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S2000 > ENPP > ScienceofSpeed Valve Springs, Retainers & Bases
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CTSC "high
boost" pulley |
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ScienceofSpeed Drive Pulley - Comptech Novi 1000 Supercharger |
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ScienceofSpeed manufactures "high boost" pulleys for the Comptech Novi
1000 Supercharger kit for the S2000. These billet aluminum machined
pulleys are smaller than the standard Comptech design causing the
supercharger to spin faster increase boost and power levels.
Proper belt engagement is crucial as a slipping belt will cause the
supercharger to not spin reducing power. In several years of installing
these supercharger systems on the S2000, we have found what design and
materials work best. Compared to other pulleys available - these pulleys
fit right on the shaft of the supercharger (no grinding or sanding required), feature a belt
guide that prevents belt movement, and feature a durable yet high
traction plating that reduces belt slip.
We manufacture these pulleys in 3.6 - 3.0" in 0.2" increments
and usually have every size in stock. |
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It is important to note that the accepted
industry practice to measure pulley diameter is at the top of the pulley
teeth. Our pulleys are measured and listed by this standard. Other
manufactures, including Comptech, do not advertise pulleys by this
standard.
ScienceofSpeed pulleys have extra flat "teeth" that aid measuring
diameter. ScienceofSpeed pulleys are engraved with diameter sizes
& part numbers to prevent confusion. |
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pulley size |
part |
approximate boost |
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4.4" |
Comptech supplied
size for 2.0L |
6 psi (2.0L) |
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4.2" |
Comptech supplied size for 2.2L |
6 psi (2.2L) |
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3.6" |
ScienceofSpeed
enpp-1091.360 |
9 psi (2.0L), 8 psi
(2.2L) |
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3.4" |
ScienceofSpeed
enpp-1091.340 |
10 psi (2.0L), 9 psi
(2.2L) |
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3.2" |
ScienceofSpeed
enpp-1091.320 |
11 psi (2.0L), 10
psi (2.2L) |
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3.0" |
ScienceofSpeed
enpp-1091.300 |
12 psi (2.0L), 11
psi (2.2L) |
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As a very general rule of thumb, with all things being equal our testing
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each increase of 0.2" of pulley size
results in a pressure increase of 1 - 1.5 PSI
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each increase of 1000 RPM results in a
pressure increase of 1 PSI
- Each 1 point of compression loss
results in 1 PSI of pressure loss
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However,
this again varies by a number of factors including compressor
efficiency and should only be used as a general guide. |
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Please note that supporting fuel system
(fuel & ignition controller / stand alone engine management, injectors,
regulator, & fuel pump) are required.
For recommended upgrade stages,
please see this page.
The aftercooler option from Comptech is recommended for use with any higher
boost pulleys. |
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Shorter drive belts are required with these smaller pulleys. We will
provide the correct pulley if you order them from ScienceofSpeed. |
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specs |
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fitment: |
S2000, all yrs |
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dyno
testing |
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370.8 whp
hp / tq: |
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boost map:
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