Re: Detuned Power Steering on a c900 - Saabnet.com Bulletin Board


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Re: Detuned Power Steering on a c900
Posted by DamienS [Email] (more from DamienS) on Thu, 30 Oct 2014 15:39:29

In Reply to: Re: Detuned Power Steering on a c900, Nick Taliaferro [Profile/Gallery] , Mon, 27 Oct 2014 09:50:34
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In your case Nick, the power steering rack is doing nothing (wheels straight) but the pump is running hard. So all that pressure has to go through the itty-bitty bypass and I bet it can't handle the flow. Too much flow mean fluid backup and a pressure spike! I think the solution is to open up the bypass like giving a turbo a bigger wastegate.

I did consider the larger pulley to underdrive the ps pump (there is room on the c900) but I think it would only deliver the desired results at slow engine speeds. At higher engine speeds you'd be hitting the same system pressure and have no feel / high assist. Anyway, I looked around on the internet and did not see a way to get a replacement V-groove pulley with the right specs.

But one last thing: you one could underdrive the pump AND lower the system pressure with the spring mod...but some trial and error would be necessary to not got too low on the assist.

Fun times! I just picked up the vert from getting a set of new Bridgestone RE760s in 205-50-16. Can't wait to abuse them! Damien

posted by 72.52.9...

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