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Old 09-04-2013, 07:33 PM
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Default thicker oil in wrx strut for lowered springs.

Ok so i'm toying with the idea of lowering my rex but don't have the funds for coilovers/new struts and springs. I read a lot about people complaining that lowered springs make the ride harsh and I believe it is because the damping system is left stock when the spring is made firmer. I know a fair bit when it comes to high end mountain biking suspension and a little bit about moto suspension. So i'm hoping the difference between a basic automotive shock is minimal.

First question, I assume the stock struts are control using a basic oil and shim damping system? which keeps the spring under control? match up together they work nicely.

2nd question, Am I able the replace the stock strut oil with thicker oil to accommodate for stiffer springs which will have the tendancy to spring back faster and harder overwhelming the stock strut system?

Has anyone tinkered with the stocks strut and know if you can access the internals? Obviously when I put lowered springs on they will be stiffer and overwhelm the stock system, I want to rectify this buy rebuilding my shock with thicker oil to compliment the stiffer springs.
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Old 09-04-2013, 07:57 PM
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The Shock Shop - How Shocks Work

Found this, may be easier than I thought
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Old 09-04-2013, 09:31 PM
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No, you cannot access the oil inside a modern shock.
They contain a floating piston above the oil chamber with pressurised Nitrogen to raise the boiling point of the oil and to prevent it frothing up.

You could do it in the 1970's though, but not since the introduction of 'gas' shock absorbers.
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Old 09-04-2013, 09:46 PM
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Ok thanks for the reply. That works exactly The same as a air shock on a bike.
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