power steer pump

[Screwy]

The MQ power steering box is sweet and the hoses are sweet... the pump works fine but doesnt push the big tyres and im not happy with its performance.
I dont want hydro steer or assist on this rig.

just something that will help my cause.... thinking a biger power steer pump on the same MQ box?

wats reccomended??? would a commodore or similar be better or whats a big pump i can just go to pirtek and get the fittings changed for the hoses..... ???

screwy

[scout392]

The MQ power steering box is sweet and the hoses are sweet... the pump works fine but doesnt push the big tyres and im not happy with its performance.
I dont want hydro steer or assist on this rig.

just something that will help my cause.... thinking a biger power steer pump on the same MQ box?

wats reccomended??? would a commodore or similar be better or whats a big pump i can just go to pirtek and get the fittings changed for the hoses..... ???

screwy

You could have your box modified to give more pressure.

I have seen the ‘how to's ‘on this mod for off road use, in short there is a bypass spring that can be replaced with heavy duty one or shimmed. The result is it sends more pressure to your P/S box before is it bypassed back to the pump.


Eric

[Loanrangie]

The MQ power steering box is sweet and the hoses are sweet... the pump works fine but doesnt push the big tyres and im not happy with its performance.
I dont want hydro steer or assist on this rig.

just something that will help my cause.... thinking a biger power steer pump on the same MQ box?

wats reccomended??? would a commodore or similar be better or whats a big pump i can just go to pirtek and get the fittings changed for the hoses..... ???

screwy

You could have your box modified to give more pressure.

I have seen the ‘how to's ‘on this mod for off road use, in short there is a bypass spring that can be replaced with heavy duty one or shimmed. The result is it sends more pressure to your P/S box before is it bypassed back to the pump.


Eric

You could possibly fit some small washers or spacers behind the spring to increase the pressure ?

[Screwy]

so there isnt a bigger pump i can wack on there?

if not, must investigate this mod......

screwy

[Brett S]

You could increase the pressure of existing or find a higher pressure one but will the box handle it? Go down to super crap and filck through the gregories manuals looking for vn-vt v6 commodores, falcons etc common as shit stuff that you'll pick up for $15 and find the highest pressure and flow one available. Bodge up a bracket and fittings and go for broke. Is heat an issue? These days cars have cooling on the psteer fluid because a psteer setup has the pump running full noise (wasting power) the whole time while the rack/box is just relieving the pressure. I believe now some manufacturers are using an electric clutch like a/c to get economy.

[bj42turbo]

I fitted a (saginaw) Commodore pump on a toyota though and seems to have plenty of presure as Brett S said they may be worth a look


BJ

[MKPatrolGuy]

I fitted a (saginaw) Commodore pump on a toyota though and seems to have plenty of presure as Brett S said they may be worth a look


BJ

I have the Commodore Saginaw pump on my MK and made a huge difference compared to the original pump.

[pongo]

really. I might look into this. I have a spare one in the shed.

[Slunnie]

If its the spring in the steering box, will a bigger pump make any difference?

[scout392]

I run an old auto cooler 5'x10 inch to cool the P/S do i need it i dont know.
i run a 2t scout rebuilt box and boosted pump and can turn 33 one handed easy in the dry pavment.

Eric

[scout392]

The top two are auto and the lower one is P/S

eric

[Screwy]

I fitted a (saginaw) Commodore pump on a toyota though and seems to have plenty of presure as Brett S said they may be worth a look


BJ

I have the Commodore Saginaw pump on my MK and made a huge difference compared to the original pump.

ok so you went from the stock MQ/MK pump to this pump?

what model commodore is this pump from? V8? V6? year model or model?

i think i want one

screwy

[6.5 rangie]

i run a vt v6 commodore on mine and it turns 35's no worries

[bj42turbo]

Mine was from a vb - vk with he resvoir built in, vn onwards has a separate resivior but pretty much the same unit as explain to me by the power steering mob who did my hose's

BJ

[MKPatrolGuy]

I fitted a (saginaw) Commodore pump on a toyota though and seems to have plenty of presure as Brett S said they may be worth a look


BJ

I have the Commodore Saginaw pump on my MK and made a huge difference compared to the original pump.

ok so you went from the stock MQ/MK pump to this pump?

what model commodore is this pump from? V8? V6? year model or model?

i think i want one

screwy

I grabbed my pump off a 6 cylinder vb-vk Commodore and used the Chev factory mounting brackets, had to get the pulley swapped over to get the belt to line up. Only problem I have is that the return line barb hits on the block slightly because it was originally on a inline 6.

Same as the one bj42turbo used

[guzzla]

the barb should be removable, if so swap it for a 90 degree 1.

last thing you need is for the line to rub through.

[MKPatrolGuy]

the barb should be removable, if so swap it for a 90 degree 1.

last thing you need is for the line to rub through.

The barb is brazed/soldered into the reservoir. It isn't going to rub through in a hurry, the MK has been off the road for about a year, gotta get the gearbox fixed one day.

I'll mod the barb one day...

[pongo]

The saginaw pump off the old dunnydores are the same of the kingswoods . the bombadore ones have a metric thread ( apparently) and the kingswoods have imperial. Jags runs the same pump .

A seal kit can be had for $50 last time i bought one.

Cheers

[bj42turbo]

Jags runs the same pump .

Cheers

I also have a range rover pump that looks very similar saginaws seem to be a very common pump

BJ

[Screwy]

the barb should be removable, if so swap it for a 90 degree 1.

last thing you need is for the line to rub through.

The barb is brazed/soldered into the reservoir. It isn't going to rub through in a hurry, the MK has been off the road for about a year, gotta get the gearbox fixed one day.

I'll mod the barb one day...

I got a 5 speed to get rid of here if ya keen

thanks for the tips will pick one up and put it on and see how it goes

[MKPatrolGuy]

the barb should be removable, if so swap it for a 90 degree 1.

last thing you need is for the line to rub through.

The barb is brazed/soldered into the reservoir. It isn't going to rub through in a hurry, the MK has been off the road for about a year, gotta get the gearbox fixed one day.

I'll mod the barb one day...

I got a 5 speed to get rid of here if ya keen

thanks for the tips will pick one up and put it on and see how it goes

Going to get the Cabstar 5 speed rebuilt...MMM granny low 1st

The Saginaw pump made a big difference.