Suspension Lifts (1",2",3")

4WD Systems Suspension is an integrated combination of 35mm gas & 41mm Foam Cell Shock Absorbers, Multileaf Leaf, Springs, Coil Springs, Torsion Bars, Polyurethane Bushes and other components. Designed to dramatically improve on road comfort, handling and load carrying capacity, the Goannawhere Suspension also improves off-road performance by improving wheel travel, traction and ground clearance.

Whether you are driving on the highway or off the beaten track the fitment of a Goannawhere Suspension will provide a significant improvement over the factory original or worn out suspension system. It is common knowledge that a poor suspension gives spongey, pitching, unstable road handling, extended braking distances, limited load and towing capacity. Tyre wear can also be greatly increased.

Off road, limited wheel travel and poor ground clearance result in bump steer and reduced traction.

A Goannawhere Suspension will yield a level of comfort not previously considered possible, yet at the same time give a substantial increase in the vehicles load carrying/towing capacity as well as improved wheel travel for off-roading.

Shock Absorbers

Many 'factory' shocks have 30mm diameter pistons with relatively poor sealing around the piston head and a restricted length of travel. The volume of oil is limited, increases in temperature rapidly, losing viscosity, hence less damping effect. The poor seal allows 'bypass' - hot hydraulic oil under pressure leaks past the piston head that contains the valve stack.

The shock soon looses control of the spring - known as damper 'fade'.

Larger internal piston diameter and longer travel results in a substantial increase in the total hydraulic fluid oil capacity. Increased oil capacity results in greater heat dissipation, leading to higher retained viscosity which means greater effective damping action for longer - there is cooler, thicker oil porting through the valve stack in the piston head.

Additionally, multiple stage velocity sensitive valving improves response to varying road and track conditions. The valve stack is velocity sensitive. The velocity of shock absorber movement, two obvious greatly different events are - pot hole at 100km/hr vs slow undulation on highway at 100km/hr - is accommodated by different valving in the piston head. The greater the number of valves the smoother the transition from speed to speed, hence smoother more controlled ride.

4WD Systems has 2 shock absorbers in the range: a 35mm nitro-gas charged shock and a 41mm foam-cell shock - both with effective 'o'-ring seals around the piston head to minimise piston head by-pass.

All shocks have hydraulic oil to pass through the valve stack. The 'nitro-gas' and 'foam-cell' are 2 types of anti-foaming, anti-frothing or anti-aeration agents, thus keeping the hydraulic oil consistent - no bubbles. Bubbles and froth result in reduced damping and poor spring control as gas or air passes through the valves instead of the hydraulic oil.

The increased diameter and stroke of the 35mm shock over the original does provide a noticeable improvement. However the 35mm gas shock does not have the capacity to work as hard as the 41mm shock, so its application tends towards lighter vehicles and leaf sprung vehicles where the friction between the leaves assists in the damping of the spring.

For vehicles doing harder work, like carrying heavy loads over long outback roads, or for 'all coil' and IFS/IRS vehicles that have no damping force other than the shock itself, then the 41mm foam-cell shock comes into its own. This is because it has a significantly increased oil capacity, hence lower oil temperatures (greater viscosity) and improved anti-aeration characteristics over both the original and the 35mm gas charged shock.

Independent Suspension (IFS & IRS) vehicles have particularly short bodied shocks with minimal oil capacity so they improve significantly when larger capacity shocks are fitted.

The 'foam-cell' (or sheath) takes up the space of gas or air in other shocks. It is comprised of a multitude of minute sealed gas chambers that cannot mix with the hydraulic oil unlike the gas in nitro-gas shocks or air in original shocks.

Aeration is also due to the hydraulic oil boiling or bubbling as the shock extends rapidly after compression. The 'vacum' or pressure reduction created as the piston head moves quickly away from the hydraulic oil allows the oil to boil at a lower temperature than when under 'normal' pressure.

The compressed gas chambers in the foam-cell rapidly expand as the shock extends after compression, forcing the oil back through the valve stack, hence maintaining a more normal pressure on the oil. Hence the likely-hood of 'low' pressure - low temperature boiling is reduced.

Original shocks and the 35mm gas shock both aerate in extended severe conditions due to oil-gas mixing and low pressure boiling of the hydraulic oil.

Torsion Bars

Increased diameter Torsion bars have an increased spring rate. This has several advantages:

• reduces brake dive under severe or sudden braking that results in loss of traction and sliding of the rear tyres
• reduces body roll during cornering
• reduces tyre wear by maintaining correct wheel alignment longer

Replacement bars provide greater support to counteract the extra mass of aftermarket accessories such as bull bars, power winches and dual batteries. Improves control under brakes, cornering and pitch.

Coils

Precisely engineered ends are designed to fit each vehicle correctly. Accurate hardening and tempering reduces breakage. Fully scragg and load tested.
A variety of coil wire diameters and numbers of coils provides a range of options of ride height, ride comfort and load carrying capacity for different applications on the same vehicle.

Leafs

Multi-leaf springs:

• Made from high grade spring steel.
• Military wrap for extra strength and safety
• Spring clips loosely clamped to prevent premature wear and reduced noise
• Diamond cut leafs reduce friction, hence greater heat dispersal and reduced wear.
• Load and scragg tested for consistency of spring rates and reduced risk of sag or failure
• Increased height for ground clearance and increased bump stop distance - hence more time to absorb a bump
• Improved ride over standard leafs

There are 2 forms of leaf springs, conventional Multi-leaf springs and Parabolic leaf springs.

Traditionally vehicle manufacturers have used the multi-leaf spring stack of 6 to 11 leafs to effect the desired carrying capacity with less importance placed on ride quality. Many vehicles now come with coils or independent front suspension to improve ride quality.

Summary

It is important to understand that your suspension must not only have quality components but selected appropriately with each component matched to the others. Numerous factors combine to determine what type of suspension modification is required for a given vehicle. Factors like vehicle model, engine type, wheel base, towing and payload requirements, accessories fitted ( ie roofrack, extra tanks, winch, bullbar type, dual batteries etc ) and driving habits, vehicle use, tyre size all effect the type of modification required.

Please talk to our sales staff to discuss the range of options available to best suit your vehicle and your requirements. We have something to suit every need. There is simply no such thing as 'one kit fits all'.

Suspension Lifts (1",2",3")

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Recommendations

Jesse P
Toyota Surf

I have fitted the 2" lift kit to my Toyota Surf and it looks and feels great. I am really happy with it.

And I would like to thank you for the great customer service when I was buying it from you.

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Don C of WA
Toyota LCR 80 Series

Hello Tom, well Ive fitted the new springs shocks and the three degree bushes, I also fitted new panhard rod bushes, the transformation is unbeleavable drives like it should on the bitchey and the two lift made all the diference in the bush.

Thanks for your help in fixing the 80 series

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