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MQ,GQ,GU P/s Boxs Pics and Specs

Tech Talk for Nissan owners.

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MQ,GQ,GU P/s Boxs Pics and Specs

Post by WICKED »

Can any one point me in the direction of info on the MQ, GQ and GU Power Steering boxs. I wanna know if it's worth going to a GQ or GU box compaired to the MQ box.

So How much "throw" the box has?
Bolt pattern?
Physical size?
Uni and Spline size's?
Pitman Arm size, Lenght and angle?
Is 1 harder to "tap" than another?

Cheers Benny

P.s. Search come up with nothing....
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Post by WICKED »

Any body?
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Post by RMP&O »

WICKED wrote:Any body?
I am also interested in this info! ;)
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Post by Swerve »

Me 2
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Post by Screwy »

cant help you with all of the info you need but i can give u a few bits and pieces.....

MQ box bolt pattern is different to GU and GQ.
GU and GQ im nearly positive are the same pattern, if you were to go to GQ box you may as well go GU as it would be an improvement.

GQ box are massively prone to leaking on the bottom pitman arm seal which is a nucence....

GQ/GU boxs are slightly larger in physical size but there isnt too much in it.

Throw wise doesnt really matter in your application as GQ diffs are wider then MQ diffs but at the end of the day its only going to move as far as your bump stops.....

GQ spline going into the box at the top im farely sure is the same.....
pitman arms are very similar in size, though different angles and shape etc.

Both are as easy to drill and tapper as the other if you wished to reverse tapper or some such thing.....

For your application, i would of thought u would be looking into a box that allows you the ability to drill and tap for Hydro Assist steering....

I had my MQ box drilled and tapped for hydro assist but never tested it. The patrol type box arent the worlds greatest type of box for hydro assist.

Might be worth while changeing to a box that is good for that as going up to GQ or GU box from MQ requires all the same changes, and to be honest, it probably isnt really worth the hassle,. however if you changed to something that u can get drilled and tapped for hydro assist, and just cap it off till u want to use it, it would be worth while....

Pirate has heaps of info on the types of boxs etc that are better for hydro assist work. i know Hilux stuff works well from what ive heard.

hope any of that helps.

Screwy
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Post by nastytroll »

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Post by RMP&O »

The GU box I saw looked massive. Didn't compare it side by side with an MQ though. The pitman arm on the GU also looked rather large and stout compared to MQ.
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Post by WICKED »

Screwy wrote:
MQ box bolt pattern is different to GU and GQ. - Correct
GU and GQ im nearly positive are the same pattern, if you were to go to GQ box you may as well go GU as it would be an improvement. - Correct

GQ box are massively prone to leaking on the bottom pitman arm seal which is a nucence....

GQ/GU boxs are slightly larger in physical size but there isnt too much in it. - Correct, its the internals and pressure that makes the difference.

Throw wise doesnt really matter in your application as GQ diffs are wider then MQ diffs but at the end of the day its only going to move as far as your bump stops..... - I'm running GQ leaf diffs Jeff, But ATM my steering doesn't "throw" enough to come close to my steerign stops.

GQ spline going into the box at the top im farely sure is the same.....
pitman arms are very similar in size, though different angles and shape etc. - They look the same but they are mounted to the cab side of the colum differently....

Both are as easy to drill and tapper as the other if you wished to reverse tapper or some such thing.....

For your application, i would of thought u would be looking into a box that allows you the ability to drill and tap for Hydro Assist steering.... - I am :cool:

I had my MQ box drilled and tapped for hydro assist but never tested it. The patrol type box arent the worlds greatest type of box for hydro assist. - Cost?

Might be worth while changeing to a box that is good for that as going up to GQ or GU box from MQ requires all the same changes, and to be honest, it probably isnt really worth the hassle,. however if you changed to something that u can get drilled and tapped for hydro assist, and just cap it off till u want to use it, it would be worth while.... - I'm planing to do it all at once.

Pirate has heaps of info on the types of boxs etc that are better for hydro assist work. i know Hilux stuff works well from what ive heard. I thought lookin into that but was gonna try and keep it all patrol but IFS hilux maybe an idea.

hope any of that helps. - Cheers Jeff

Screwy
Had a look into this over the weekend and spoke to GQ/GU Guys about it all. A few things are I've learnt above.

After looking into it. I've come across a tapped GQ box with hydro ram still waiting to hear on a price and Avilabilty of it.

If thats fails I'll look into a GU, tap it, mount it then hyrdo ram.
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Post by 1MadEngineer »

WICKED wrote:
Screwy wrote:
MQ box bolt pattern is different to GU and GQ. - Correct
GU and GQ im nearly positive are the same pattern, if you were to go to GQ box you may as well go GU as it would be an improvement. - Correct

GQ box are massively prone to leaking on the bottom pitman arm seal which is a nucence....

GQ/GU boxs are slightly larger in physical size but there isnt too much in it. - Correct, its the internals and pressure that makes the difference.

Throw wise doesnt really matter in your application as GQ diffs are wider then MQ diffs but at the end of the day its only going to move as far as your bump stops..... - I'm running GQ leaf diffs Jeff, But ATM my steering doesn't "throw" enough to come close to my steerign stops.

GQ spline going into the box at the top im farely sure is the same.....
pitman arms are very similar in size, though different angles and shape etc. - They look the same but they are mounted to the cab side of the colum differently....

Both are as easy to drill and tapper as the other if you wished to reverse tapper or some such thing.....

For your application, i would of thought u would be looking into a box that allows you the ability to drill and tap for Hydro Assist steering.... - I am :cool:

I had my MQ box drilled and tapped for hydro assist but never tested it. The patrol type box arent the worlds greatest type of box for hydro assist. - Cost?

Might be worth while changeing to a box that is good for that as going up to GQ or GU box from MQ requires all the same changes, and to be honest, it probably isnt really worth the hassle,. however if you changed to something that u can get drilled and tapped for hydro assist, and just cap it off till u want to use it, it would be worth while.... - I'm planing to do it all at once.

Pirate has heaps of info on the types of boxs etc that are better for hydro assist work. i know Hilux stuff works well from what ive heard. I thought lookin into that but was gonna try and keep it all patrol but IFS hilux maybe an idea.

hope any of that helps. - Cheers Jeff

Screwy
Had a look into this over the weekend and spoke to GQ/GU Guys about it all. A few things are I've learnt above.

After looking into it. I've come across a tapped GQ box with hydro ram still waiting to hear on a price and Avilabilty of it.

If thats fails I'll look into a GU, tap it, mount it then hyrdo ram.
GU = BIGGER
STRONGER = NO.

the weakest point on the sector shaft where they both bend is the same diameter!!!! :lol:

seals are good for upto 1750psi, now you just need someone who knows what they are doing to set up the pump properly!!! ;)
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Post by WICKED »

1MadEngineer wrote:
WICKED wrote:
Had a look into this over the weekend and spoke to GQ/GU Guys about it all. A few things are I've learnt above.

After looking into it. I've come across a tapped GQ box with hydro ram still waiting to hear on a price and Avilabilty of it.

If thats fails I'll look into a GU, tap it, mount it then hyrdo ram.
GU = BIGGER
STRONGER = NO.

the weakest point on the sector shaft where they both bend is the same diameter!!!! :lol:

seals are good for upto 1750psi, now you just need someone who knows what they are doing to set up the pump properly!!! ;)
Wonder who I know..... :cool:
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Post by RMP&O »

So GU is bigger than GQ but not stronger? But both are bigger and stronger than MQ?

Pitman arm looks like weak link on MQ/MK to me....
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Post by Screwy »

RMP&O wrote:So GU is bigger than GQ but not stronger? But both are bigger and stronger than MQ?

Pitman arm looks like weak link on MQ/MK to me....
your far more likely to break a tierod / end or drag link than a pitman arm.
They are up out of the way and harder to hit and havent got as much stress on them most of the time....

i never had any issues with my pitman arm on my MQ with 39.5s and just kept bending tie rods...

screwy
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Post by naif »

when i baught my GQ the guy gave me a spare GQ pump, he also said that GU are the sort after pump as apparently make it easier to turn larger tyres.
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Post by WICKED »

Screwy wrote:
RMP&O wrote:So GU is bigger than GQ but not stronger? But both are bigger and stronger than MQ?

Pitman arm looks like weak link on MQ/MK to me....
i never had any issues with my pitman arm on my MQ with 39.5s and just kept bending tie rods...

screwy
I sheared mine in 2 with 37's. Now have a custom chromoly one on there...
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Post by WICKED »

Ok after looking into it a bit, I came across a tapped GQ power Steering box, Lines, Fittings and Hydro ram of a mate for decent money.

So I now need to get a Pump, Steering cooler, fit it all up and pump it all in.

I'll be getting this from Chris at Locktup4x4.com http://www.locktup4x4.com.au/product/1a ... 2516c.aspx


Next thing is getting the GQ box to match the MQ Steering colum looks interesting :?
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Post by Bartso »

can a complete GQ steering column bolt into a MQ???
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Post by (EST)MahviaDeTyrk »

Flow rates of Steering Pump ? MK,GQ,GU ?

And pressures ?
MK = 995 psi
GQ , GU ?
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Post by WICKED »

Bartso wrote:can a complete GQ steering column bolt into a MQ???
Don't think so......... But i'll look into it! hehehe
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