Outer Limits 4x4 Board

I want a set of rock crawler reduction gears for the transfer of my MQ Patrol.
Is there anyone on this size of jupiter that actually does these??
if not is there anywhere who can custom make them 1 off if the $$$ amount is right???

thanks for any info

screwy

hi screwy
Ive been through this myself and no-one does them. I spoke to liam at big balls off road and he said if i could get 10 firm orders and a spare transfer case ( for them to experement on) they may do it. apparently they could only get about 35% reduction due to lack of room in the transfer. also it would cost around $2000 each for the gears. Correct me please Liam if i'm wrong and you read this!

I was told that it couldn't be done because they are a chain driven transfer , that's why i run a cruiser transfer in mine with marks gears.

Bugger! I've often wondered about this,
Ive thought about a gq box and transfer and rear diff housing, which would put the tailshaft too close to my front gas tank (120litre tank under tray), and i'd lose my pto winch.
Maybe its possible to get another transfer case like an advance adaptors one and bolt upto a t700 auto??
Would cost a bit regardless.

Mq's are gear driven GQ/U are chain driven (and gears are available), was just looking at the gears 2 hours ago (leaky top cover).
Cruiser one sounds okay tho, how much work was involved? and is it on a 4 or 5 speed?

Patroler wrote:Cruiser one sounds okay tho, how much work was involved? and is it on a 4 or 5 speed?

It's actually on a C4 auto behind an injected 250 crossflow

Nice one! Sounds good

[quote="Patroler"]Mq's are gear driven GQ/U are chain driven (and gears are available), was just looking at the gears 2 hours ago (leaky top cover).

The chain only does the 'transfering bit ' --gears still do the reduction though in the GQ/GU Transfer case.

Nick

The chain only does the 'transfering bit ' --gears still do the reduction though in the GQ/GU Transfer case.

Yea thats right, hence being able to get reduction gears for gq/u, the chain only comes into play to drive the front tailshaft as it is offset.

The gears i was just looking at are on an mq t130a transfer, and thaks to a 50mm body lift i could remove the top cover and replace its gasket without removing the whole shebang. In doing so i stuck a mirror over the open transfer case an had a perve on the gears

so if MQ transfers are no good for rockcrawling gears then wat options can i explore?

I currently am using a standard MQ 4 speed behind a holden 308 V8 and the box is definatly on its last legs.
I am in negotiations for a 5 speed and will with any luck pick it up shortly ( depending on the $$$ situation ) and before i go and put the 5 speed in i want to put rockcrawling gears in.

I know its not possible to fit a GQ transfer, and if it is ( through various adapters ) the driveshaft will come out the centre rather than the drivers side and if i take another step and put a GQ rear dif in im gonna have to convert everything on the diff to leave of the car to coil and the track width on the front will be wider on the rear than the front so that means the front needs a GQ diff. Not interested in buying a GQ so y would i spend more than they are worth to convert an MQ?

So in saying that, wat transfer cases can be put on the back of a standard MQ 4/5 speed box in place of the standard transfer case that are offset the correct amount to the driversside???
are there kits to adapt the cases? has anyone explored this step??

cheers guys

screwy

I couldn't find any simple solution when i looked in to it Why not go TH400 auto with landcruiser transfer, that way you can go Marks crawler gears,and the offset for the diffs is the same. Just a thought.

Personally I havent heard of anything to do what youre asking...

Just looked at the advance adaptors site and their atlas t/case is for centre rear diffs
I've got a chev in my car which is why i said t700 (easy to put on back of chev) that would also give a 30% overdrive.
So probably I would look at what shortymq has done, except with a t700, or maybe run a 3 speed auto if i could get taller high range t/case gears.
As for a manual box, I haven't looked that much, but the obvious choice would be a landcruiser 5spd and t/case? That may be getting a bit toyota like though
Interested to see how you go with this.

Mick

auto = poo

not gonna happen. I want absolute full control over my rig at all times. its an old rig and was never made with an auto and will never get one.
I will not put in and computers of sensors or automatic anything into my rig. I want full control over everything. About as far as ill go is a petrol motor with a dizzy. Everything else is on manuel override switches.

im not feeling lazy enough in my youth to go to an auto nor to i have the dosh to even let it cross my thought patturn for more than a sec.

Im after a solution to mate the 4/5 speed manuel to a transfer with readily made rockcrawler gears...

thanks for the suggestion, besides id feel like i stole ur idea........

screwy

Good luck with it, Keep us posted if you come up with anything

nah definatly dont want to run an auto box, and if i can help it i want to run the standard box, just a different transfer case.
i might do a bit of digging and c wat i can come up with

I am pretty sure the CabStar tranny has a lower first than the 4-5spd....not giving you crawler gears in the transfer but will give a lower low end. Might be an option as I know getting anyone to make 10 set's of gears at $2k each is just not going to happen. I would sign up for a set too but it will never happen. I think Dellow has an adaptor for using the cabsat with a v8 too. Drop you diff ratios and it may be the next best thing to crawler gears in the t-case.

my 2 cents

yeh, definatly need to do some digging around on this. Ill let ya know how i go.

screwy

look into the possibility of adapting to a rangie t/case. they are around 3.xx:1, have a drivers side rear output, small, light, pretty strong (i think) have a handbrake hanging off them..

thanks wendle. Ill make a coupla phone calls today and find out who if anyone makes anything that i can adapt the different T-case to.

screwy

Ive done a little bit more research and apparently the IZUZU Dyna gear box will fit, and marks makes a kit for it.
Has anyone heard of this before? and does anyone make gears fo such a box?

also the cabstar 5 speed, exactly wat sort of box is this and are gears available?

screwy

also the cabstar 5 speed, exactly wat sort of box is this and are gears available?

we talked about the cabstar recently on here....

It is out of a big Nissan truck, forward cab, around 2.5 ton. This is a large truck tranny and very buff built in the Nissan truck factory same as some of the Patrol trannies. No transfer case as it comes from a 2wd truck but as I understand a simple adaptor and the MQ/MK transfer bolt's right to it. Size wise I think it is close to the MK 5 spd. Dellow makes kit's to bolt v8's, 6.2/6.5L GM diesel and the like to the cabstar 5spd. I am going to use it in my MQ build up. 1st is pretty low in it, can't recall the exact gearing but it is a touch lower than the MK 5spd.

rightio, got ya.
So it takes the MQ transfer as well which is no good to me.
Anyone know anything about this Izuzu Dyna gear box?

screwy

so whats the go screwy with the 10 people to get them done... count me in i need reduction 4 my buggy

There is no point in it. I have spoken to bigballs offroad.

They say that if i give em a transfer to play with and $10,000 they will make me up 5 sets at $2000 a pop.
I would be prepared to do this if i got another 4 ppl, BUT..........

They reckon the biggest reduction they can do on an MQ transfer is 35%. This isnt worth it for the money. They reckon that MQ transfers are too small for the gaering.
35% is crap all when for less than that about of dough u can get 185% reduction in other models...........

screwy

this is a very old post but i was wondering if any lights been shed on this issue

ive built 2 whole trucks since then....

cannot get reduction for MQ transfercases.

i actually put a complete GQ gearbox and transfer in my old truck to get rockhoppers to drive the 39s...

PM me if you want more info.

screwy

just found this topic randomly... would it be possible to bolt up a straight thru tranfer to the gbox, then stick the standard mq tranny to the back of that? thus still retaining the offset, albeit with very different driveshaft lengths....

i had a brain fart the other week and was thinking about a small planetery (sp) gear box, like what you sead, between the gear box and transfer, kinda like the way most auto's are set up. lock them up for 1 to 1 and open for 3 to 1 gear ratio, but i think im just dreaming . ive also been toying with idea of bolting a datsun 720 transfer case off the back the shorty transfer case. if bolted flange to flange its 10inches longer, it will only give a 5-6in tail shaft drop, but if you tilt the motor and box over a little you could fix some of the clearence problems.

sorry if all that doesnt make sense ive had a few

I think the duel transfer case would work using the divorced behind the standard.

But it wouldn't work to well in a SWB. In an LWB I think it would be much easier and more doable.

Yeah good luck doin it in a swb. The rear shaft is short enough as it is without adding another transfer in there. Whats the diff between G60 transfers and MQ/MKs? Heard someone talkin about big reductions in a G60 box the other day...