Jackson Racing Liquid InterCooling System
If you need any replacement parts, I can recommand:
Brad Schaffner of Georges Imports Ltd
(SAAB main dealer + technical) Specialist.
8011 State Line Road
Kansas City MO 64114
TEL: +1 816 333 6582
FAX: +1 816 361 2096
Email: Brad Schaffner
There set-up costs around $450.00, compared to JR's $579.95... hehehehe
Pump & Parts
JR uses a .05 mm water injection jet.
The water injection hole has a very fine (and unique) size and pitch... 8mm x .75 to be exact. I ended up
finding the tap at Wholesale Tool. They had to order it, and took a week. Also purchased the 7 mm drill for
the hole.
Links
Aquamist - main web site.
Tips & Info...
Water Tank
- Generally about 5% to 10% capacity of the fuel tank, it will last approximately
between every fuel filling.
- Most existing installations use the original windscreen washer tank.
- The lowest water level inside the tank, should be higher than the water pump, especially if the
horizontal distance is under 3.5 metres (11.5 feet)
- Over 3.5 metres You need a priming pump, any windscreen washer type will do it, needs to be
activated under boost.
- Inline stainless water filter should be below the water tank, preferably immediately below the water level. If the filter is
positioned above the water level, you might experience interrupted water delivery due to trapped
air within the filter. Make sure that you can access it easily. Back flushing is best, make sure
that the trapped debris does not re-enter the system.
Water Pump -
- Best place for the water pump? In a dry area of the engine bay, the pump should be away from heat
and vibration, and not more than 0.5 metre above the lowest water supply level. It is important
that it is not more than a metre away from the battery. Noise is also important, avoid fitting
it near the bulkhead and large flat panel.
- If the pump is over two metres away from the battery? Increase the gauge of the wire (standard
loom is 16 AWG). We can supply heavier gauge cable loom for that purpose, state the length.
- No fitting the pump in an enclosed area? Semi-enclosed area must have ducted air-flow,
to assist cooling, and bolt the pump body to the chassis properly to help transfer the heat
produced by the pump.
- Horizontal mounting of the pump is best, but for road cars, it can be fitted
in any which way you like.
Water Jet Locations Some Sizes -
- How do I stop the water being siphoned into the inlet manifold during idle as I have to install
the jet after the throttle body? You need to install an inline checkvalve (806-249), it has a
crack pressure of 1 bar, so the vacuum can not overcome the valve.
- Is it possible for the water to siphon into the engine during the non-running period? Under normal
conditions, the inline pump act as a stop valve, only under pressures over 2 psi will the water
pass through the pump. This condition is unlikely unless your water tank is 10 feet above the
water jet.
Pressure Switch -
- Use a pressure switch to switch on a dash LED. A dash board LED can be connected in
parallel to the switch to indicate the switch point, no inline resistor is necessary: Please note
that it doesn't mean that water is being injected.
- Best position to fit a pressure switch? Along the inlet tract or manifold, but well away from heat
and vibration. The setting of the pressure switch can be affected by heat. We have now included
the remote mounting kit for systems purchased after March 2000.
Jet Sizes -
- 806 301 - Nickel plated brass water jet 0.4mm 4mm hosetail. - $9.00
- 806 302 - Nickel plated brass water jet 0.5mm 4mm hosetail - $9.00
- 806 309 - Nickel plated brass water jet 0.6mm 4mm hosetail - $9.00
0.4(yellow) | 0.5(green) | 0.6(blue) | 0.7(red) | 0.8(bk/wt) | 0.9(white) | 1.0(black)
Aquamist Safeguards -
- If the water tank is empty? You have got approximately three minutes before permanent damage occurs.
Please note that this rarely happens as three minute is an awfully long time to pin your foot
down on a normal road. Track racers have to take great care not to allow this to happen.
- Prevent this from happening by treating water injection as part of your standard OE equipment,
check the water level regularly, fitting a water pressure gauge is the first step. Monitoring
the water pressure has other advantages such as early warning of a blocked jet, if the water
pressure progressively increased for no reason, it is a sign of the beginning of a blockage.
- I would like to fit a better looking gauge rather than your 'purely' functional type, will oil
gauge do it? Yes, most 10-bar+ oil pressure gauges are constructed with brass fittings and are
suitable for water applications. Please note that an inline restrictor must be used to
prevent the gauge from damage by the high pressure pulses by the piston-action pump. We can
supply most fittings to match the thread fitting of common oil gauges, contact
us with the thread fitting details, do not guess.
- Early warning system rather than a gauge, any suggestion? We supply an external-fit float switch,
it is very easy to fit, available with LED warning lamp as an option.
- Is that an active or automatic way of stopping the water pump running dry? Yes, there are a
number of ways you can do it:
- a) Wire-up the float switch to disable the pump when the water level is low. Don't forget to put a
dash warning lamp as well.
- b) A dash-board normally open switch can be used to manually switch off the pump when the tank is
empty, works well with a water pressure gauge. The switch should only disable the power relay
coil rather interrupting the power fed to the pump (28A !).
- c) Teeing a 5-10 bar pressure switch onto the water delivery line, disable the pump in absence of
water pressure during activation period. This method needs a bit of under standing of
electronics. One drawback, it will not detect a blocked water jet.
Primming Pump Relay Diagrams
Circuit diagram shows how this can be done:
Pump LED
I would like to fit an indicator to tell me when the pump is activated...
This is a quite simple modification for system 1s:
- All you need to do is to connect a led in parallel to the pressure switch.
- For system 2s, connect the led across the solenoid valve.
- Green led is normally used for injection indication.
Please note that both leds are for visual indication only, it doesn't actually confirm that there is
water injecting into the engine.
Freezing
- To prevent the water from freezing in winter? Use a 20% Methanol/water mixture or use "windscreen
additives" that contains Methanol (wood alcohol) or Iso-propanol (rubbing alcohol), check
it before purchase. Methanol is better than other forms of alcohol and is totally compatible with
Aquamist products.
- Avoid using Ethanol based additives such as De-natured alcohol or Methylated spirit.
