[Ed ke6bnl]

I finally got my Borgeson pressure reducing shim kit installed, I estimated the pressure went from 1150 psi to 1000 psi with the shims. I finally tried it on the road and it works great. The install takes about 15 min on a removed pump, removing pump took some 2 hrs. on my set-up Ed ke6bnl

[A/G WILLYS]

I was just adding a mustang II front end to my 54 chevy and found out that if you use a rack from a 82-88 T-bird it uses the same pressure as a GM power steering pump which saves alot of money on pressure regulators, one place you could see this is Speedway Motors, and there was an article in one of the Streetrodder magazines on this. Hope it helps. A/G WILLYS

[ole bull]

i was told that the 1980 and newer racks can handle the pressure. is this true? the older racks do need the reduced pressure.

[Ed ke6bnl]

Originally posted by A/G WILLYS
I was just adding a mustang II front end to my 54 chevy and found out that if you use a rack from a 82-88 T-bird it uses the same pressure as a GM power steering pump which saves alot of money on pressure regulators, one place you could see this is Speedway Motors, and there was an article in one of the Streetrodder magazines on this. Hope it helps. A/G WILLYS

I wrote
I finally got my Borgeson pressure reducing shim kit installed, I estimated the pressure went from 1150 psi to 1000 psi with the shims. I finally tried it on the road and it works great. The install takes about 15 min on a removed pump, removing pump took some 2 hrs. on my set-up Ed ke6bnl

this was on a 84 T-bird rack. I went from no feel of the road to a reasonable feel and better control, but other may like the way it was. Ed ke6bnl

[cuztomcarbuilder]

You can buy the pressure reducer valves here as well... www.carolinarodshop.com

[chev38]

It is my understanding that the later model (79-85) Mustang power racks do not have the pressure problem. I have one of these on my 38 Chev and I installed the pressure reducing valve from RB's. Simple install since the pump was not installed yet.

[cornfieldcars]

what do you folks think

I have a brand new rack that is supposed to be used on 79 and later MII frontends. Not the super sensitive rack but a normal feel rack. Do I need the pressure kit or not?

[Ed ke6bnl]

Originally posted by cornfieldcars
what do you folks think

I have a brand new rack that is supposed to be used on 79 and later MII frontends. Not the super sensitive rack but a normal feel rack. Do I need the pressure kit or not?

You could always add the pressure control later and try it the way it is. My 1984 tbird rack with the gm pump and mustang II had little to no feel, it just turned with no resistance till I added the kit from borgeson about $16 plus shipping. Ed ke6bnl

[Centerline]

Originally posted by cornfieldcars
I have a brand new rack that is supposed to be used on 79 and later MII frontends. Not the super sensitive rack but a normal feel rack. Do I need the pressure kit or not?

To begin with you have a '79 Mustang rack not a Mustang II rack. Second there is no such thing as the super sensitive rack. The reason the Mustang II rack is super sensitive when used with the GM pump is because of the difference in designed operating pressure.

When it comes to your rack I believe if you check you'll still find that the Ford rack is designed to work at a lower pressure than the GM pump puts out in stock form. I believe you'll still want to reduce the pressure on the GM pump to get it to "feel" right on the road.

Centerline

[cornfieldcars]

Okay...it's Mustang rack. But I was told by several people that there are two different racks used. ONe that is more sensitive than the other and when i order to make sure I got the less sensitive one.

[Centerline]

Originally posted by cornfieldcars
Okay...it's Mustang rack. But I was told by several people that there are two different racks used. ONe that is more sensitive than the other and when i order to make sure I got the less sensitive one.

You are correct that for the Fox body Mustang there are two different racks. A performance rack and a standard rack. So you would want to reference the standard rather than the performance rack when ordering parts. Keep in mind though that if the Ford unit (standard or performance) is designed to work at a lower pressure than the GM pump (and I suspect it is) the unit will feel somewhat "sensitive" on the highway without reducing the pump output pressure.

Centerline

[cornfieldcars]

Yes, I do have the standard rack. After reading some of the previous posts I was just beginning to wonder if a new rack could handle the pressure. I am going to be ordering the pressure kit next week. Thanks all.

[solidaxel]

What is the number of turns for the Mll early rack and the late T-Bird ?
I am changing my Mll rack that I placed in 1991 to a TRW rack that is for a T-Bird. The Mll rack had just two turns lock to lcok and the new rebuilt TRW has just about three turns lock to lock. I also had to elongate the Right side mounting hole a bit as it did not match the old rack. This set up is on my 55 1st GMC with the GM pump. When we built this set up in 91 no one offered these fancy pressure shims so we found three or four old GM pumps and took the valves out and removed the shims and added a ?number of them to my valve to reduce the pressure!
Did it work, I think so as I drove it everyday for 10 years 100Kmiles and all it did was leak and the feel of the road was a bit twichey but just like being hung with a new Rope ....You Get Used to It.
I cant wait to get the NEW truck (Rebuilt and Painted old truck) back on the road to see what the diffewrence is !!

[hedonite]

I work at the Delphi Saginaw Plant where this pump was born. It would be possible to change the pressure valve with another pump if you knew what you wanted.

You may notice all of our new pumps and steel resiviours have a "chrome like" look (2004 - on). If you pick up a new one from our aftermarket group it will add a bit of bling.

[solidaxel]

We did not change the valve itself we unscrewed it and added a number of shims in the middle b4 we put it back together.
When you mentioned the new pumps are the mounting locations in the same place and the hose fittings the same as the old pumps, and how about the pulley location?