Cruiser diff into MQ Patrol

Post by **pongo** » Wed Apr 30, 2008 8:11 pm

The reason being for the 4.1 ratio. the best i can get is 4.3 and do alot of hway kays.

Both are off set diffs, so may be okay.

Wheel bolt pattern is the same

what about:

Tail shaft bolts ?
Brakes lines, etc ?
spring widths ?
track widths ?

Any one done it before ?
any one want to donate a rear diff cheap?

Who feels like getting out the tape measure ?

May work the other way too, as a MQ patrol diffs are 4.3 or 4.6 std and are cheap as chips.

Post by **udm** » Wed Apr 30, 2008 9:29 pm

hey pongo, ive got a rear diff off the cruiser (for sale btw) that you can use to take measurements if you want.

Post by **macca81** » Wed Apr 30, 2008 9:44 pm

i forget where, but i think i read somewhere that someone put 60 diffs under an MQ as a straight swap... from what i gathered there was no need for any mods, but then, dont quote me on saying that...

Post by **jet-6** » Wed Apr 30, 2008 9:58 pm

Ill have a set of spare 4.1 patrol gears mid next month, if thats will save some hassles?

Post by **chimpboy** » Wed Apr 30, 2008 10:57 pm

I thought patrol had a wider track by a bit, but I could be wrong.

Are 4.1 patrol diffs actually rare? In a GQ they are as common as mud, anyway.

Post by **cloughy** » Wed Apr 30, 2008 11:34 pm

Why not just put a 4.1 GQ H233 centre in the rear?

Post by **pigletracing** » Thu May 01, 2008 6:27 am

2nd the GQ diff idea,but MQ also came out with 4.8's aswell,
if you are handy with a welder, why not just add spring saddles to
your existing mq difs some trailing arms & a panhard rod,you could
get all existing arms & rods off factory junk at any wrecka,then tak in the brackets.

Post by **benhl** » Thu May 01, 2008 3:07 pm

I can go 1 up on jet-6... I'll have a set of GU 3.9 CW&P gears for sale prior to tax time

Post by **pongo** » Thu May 01, 2008 3:57 pm

sorry guys , its a MQ/MK patrol. looking at easiest and cheapest way to get some more legs.

May look into the GQ gears if the cruiser idea falls through.

Post by **nastytroll** » Thu May 01, 2008 4:13 pm

I through out 4.11 diffs for an mq awhile ago, came from a P40 engine patrol van.

Post by **badger** » Thu May 01, 2008 6:55 pm

leaf sprung gq diffs bolt straight in steering and all
and a gq cw&p will fit the small rear diff or run a h260 with gq gears.
people almost throw away both of these parts

Post by **pongo** » Thu May 01, 2008 7:51 pm

badger wrote:leaf sprung gq diffs bolt straight in steering and all
and a gq cw&p will fit the small rear diff or run a h260 with gq gears.
people almost throw away both of these parts

ahh k, So I can just replace the CW&P from a pretty mush common GQ Front ( ?) into the rear and keep spiders and LSD, etc. and will be sweet.

What can we do for the front. Although, cant remeber the last time i locked the hubs in

A bit confused atm with diff models, been a long week and screaming kids arent helping

Post by **pongo** » Thu May 01, 2008 8:05 pm

searched a bit more

Screwy wrote:in a nut shell.......

MQ/MK rear diffs have the same spine counts as the GQ fronts do.
The mq and GQ rears and gq fronts are the same physical size but different spline counts between rears...

so basically,
You can bolt a gq front centre into a rear mq housing/axles and you can bolt a MQ rear centre into the front GQ housing/axle/CVs
But an MQ rear centre is not interchangeable in GQ rear housings.... or visa versa.....
rear to rear is a no go due to axle splines. you cant change the axles over because gq diffs are wider....
mq fronts are a completely different diff.

if you change the mq rear into a gq front you need to do a knuckle swap to bring the tie rod to the front of the diff instead of the back as gq fronts are high pinion and mq rears are low pinion....

also the gqs only have 4.1s, most mqs have 4.6s so you will need to ensure correct ratio changes.

screwy

http://www.outerlimits4x4.com/ftopic116657.php.

I think i know of a gq front diff sitting round for a trial fit into a spare MQ housing i have here

Looking like i may be able to find a 4.1 match for the front out of a 720

http://www.outerlimits4x4.com/viewtopic ... 85ea1a51cd

Post by **Rosey55** » Fri May 02, 2008 12:45 pm

i'm confused, why don't you just use 4.1 ratios from a MK patrol, they're cheap as chips now days, it'd have to be easier if your really set on getting 4.1 ratios. Personally i'd keep the 4.3's and accept a little less top speed

Post by **WICKED** » Fri May 02, 2008 1:33 pm

Pongo,

I've got those diffs (MQ/MK 4.3,4.6 and LC 60 4.1) for sale.

I'm putting GQ leaf diff in my MQ. there is a thread in here about it some where. EDIT - its the same thread that screwy is quoted in...

Pongo call me if your confused and I'll try and confuse you a little more....

Post by **84mksd33t** » Fri May 02, 2008 4:37 pm

did u manage to sort out the 4.6 centres for me wicked? (landy from patrol4x4)

cheers

Post by **WICKED** » Fri May 02, 2008 4:40 pm

84mksd33t wrote:did u manage to sort out the 4.6 centres for me wicked? (landy from patrol4x4)

cheers

Haven't even looked into it.

Post by **adds** » Fri May 02, 2008 9:16 pm

Ive got an mq rear diff and its got arb lockers in it does any1 no if they will fit in the front diff off my gq and its got 4.6 gears

Post by **pongo** » Sat May 03, 2008 4:23 pm

84mksd33t wrote:did u manage to sort out the 4.6 centres for me wicked? (landy from patrol4x4)

cheers

do you have any 4.1 gears. maybe swap, lol

Post by **dattopimp** » Sat May 03, 2008 6:24 pm

I was thinkin of puttin GQ front diff under mine but aren't they a wider track? if they are they shouldn't bolt straight in. Plus the Mq has a wider chassis so wouldn't the springs not line up? I mainly want a GQ front for extra track width...and the cv's

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Cruiser diff into MQ Patrol

Cruiser diff into MQ Patrol

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