Power Steering Pump pressure
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Power Steering Pump pressure
Looking to change to Electric PS Pump anyone done this or know the pressure of the Cossie rack. The Astra/Saxo pump looks OK again anyone tried this, dont want to try if its a no-go
Cheers
Cheers
Advanced PassionFord User
Joined: Jul 2004
Posts: 1,859
Likes: 4
From: Lancaster, Lancs
Rod,
Normal pressure for the cossie pump is approx 60 - 75 bar.....the motorsport versions increase to 90 bar....
Never had the need to do the conversion on a cos....the cos rack suffers at low speed on tight chicanes etc...we have on the past drilled out the standard rack galleries to increase flow....combined with a 90 bar pump this works ok...
I'd say it'd depend on what you were trying to acheive...weight saving?...increase in power?...IMO i'd stick an easy feel rack and a 90 bar pump on....
Regards
Ian
Normal pressure for the cossie pump is approx 60 - 75 bar.....the motorsport versions increase to 90 bar....
Never had the need to do the conversion on a cos....the cos rack suffers at low speed on tight chicanes etc...we have on the past drilled out the standard rack galleries to increase flow....combined with a 90 bar pump this works ok...
I'd say it'd depend on what you were trying to acheive...weight saving?...increase in power?...IMO i'd stick an easy feel rack and a 90 bar pump on....
Regards
Ian
Thread Starter
Banned
Joined: Dec 2002
Posts: 142
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Originally Posted by sibster
Rod,
Normal pressure for the cossie pump is approx 60 - 75 bar.....the motorsport versions increase to 90 bar....
Never had the need to do the conversion on a cos....the cos rack suffers at low speed on tight chicanes etc...we have on the past drilled out the standard rack galleries to increase flow....combined with a 90 bar pump this works ok...
I'd say it'd depend on what you were trying to acheive...weight saving?...increase in power?...IMO i'd stick an easy feel rack and a 90 bar pump on....
Regards
Ian
Normal pressure for the cossie pump is approx 60 - 75 bar.....the motorsport versions increase to 90 bar....
Never had the need to do the conversion on a cos....the cos rack suffers at low speed on tight chicanes etc...we have on the past drilled out the standard rack galleries to increase flow....combined with a 90 bar pump this works ok...
I'd say it'd depend on what you were trying to acheive...weight saving?...increase in power?...IMO i'd stick an easy feel rack and a 90 bar pump on....
Regards
Ian
Need to get rid of standard pump to solve a prob. At High revs (8k+) mainly when on Nitrous it sheds its belt. Have had new pump/ belt & lazer aligned but still does it. Not a prob on the road with 7.7K limit. Just looking at all solutions, have found others that have had similar probs.
Rod
Advanced PassionFord User
Joined: Jul 2004
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From: Lancaster, Lancs
Correct alignment and a poly vee belt i would have thought would be ok...but dont operate at the same extremes you guys do....I know Pete Doughty ran a saxo pump with no probs on his silver Esc WRC to do the active centre diff and power steering.....he may be worth a call....we run the two stage MPC pump with a poly vee belt arrangement....we aint revving as high as you but ive never seen the YB shed a PS belt on a rally engine.....
HTH
Ian
HTH
Ian
Trending Topics
Advanced PassionFord User
Joined: Jul 2004
Posts: 1,859
Likes: 4
From: Lancaster, Lancs
DPE Doughty Precision Engineering Notts Tel 0115 967 4256 that's the only number I have ATM...I had Pete's mobile somewhere but its been a couple of years since I spoke to him....if I find it i'll pm you...
Poly vee's were used on the later esc cos...
Some pics (apologises for the quality)
HTH
Ian
Poly vee's were used on the later esc cos...
Some pics (apologises for the quality)
HTH
Ian
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