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MQ rear diff into GQ front

Posted: Wed Oct 12, 2005 8:16 pm
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

Posted: Thu Oct 13, 2005 7:09 am
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.

Posted: Thu Oct 13, 2005 7:12 am
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.

Posted: Thu Oct 13, 2005 6:33 pm
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???

Posted: Thu Oct 13, 2005 6:51 pm
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.

Posted: Thu Oct 13, 2005 6:55 pm
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 ;)

Posted: Thu Oct 13, 2005 7:00 pm
by giantracing
i make lsd centres all the time for the front of GQ using some parts from MQ. the splines are the same

Posted: Thu Oct 13, 2005 7:39 pm
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

Posted: Fri Oct 14, 2005 12:39 pm
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.

Posted: Sun Oct 16, 2005 6:30 pm
by Ryan
so does that mean MQ cvs and axles will fit the front of a GQ??

Posted: Sun Oct 16, 2005 8:55 pm
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,

Posted: Mon Oct 17, 2005 7:07 am
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.......

Posted: Mon Oct 17, 2005 7:12 am
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

Posted: Mon Oct 17, 2005 5:33 pm
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

Posted: Mon Oct 17, 2005 5:39 pm
by ozy1
GQ front, shares the same spline count to MQ rear only

Posted: Mon Oct 17, 2005 6:25 pm
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

Posted: Mon Oct 17, 2005 9:50 pm
by Ryan
ahhhhhhh it all makes sence now :armsup: lol

...

Posted: Tue Oct 18, 2005 3:43 pm
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...

Re: ...

Posted: Tue Oct 18, 2005 5:16 pm
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

Posted: Tue Oct 18, 2005 7:01 pm
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