Bilstein coilovers gas pressure

[OILEAKY]

Just bought a used pair of Bilstein Coilover racing shocks with Schrader valve fittings. I understand that these are to keep the oil under pressure so that it doesn't foam. How much air (nitrogen?) pressure should I put in them ?

[ZIGGY]

Check Bilstein or a dealer for the part number spec. 180psi or so is typical I think. Bilstein's charging gauge goes to 300psi.

[ZIGGY]

P.S. - Missed your question mark. Yes, nitrogen. Not air.

[RCJ]

125psi is what I start with ,90 is as low as I have run,200 is the highest

[OILEAKY]

Thanks, guys, I'm off to find some Nitrogen. Oileaky

[Jerminator96]

Lots of tire shops keep a N2 tank these days. People like to fill their tires with nitrogen because its volume does not vary as much with temperature as regular old compressed air.

[peej410]

Definitely nitrogen. If you can find them there are bilstein tech papers flating around. As stated 175-180 is fine. I believe 125 is absolute minimum to supress cavitation in the damper. Increments should be 50psi. It has been prove. On shaker rigs +/-15psi doesnt make enough a difference to be concerned about. This info is from a Bilstein certified rebuilder.

[ZIGGY]

Haven't talked to anyone at Bilstein in a long while. Rex Merritt was one of their tech reps for short ct. Don't know if he's still there since I heard he is conducting driving schools.

[oldmandan]

Everyone's responses to you are assuming they are Monotube's. Bilstein does also make twin-tubes, if they are twin-tubes the pressure is dramatically different. I suggest calling Bilstein with a part # and asking them directly.