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MQ rear diff into GQ front

Tech Talk for Nissan owners.

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MQ rear diff into GQ front

Post by Bishop »

just wondering if any one has swapped a mq rear diff for a gq front diff or is it just ring gear and pinon that can be swapped over i herd it could be done
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Post by Wendle »

it'll definitely fit in there. you might have to move some of the mounting studs though.

edit: i am asuming you are talking about the mq h233 (small) rear diff.
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Post by Wendle »

you do realise that the standard steering won't work with the low pinion mq centre?

if it is for a custom application, go for it.
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Post by Screwy »

Wendle wrote:you do realise that the standard steering won't work with the low pinion mq centre?

if it is for a custom application, go for it.
isnt the axle spline count different for MQ to GQ???
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Post by Daisy »

Screwy_ScrewBall wrote:
Wendle wrote:you do realise that the standard steering won't work with the low pinion mq centre?

if it is for a custom application, go for it.
isnt the axle spline count different for MQ to GQ???
GQ front shares same spline count to the MQ

GQ rear is different.
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Post by Screwy »

GQ wrote:
Screwy_ScrewBall wrote:
Wendle wrote:you do realise that the standard steering won't work with the low pinion mq centre?

if it is for a custom application, go for it.
isnt the axle spline count different for MQ to GQ???
GQ front shares same spline count to the MQ

GQ rear is different.
That there is very good information to know ;)
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Post by giantracing »

i make lsd centres all the time for the front of GQ using some parts from MQ. the splines are the same
build em tuff, drive em ruff.........

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Post by Bishop »

cool thanks guys i wont be running the MQ centre just the ring gear and pinon i blew the rear diff so i changed the ratio to 4.6 and i had the mq with the same ratio so i thought it was worth a try ill let you know
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Post by MKPatrolGuy »

Bishop wrote:cool thanks guys i wont be running the MQ centre just the ring gear and pinon i blew the rear diff so i changed the ratio to 4.6 and i had the mq with the same ratio so i thought it was worth a try ill let you know
You can just use the ring and pinion because the GQ front is high pinion and the MQ rear is low pinion. The gears wont fit.
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Post by Ryan »

so does that mean MQ cvs and axles will fit the front of a GQ??
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Post by ozy1 »

no, MQ CV's and Axels will not fit a GQ,
as the spline count on the axels are different i believe, but the CVs seem to be the same size,
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Post by Screwy »

ozy1 wrote:no, MQ CV's and Axels will not fit a GQ,
as the spline count on the axels are different i believe, but the CVs seem to be the same size,

front centres are interchangeable as said above with abit of modding with the MQ rear centre.....

But as ive already told you before Ryan, MQ axle/CVs are no where near as wide for a start and wont fit anywhere near close to a GQ housing in length.....
The CVs in the bell themselves, are the same size and will fit in the hub but wont fit that end of the GQ axle and wont fit the GQ hub as the spline is different up that end.......
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Post by Screwy »

MKPatrolGuy wrote:
Bishop wrote:cool thanks guys i wont be running the MQ centre just the ring gear and pinon i blew the rear diff so i changed the ratio to 4.6 and i had the mq with the same ratio so i thought it was worth a try ill let you know
You can just use the ring and pinion because the GQ front is high pinion and the MQ rear is low pinion. The gears wont fit.
Other thing to keep in mind with this...

I believe the drive shaft bolt pattern and step into the pinion is different... between GQ shafts and MQ shafts, so i reckon youll need a moddified shaft with MQ shaft bolt pattern on the diff end....... :?:

Screwy
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Post by Ryan »

GQ wrote:
Screwy_ScrewBall wrote:
Wendle wrote:you do realise that the standard steering won't work with the low pinion mq centre?

if it is for a custom application, go for it.
isnt the axle spline count different for MQ to GQ???
GQ front shares same spline count to the MQ

GQ rear is different.


...... wouldnt that mean MQ fits GQ? length i can understand but im talking spline only
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Post by ozy1 »

GQ front, shares the same spline count to MQ rear only
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Post by Screwy »

Ryan wrote:
GQ wrote:
Screwy_ScrewBall wrote:
Wendle wrote:you do realise that the standard steering won't work with the low pinion mq centre?

if it is for a custom application, go for it.
isnt the axle spline count different for MQ to GQ???
GQ front shares same spline count to the MQ

GQ rear is different.


...... wouldnt that mean MQ fits GQ? length i can understand but im talking spline only
as shawn said, GQ front is the same as MQ rear only....

GQ front axles are different splines to MQ front axles and both the CV end and the axle/centre end...

screwy
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Post by Ryan »

ahhhhhhh it all makes sence now :armsup: lol
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...

Post by JemmyBubbles »

Just want some clarification...

So the rear R & P from the rear of a MQ will NOT fit onto a GQ front centre..

Other wise that would be good option get a genuine rear and scavange for cheap mq stuff...
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Re: ...

Post by Screwy »

JemmyBubbles wrote:Just want some clarification...

So the rear R & P from the rear of a MQ will NOT fit onto a GQ front centre..

Other wise that would be good option get a genuine rear and scavange for cheap mq stuff...
This is correct... as the GQ front is high pinion and MQ rear is Low pinion....

You can however swap the whole MQ rear centre into the GQ front housing and then do a MQ/GQ knuckle swap to get the tie rod to the front of the diff.

screwy
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Post by sideways »

just thought i would let you know you can but a reat MQ locker in the front
of a GQ you just need to index the holes the crownwheel bolts on to
a good enginerring company can do it it cost me a slab for a front locker
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