Manual Steering Box Conversion

[tri26t]

GK 1984

oh yeah if it`s from a wagon then it will be
the same as a g e,h,j,k because all the wagons
were built using G.E. sigma floor pans (narrow shell)
unless im wrong ("phat chance lol")

cheers:Phil.

[Chryzla]

So Scorpions of 1978-79 are the only ones with this longer setup?

[tri26t]

well how piss easy was that ?


in the fisrt picture Ive drilled this plug (it is a piston) and pushes fluid
via the return gallery to the (steering box)pump, that Ive drilled out also.



then I took this out of where you see the screw driver in next picture



then there was the return gallory in the steering main body that I
have drilled out half way back, so the fluid only returns to the sector
shaft area and not all the way back to the (steering box) pump in
the main body. Too bloody easy With box out of car........1 hour
Cheers:Phil.

[Chryzla]

erm... what did you do?

[tri26t]

where the 2 pump hoses go in the steering box is the (main shaft)
pull the main shaft and rack piston out 2"/3"and youll see the main shaft valve springs (6mm nut) throw them out (picture 2 last post) this will let
fluid go though the valve body both ways (left/right) then pull the shaft out all the way and look at the back of the rack piston, then you will see
the cap ?/nut ?/plug? (what ever wanna call it) drill it out so that the piston cant compress fliud back to the main shaft
then just to make sure there isnt pressure in the main shaft to valve housing, turn the gearbox housing up side down in a vice and
drill through the piston bore 8mm from the valve housing end
"thats through the inside of the bore and into the fluid return gallery
THEN THE FLUID WILL FALL INTO THE SECTOR SHAFT AREA, so if
there is any pressure for what ever reason in the system it will be
releaved with no feed back anywhere in the hydrolic system.
NO I dont want to say it again
Cheers:Phil.

[Chryzla]

ok ok... ill be more exact.

what does this do? ... its purpose?... why did you do this?

[tri26t]

This is now a none power steering unit
without having to use sigma/scorpion box

[JD_Stazza_Brendan]

basicly Phil has made it so there is no pressure built up in the steering box and the fluid moves easier within the box.

Then u just piss off the pump and resevour.

[tri26t]

like it says,
Brendan you go stright to the top of the class
I just cant beleave how much better I feel not
having to wash out my engine bay anymore
yes it is very light to steer

Cheers;Phil.

[Junkers]

Would a 1984 L200 box work?

[Chryzla]

How light is it? bout the same as the sigma box?

problem with mine is its the box that is leaking not the pump or hoses :( so have to replace box

[tri26t]

if its a power steering box,
then what Ive done is what you need to do

then throw the stupid pump away

Cheers:Phil.

[Alspos]

If your pump or belt dies, the steering is pretty heavy, heavier than manual steering.

So your saying that's because of the pressure inside the steering box?

So do what you say, and the steering will get lighter? Correct?

[tri26t]

yes the steering is very light, Ive read this steering conversion
topic and others heaps of times and cant work out why you
would put the sig/scorp box in, as you have to pull the staz box
you might as well do surgery on staz box and be done with it.

there are zero (read no) problems that I can see by doing this,
I know ppl have been changing boxes because of leaks and I
think thats ok but ive noticed with most of the power steering
boxes, that when you take the pressure of the pump away
from the steering box, the leaking stops

so Ive used diff oil in my steering just so if it leaks I`ll be able to
do something about it b4 it gets too bad (if it does that is)
the steering on my JA feels like it was made manual steering
my investigation showed :sigma 2 bolt steering box 18.2:1
. :sigma 3 bolt steering box 17.1:1
:starion 3 bolt steering box 16.0:1
and that if im right makes the starion the "quickest"
steering lock to lock of all of them but is still so easy to turn.
Cheers:Phil.

[Chryzla]

leaking box is my only reason for replacement. rest of my PS system is fine, only box leaks, and in turn stuffs it up.

another Sigma/Starion PS box from wrecker is $220... mine has alot of freeplay also :(