Steering Pump options
Thread Starter
Melting Slicks
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
Originally Posted by mailalan
I noticed on the KRC pumps website (http://www.krcpower.com/trouble.ivnu) they stated the following: "OVERHEATING PUMP AND FLUID
Power steering pumps require a hose with a vacuum rating of 28 INCHES/HG on the inlet side and .50" inside diameter. This is to keep the hose from collapsing at higher RPMs. As seen in the photo 1 to the left common hydraulic hoses may have -10 fittings on them but the inside diameter is smaller than -6, and this one is only .265". This will damage the pump because there is not enough fluid to meet its requirements.
Push-lock hose may be the proper inside diameter but the vacuum rating is only 18 INCHES/HG and as the fluid warms up this rating actually goes down. Push-lock hose will suck shut anywhere there is a bend in it, starving the pump for fluid and is likely to severely damage the pump. See photo 2.
The -6 pressure hose leaving the pump must have an operating pressure of 2,250 psi and an inside diameter of .31". Common hydraulic hoses may have the proper operating pressure range but their inside diameter is slightly smaller. See photo 3. The smaller diameter can restrict the flow to the pump. This can cause problems in your steering such as tight spots in the turns and increased driver effort. Therefore we only recommend Aeroquip AQP high-pressure power steering hose and fittings."
Now the Aeroquip PS hose they recommend is the blue hose. For those of us that want to use braided stainless hose I think that Russell power steering hose will work. The inside diameter is big enough and the pressure rating exceeds KRC's recommendations.
http://www.russellperformance.com/au...eer_hose.shtml
Plus you can use the silver Endura hose ends to keep everything the same color.
- Alan
Power steering pumps require a hose with a vacuum rating of 28 INCHES/HG on the inlet side and .50" inside diameter. This is to keep the hose from collapsing at higher RPMs. As seen in the photo 1 to the left common hydraulic hoses may have -10 fittings on them but the inside diameter is smaller than -6, and this one is only .265". This will damage the pump because there is not enough fluid to meet its requirements.
Push-lock hose may be the proper inside diameter but the vacuum rating is only 18 INCHES/HG and as the fluid warms up this rating actually goes down. Push-lock hose will suck shut anywhere there is a bend in it, starving the pump for fluid and is likely to severely damage the pump. See photo 2.
The -6 pressure hose leaving the pump must have an operating pressure of 2,250 psi and an inside diameter of .31". Common hydraulic hoses may have the proper operating pressure range but their inside diameter is slightly smaller. See photo 3. The smaller diameter can restrict the flow to the pump. This can cause problems in your steering such as tight spots in the turns and increased driver effort. Therefore we only recommend Aeroquip AQP high-pressure power steering hose and fittings."
Now the Aeroquip PS hose they recommend is the blue hose. For those of us that want to use braided stainless hose I think that Russell power steering hose will work. The inside diameter is big enough and the pressure rating exceeds KRC's recommendations.
http://www.russellperformance.com/au...eer_hose.shtml
Plus you can use the silver Endura hose ends to keep everything the same color.
- Alan
I will be waiting till january to purchase my engine and power steering pump. Already have the hydro & Jeep box. At that point I will build my powersteering lines. Definitely going with Russel lines, may even use their ProRace hoses for my fuel lines.
Thanks
