964 carrera rs
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6th Gear
Joined: Jan 2002
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964 carrera rs
Does anyone know the compression/rebound numbers for the shocks used on a 964 euro rs (also carrera cup usa)? And whether the springs were 2.25 inch or 4 inch, and what spring rates front and rear? thanks
Rennlist Member
Joined: Jun 2001
Posts: 3,881
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From: California Boardwalk, Skanderborg Denmark
Numbers I got from Bilstein for 964RS shocks are Front=259/84, Rear=415/237. These ratios are Rebound/Bump in decanewtons at 0.5 Meter/second shaft speed. This is standard industry comparison number but is in middle of piston speed envelope and does not help you for the important low shaft speed data. Interesting that 964RS shocks are quite stiff;in comparison a 993RS is F=220/90 and R=290/190 hope their info is correct and helps. I would really love to know what spring rates are for the 964RS, so if you find out let me know.
Racer
Joined: Jan 2002
Posts: 323
Likes: 0
From: Oxford, England
A popular option is to use standard Carrera 2 springs on the front instead but keep the RS spec Bilsteins
The RS is stiffly sprung and is made worse by the obsessive lowering that some owners carry out.
There ends up being no travel for the damper which ends up destroying the internals and inverting the cones that the suspension is mounted on
The RS is stiffly sprung and is made worse by the obsessive lowering that some owners carry out.
There ends up being no travel for the damper which ends up destroying the internals and inverting the cones that the suspension is mounted on
Advanced
Joined: Nov 2001
Posts: 68
Likes: 0
From: Liverpool,UK
Guy's
The RS suffers from nothing more than too much rebound control at the front.
The car is great on smooth surfaces, but as soon as a bumpy road/circuit is encountered, the front wheels 'patter' over the surface because the damper does not allow the wheel to follow the surface, but is actually holding it up due to the high rebound damping.
A damper change at the front transforms the car, especially for the British roads/circuits
We offer a conversion that replaces the dampers with another Bilstein unit, but use the original springs.
George your comment about the 'top hats' is well founded, nearly all RS models that I see have compressed them, this also contributes to a front ride height that is too low, sometimes 10mm can be lost.
The RS suffers from nothing more than too much rebound control at the front.
The car is great on smooth surfaces, but as soon as a bumpy road/circuit is encountered, the front wheels 'patter' over the surface because the damper does not allow the wheel to follow the surface, but is actually holding it up due to the high rebound damping.
A damper change at the front transforms the car, especially for the British roads/circuits
We offer a conversion that replaces the dampers with another Bilstein unit, but use the original springs.
George your comment about the 'top hats' is well founded, nearly all RS models that I see have compressed them, this also contributes to a front ride height that is too low, sometimes 10mm can be lost.
