87350IROC

iTrader: (2)

I'm looking to revamp my steering system. I currently have a Spohn steering rebuild kit on order and and going to have my steering box rebuilt by Lee Steering. I am also looking at improvements in the pump. I like the adjustability of the KRC unit. I would like to be able to tailor my steering feel and assist. Has anybody used the KRC? What are your impressions?

http://www.krcpower.com/catalog_i753...l?catId=352915

I think that is the right one for my v-belt application.

//<86TA>\\

iTrader: (15)

im using that style pump, sombody else here is too, forget the screen name. Works well, no complaints. Just dont underdrive the pump, it wont make enough pressure off idle.

87350IROC

iTrader: (2)

Can you explain how it feels different or better than the stock pump? Did you play around with the different outlet fittings?

//<86TA>\\

iTrader: (15)

i fooled around with different flow valves, from stiff to light, its a noticalbe difference between them.

You can get the steering lighter than stock, or firmer, whatever you desire.

Only problem i ran is my crank pulley underdrives the pump pulley a bit, so i had to up the flow valve to get enough pressure at idle to provide enough power assist. One of these days im swapping the pulley setup for a serpentine deal and get rid of the underdrive.

I dont know what kind of pulley/accessory setup you have now, but the pump is made to work with a short waterpump, if you use a long pump you have to space the bracket off the block to line up the belts.

TB2

iTrader: (1)

I run the KRC pump with their serpentine setup and a 30% underdrive. I'm also running my Hydroboost off of the pump with no problems with the steering or brakes. Great feel. And no more problems throwing belts. Also, along with the short aluminum water pump it takes a lot of weight off. The only problem that I've had is with 30% underdrive the alternator does not start working until about 1400 rpm.

//<86TA>\\

iTrader: (15)

alternators are overrated

is the ps pump underdriven too? or just the water and alt?

TB2

iTrader: (1)

Everything is underdriven. It's a 30% underdrive crank pulley. The only time I have had a problem with the alt. was at the Woodward cruise. Traffic was so heavy the car never reved above idle. It stranded me with a dead battery after about 1 1/2hrs.

87350IROC

iTrader: (2)

So I plan to use the stock crank pulley. Would the KRC 6" pulley work well? Or should I use my stock PS pulley? Did you guys use their block mounting kit?

Thanks

TB2

iTrader: (1)

I'm pretty sure that your PS pump pulley will not work. You will need to figure out your components rpm's to know what size pulleys you should be using.

To calculate pump RPM use the following formula.
Divide the crank pulley diameter (cp) by the power steering pump pulley diameter (psp), then multiply that answer by maximum engine RPM.
Ex. 4.5"cp ÷ 6.0"psp = 0.75 x 7,200 = 5,400 RPM Pump Speed

Here's what my bracket setup looks like.

Guest

We run these in Circle track racing onthe race cars mainly because we 1) are sustaining higher RPMs and two we want lower rotation mass sice we asre restricted to sealed motors where every little bolt on product counts in that extra 1/2 hp under rule restrictions.

I really think thiese are not necessary for the streets. If you do however run one, You should use the mid size or large valve. The valve adjustment is NOT for driver feel- I will say again, IS NOT. It is for pump pressure needed for rpm range use. If you want to change the feel of the steering assit, you do it in the steering box. Put you bos in, put adequate and appropriate pump pressure to it and if you do not like the feel then send your box back to Lee and have them adjust the steering assist intenally in the steering box.

The KRC pumps are nice becuase of the smal diameter and low rotation wieght of the GIlmore drives. THis allows for lighter smaller pulleys that are cogged not to slip the belts while retaining low rotation weight of both the pulleys AND the smaller belts. This takes me back 30 years ago in my BMX days were I learned real young that a smaller front and rear sprocket sets as well as a shorter chain is lighter. Most guys were running something like 44/17 gears and I was running something like a 32/13 with about 5 inches shorter chain. trivial? yes, but every little bit counts.

87350IROC

iTrader: (2)

Is there any reason these are better from the drivers standpoint? Improved feel or pressure over the stock unit?

Guest

Nope.

Simply used for higher rpm use without cavitation and less hp used to turn it compared to a conventional pump.

these usits are designed for sustained 9000 rpm use.

Are they nice? hell yes. I would like to put one onto my truck when I have the extra cash. I spent to money to run an electric waterpump for the same reason to reduce rotation mass and gorss hp loss.

I have been plaged with problems on my March serpentine setup. I only run an alt and a power steering pump, but both belts required constant maintinence from loosening and streating due to the 200amp alt and the high volume pump I run because of the underdrive dual crank pulley. I get belt chirp developing after about every 3 months of daily driving when I shift higher rpm shifts. The smaller gilmore setups are nice for eliminating this. Plus they look trick.

this is an older pic wit the original March dual crank pulley. I currently have a 1" smaller unit I found with a 6rib alt and a 5 rib power steering belts. I just keep wasting belts. This is what a good glimore system is for, you'll know when you need to spend the extra cash because the system will tell you its in need.

87350IROC

iTrader: (2)

Well I finally pulled the trigger on the KRC pump. I found a way to reroute the goofy '87 hybrid belts. Really nice looking parts.

//<86TA>\\

iTrader: (15)

Some bling never hurts. Looks good!

87350IROC

iTrader: (2)

Finally got around to getting this stuff on.

Mounts to OEM power steering cooler bolts.


This project introduced me to world of AN fittings and hoses. Lots of fun.

Low Pressure


High pressure


And installed