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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
I'm not sure of the exact gas pressure in Bilsteins, it may be less than 300psi but the nitrogen gas pressure is why they expand when relaxed and ride height is increased after installing them when everyday common single wall tube shocks like Boge or Koni were in there before or the previous Bilsteins are totally used up..
That said, Koni has made a low pressure gas shocks for over 20 years now.

Reindexing the torsion bar splines on 911 suspension around 2-3 splines in opposite directions at each end on both rear corners will lower it about the right amount to compensate without changing corner balance because there are 40 inner splines and 44 outer splines on the rear torsion bars.

I said 300psi before as a generalization because I have a Fox racing shock with the remote reservoir on a monoshock motorcycle which has the rebound adjustment and shrader valve for charging the shock with 300psi nitrogen on the reservoir.
The compression damping adjustment is on the bottom of the shock body below the threaded spring height collars.
Let out the gas pressure and those shocks have no rebound damping at all.

Nitrogen gas is used because it is an inert gas and has no oxidizer like oxygen or humidity moisture in it so the shock internals do not corrode or oxidize.
Old 07-21-2010, 11:23 AM
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