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  #1  
Old 10-12-2009, 02:10 AM
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Location: Malaysia
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Power Steering pump: pressure increase effect?

My power steering pump has a scored vane cylinder and generally has reached the end if it's service life. It is rated at 95bar.

I have sitting in front of me a gift: A new Mercedes ZF pump rated at 110bar.

Now the obvious question: if I fit the 110bar pump how will it effect the steering? I would not mind slightly lighter steering and the PS high pressure hose is new and should hold the pressure. I would like to give it a try before sourcing a rebuilt or junk yard 95bar replacement.

Comments and suggestions will be appreciated.

Regards,
bobf.

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  #2  
Old 10-12-2009, 08:17 AM
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The rating on that pump is for MAX pressure..durning normal steering operations the system will require less that 20-25 Bar.

No benefit to running higher pressure pump!
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  #3  
Old 10-12-2009, 10:27 AM
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MB Doc,

Thanks for the prompt response. I assume there will be no effect and therefore no problem installing the 110bar pump in place of the 95bar pump. If I am wrong let me know quick.

Thanks again & best regards,
bobf.

__________________
2.3-16:ROTREXsupercharger;water/air intercooler;Megasquirt EFI/EDIS/COP;2.5-16cams&exh manifold;3"exh;YellowSpeedRacing adjustable suspension kit all round;28mm ARB front,22mm rear;C32 brakesfront,AmgCl55alloyrear;500e servo/mstr cyl;RDMTEKstrut towers;Speedtek camberarms rear;nylonsubframe bushes;Poly-u bushes front&rear,SPEC lightened pressure plate;manual locking 3.07ASD diff;short shift gear change;215 front,235X40X17 rear,EVO8.25 rims
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