| Negative
Supercharging Cooling System Specs
Negative Supercharging Cooling
System keeps the water temperature below 50°C
(122°F) with hot air induction by using a special
coolant flow restrictor and a unique combination
of conventional cooling system parts that may already
be fitted to the vehicle
 |
Negative Supercharging
Cooling System comprises of...
- Coolant Flow Restrictor
- 3 Row Cellular Tubular Radiator
- NON-Thermal Fan Clutch
- Clutch Fan
- Radiator Fan Shroud
- NON-Glycol Coolant Inhibitor ABOVE freezing
-or- Glycol Anti-Freeze Coolant BELOW freezing
only
- Tap or Distilled Water
How
Negative Supercharging Cooling System Works |
In 2003 we invested a great
deal of time and money to develop a low cost cooling
system for the Negative Supercharging Kits and Impulse
Crate Engines that keeps the engine cool with hot
air induction
Instead of keeping the specs of this new cooling
system a secret so you would need to buy it from
us, we have revealed the specs for FREE for the
following reasons.
- To show owners of Negative Supercharging Kits
and Impulse Crate Engines the correct cooling
system parts that must be used with Negative Pressure
Supercharging and hot air induction
- Most of the parts of this new cooling system
may already be fitted to the vehicle or can be
sourced from local speed shops and radiator specialists
- If the vehicle is fitted with most of the parts
of this new cooling system, it only requires using
our special coolant flow restrictor, the correct
coolant and removing the thermostat to reduce
the water temperature to 50°C (122°F)
Therefore, if you use this new cooling system
please acknowledge it as the Negative Supercharging
Cooling System -or- Impulse NPS Cooling System.
Negative Supercharging Cooling
System
1A) Impulse NPS Coolant Flow
Restrictor* -or-
1B) Impulse NPS Water Neck* |
- Circulates the water through the cooling
system at a low flow rate of 23 L/min (5
gpm) from idle to peak rpm to allow the
radiator more time to cool the water
- Impulse NPS coolant flow restrictor MUST
be inserted into the top radiator hose and
secured with the hose clamp supplied
- Supplied with the Negative Supercharging
Kits and Impulse Crate Engines
|
| 2) 3 Row Cellular Tubular Radiator |
- Single Flow (has NO baffle plates in tank)
- Louvered Fins
- Tubes Inline
- 1/2" - 5/8" Tubes
- 10mm Tube Pitch
- 16 - 18 FPI (Fins Per square Inch)
- Or use a Radiator with greater cooling
capacity
|
| 3) NON-Thermal Fan Clutch* |
- Fan is always engaged and increases in
speed from idle to a maximum of 1800 rpm
in proportion to engine speed regardless
of how much engine rpm increases
- Has NO temperature spring on front of
the clutch housing
|
| 4) Clutch Fan |
- Use 18-22" 6-7 blade Clutch Fan with NON-Thermal
Fan Clutch (recommended) -or-
- Use 18-22" 6-7 blade Mechanical Fan that
bolts directly onto the water pump
|
| 5) Radiator Fan Shroud |
- DO NOT leave out the fan shroud, it reduces
the water temperature by 15-20°C (25-35°F)
- Must fit the radiator and clear the fan
|
| 6A) NON-Glycol Coolant Inhibitor (Use ABOVE
freezing only) -or- |
- Use Penrite racing coolant inhibitor only
(contains NO Glycol) with outside air temperatures
between -3 ~ 60°C (27 ~ 140°F)
- DO NOT use NON-Glycol coolant inhibitor
below -3°C (27°F)
|
| 6B) Glycol Anti-Freeze Coolant (Use BELOW
freezing only) |
- Use ethylene Glycol anti-freeze coolant
only with outside air temperatures between
-31 ~ 8°C (-24 ~ 46°F)
- DO NOT use Glycol anti-freeze coolant
above 8°C (46°F)
|
| 7) Water |
- Use tap or distilled water only
|
* Parts available from Impulse Engine Technology
ONLY
Optional parts that improve
the Negative Supercharging Cooling System
| Water Pump with spiral impeller |
- Reduces the water temperature a further
10-15°C (18-27°F)
- MUST be used with Glycol anti-freeze coolant
or if outside air temperature exceeds 28°C
(83°F)
|
| Tefba Coolant Filter* |
- Allows radiator to operate at maximum
cooling efficiency by preventing rust scales
and dirt in cooling system from blocking
the tubes of radiator. NOTE: Use ONLY the
Tefba coolant filter
|
| Radiator Overflow Tank |
- Prevents air from entering the radiator
as engine cools and reducing the efficiency
of the cooling system
|
DO NOT use the following
PARTS with the Negative Supercharging Cooling System
 |
Radiators with 2 rows |
|
Radiators with double flow (has baffle plates
in tank) |
|
Radiators with triple flow (has baffle plates
in tank) |
|
Radiators with solid fins |
|
Radiators with tubes offset or staggered |
|
Radiators with tubes smaller than 1/2" |
|
Radiators with more or less than 10mm tube
pitch |
|
Radiators with less than 16 FPI (Fins Per
sq Inch) |
|
Thermostat (MUST be removed from engine) |
|
Thermal fan clutch (has a temperature spring
on front of clutch housing) |
|
4 Blade Fans |
|
Flex Fans |
|
Electric Fans |
|
Electric Water Pumps |
|
High flow water pumps |
|
Smaller diameter water pump pulleys than standard |
|
Aluminium water restrictor plates |
DO NOT use the following
COOLANT with the Negative Supercharging Cooling
System
|
NON-Glycol coolant inhibitor BELOW freezing
only |
|
Ethylene Glycol anti-freeze coolant ABOVE
freezing only |
|
Propylene Glycol anti-freeze coolant |
|
ANY chemical liquid that replaces water as
a coolant |
|
ANY type of coolant additive that claims to
reduce water temperature or prevent overheating |
| Impulse Engine Technology
P/L |
PO Box 986 Randwick NSW 2031 Australia
Ph: (02) 9398 5544
Fax: (02) 9398 5644
International: Ph: +(612) 9398 5544
Fax: +(612) 9398 5644
Email Us
Inventor of Negative Pressure Supercharging
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