram/second nozzle, four-stroke horsepower increase will be about 25
- 30, two-stroke horsepower increase will be 20 - 25.
YOUR OWN KIT
how much horsepower you want and work backward using the horsepower
vs. nitrous delivery rate above. For instance, if a 40hp increase
is desired for a 4-stroke engine, divide the horsepower increase
(40) by 2.75 (2.5 - 3), giving a required total nitrous delivery to
the engine of about 14.5 grams/second.
the nozzle(s). We have air box (AB) nozzles with flows of 10, 12,
15, and 20 grams/second and direct spray (DS) nozzles with flows of
7.5, 10, 12, 15, and 20 grams/second. If it is a 2 cylinder engine
with filters, this would use two 7.5DS nozzles and the kit
number is NK2@7.5DS-CARB or NK2@7.5DS-FI2. If the machine has an
air box, you can use one 15AB nozzle, and the kit number is
NK1@15AB-CARB or NK1@15AB-FI2.
list show several kit examples but this by no means limits our
capabilities. Many of our nitrous kits are specials, and there
typically is little extra charge. We have model-specific kits for
Polaris Fusion and IQ and Yamaha Apex, RX-1, and the new Phazer.
Shown to the left is our new
patented (Pat. 7,082,933) combination nitrous and fuel solenoid.
Drawing only 15 watts, it provides efficient operation, and its
convenient mounting stud simplifies installation.