Unorthodox Racing
Pulley Sets
Ultra SS |
|
Unorthodox Racing - Pulley Sets
Standard Belt Layout - Underdrive Series (Ultra SS)
Application: Infiniti
- Lightweight 6061-T6 Billet Aluminum
- CNC Machined to .001"
- Real HP & torque gains across entire RPM range
- Over 7 years of use in "real world" applications
from street to road course to rally to dragstrip
- Better then OEM belt fitment & alignment
- The broadest range of applications available
- Polished Aluminum (call if you need in Black, Red
or Blue)
These pulley sets on average can provide gains
of 8 to 15 HP and 6 to 10 lbs-ft on normally aspirated engines
and 10 to 18 HP and 10 to 20 lbs-ft on forced induction engines.
Higher gains can be realized on vehicles that are modified.
Our Underdrive Series of Pulley Sets provide power
gains through weight loss and through the underdriving of all the
accessories (which accounts for about 15% additional gain).
However, we do not push underdriving for two main reasons. First, it
is important to keep charging systems, air conditioning, power
steering, and water pumps moving fast enough for every day driving.
Second, not much horsepower is gained from extreme underdriving.
In most applications all of our underdriving is done with the crank
pulley, not the accessory pulleys. This is done so maximum weight loss
can be achieved at the crank where most of the horsepower gains are
found.
Understanding the 9 digit Part # A B C
D E F G H I
A Series (0 = Underdrive, 1 = 12V Charger)
B Product (4 = Pulley Kit)
C D Vehicle Make
E Internal Use (0 = Assembly, 1 = Non-Assembly, 3 =
Alternator, 4 = Power Steering, 5 = Water Pump, 7 = Idler)
F G Vehicle Model
H Diameter (0 = Underdrive, 1 = Stock Diameter, 2 =
Overdrive)
I Color (Polished) |
