Outer Limits 4x4 Board

Hi i am building a jeep rocsta to tackle tough truck next year.

Is there any off the shelf kits that will help me bolt up some dual tyred dana 70s i believe my stock diffs are 60s so i need to upgrade to a stronger diff and hear the 70s are the go.

I was thinking about joining a stock TJ wrangler transfer to a jk rubi transfer with a stak or atlas behind that do you reccoment the stak or atlas as a better choice?

I am looking at converting coils to leaf springs as i think it will be better for a tough truck style comp rig what do you think?

I managed to pick up some awesome bride racing seats from japan and a momo wheel for the interior so thats covered.

On the 70s can i run 4 40inch boggers on each axle safely or do i need to go bigger.

This is my first project 4wd so any advice would be appreciated.

Are you for real? Or just trying to stir up sheet?
If you are for real, I suggest you do a LOT more research as most of what you have asked simply does not make sense or is incorrect.

I have been researching for many months now and have spoken to an expert named colin about it who was telling me about the diffs and transfer case options.

I have not looked at the suspension much yet just pics of lots of top trucks in united states running leaf springs.

Is it the leaf springs you say are not good option? as other ideas are from jeep expert as advised on forums.

big_slart wrote:Hi i am building a jeep rocsta to tackle tough truck next year.


I was thinking about joining a stock TJ wrangler transfer to a jk rubi transfer with a stak or atlas behind that do you reccoment the stak or atlas as a better choice?

HOLY LONG DRIVELINE BATMAN

It will be a fully hektic and sick jeep rocsta with 4 40inch boggers on each Dana 70 axle.....

Maybe eight 60 series leafs on each side with some 9 inch shackles..

I'd fit an atlas and a stak, just to be sure.

OIIIO wrote:It will be a fully hektic and sick jeep rocsta with 4 40inch boggers on each Dana 70 axle.....

Maybe eight 60 series leafs on each side with some 9 inch shackles..

I'd fit an atlas and a stak, just to be sure.

I will investigate the 60 series leafs to decide if best option, will 8 be enough to hold big weight of diff and tyre and reinforced bidy of my jeep?

Is there any reccomended off shelf shackle suggestion to mount these leafs to truck.

For something like this you'd definately want revolver shackles allround. For really sick flex you could mount the front & rear of the leaf pack

big_slart wrote:On the 70s can i run 4 40inch boggers on each axle safely or do i need to go bigger.

Stuff the 70's go the MF Gearbox and rear axle. Heaps stronger and will definitely hold up to all the punishment the Rocsta can put out.



And it's already TWIN STICK!!

bahahahahahaha

you should see my smile

maybe you should drop an ls7 in there just to be sure you can push those 44's and why not add a few turbo's aswel..

would be a good idea to put one of them turbo whistles on your exhaust aswell, ive heard they put an instant 10hp on your car if you plus all that and a transformers badge then you'd easily be pulling 2000hp+

fooly siick

This sounds awsome, can you post some before and after pics for your Brother Jeepers?
I will watch this with interest!

The LS9 would probably work well. Lots of bottom end. 6.2 litre supercharged from the factory making about 640hp before tweaking. That'll spin up the 44's.



Back it with an AWD 6L90E



Piss off the AWD transfer and replace it with an Atlas 10.34:1. Thats gets rid of the multitransfers



I would run this axle - of course with ends on it. I think it may be out of a John Deere Gator.



And then I would run the biggest uni joints in the propshafts that I could find.

What brand are those unis and will they fit a Dana 44?

I was hoping with the torque reduction of the mated transfers i would be able to use the stock engine.

If that didnt work i have done some measurements and could squeeze in a rover 3.5 v8 all alloy so nice and light.

big_slart wrote:I managed to pick up some awesome bride racing seats from japan and a momo wheel for the interior so thats covered.

No way, a momo steering wheel. Shouldn't need harnesess then and don't qoute me but you may also not have to wear a helmet to compete either.

itchy666 wrote:What brand are those unis and will they fit a Dana 44?

I think its a SCA one. These ones are made out of high quality mild steel unlike other cheaper uni joints that are made from chrome vanadium and the likes.

big_slart wrote:I was hoping with the torque reduction of the mated transfers i would be able to use the stock engine.

If that didnt work i have done some measurements and could squeeze in a rover 3.5 v8 all alloy so nice and light.

I don't think the stock motor would have enough power to turn all of those gearboxs, let alone turn the tyres on the end of them.

Will it cost shitloads?

This build will be epic with the addition of a transformers badge !!!, as said b4 2000hp from the install !!

Having fun Trav?

..........

skotup wrote:Dude, defs go the jeep patriot suspension and drive line for that sex on wheels, anything else would be a crime, and i mean a real crime, not like that rock spider crime.

Touche'

Yom i have set myself a budget of $30k for the build.

Im not sure if the transformers comments are taking the piss but i was never a fan of the badges, but have been considering an optimus prime style paintjob for the cab.

After more research I am seriously looking at the rover v8 or a 20b turbo I will speak to collin today and my engine builder about this to see what is the best option.

Last night I was looking at tyres and am thinking of not going boggers as there will probably be very little mud driving and may possibly go some sticky treps.

I sent off a request to walker evans last night to enquire about getting some custom rims to suit the twin tyre arrangement on the rear 70, but looks like I cant get a twin tyres 70 steering axle so may stick with the stock 60 and toughen it up a bit it has been suggested solid are the people to talk to about this upgrade.

Cant wait to get this build happening and start buying some parts.

Good work big_slart. With the scope of your mods you should definately get in contact with the MGOC. I'm sure it will be right up there back alley way. They realy are the wheeling revolution in this jeep thing, even have thier own language.

big_slart wrote: it has been suggested solid are the people to talk to about this upgrade.

Yes, SOLID are the people to talk to..

Danny Milton is awsome and honest, he builds the best diffs and has fantastic customer service skills. Quality built diffs and always delivered on time, Danny is always available to help with any problems.

Tell him Wayne sent ya

p.s. you need some teal slacks......

also try tony whitehead at usa4x4 he is selling 37 inch treps for $400 each atm and 40 inch treps for $450 atm and also had swampers for 30 percent off atm .

he also sells dana diffs and atlas boxes too

I think the one thing everyone is forgetting is the steering options for twin swampers.

I put my vote down to scratch the silly hydro steering and rear steer everyone is using and go with skid steer like a bobcat.

jimmyb wrote:I think the one thing everyone is forgetting is the steering options for twin swampers.

I put my vote down to scratch the silly hydro steering and rear steer everyone is using and go with skid steer like a bobcat.

good idea you can run 2 rear diffs saving you money and you'll get the twin tyres your after

How does a skidsteer work JimmyB is it practical for a sometimes road vehicle?

Slunnie wrote:The LS9 would probably work well. Lots of bottom end. 6.2 litre supercharged from the factory making about 640hp before tweaking. That'll spin up the 44's.



Back it with an AWD 6L90E



Piss off the AWD transfer and replace it with an Atlas 10.34:1. Thats gets rid of the multitransfers



I would run this axle - of course with ends on it. I think it may be out of a John Deere Gator.



And then I would run the biggest uni joints in the propshafts that I could find.

I love those quick change uni joints, also dump the fuel injection crap and just fit tripple webbers and a 13B cam to the LS9, and if you are experiencing problems with burning the valves I'd run red slurpee injection. All the serious rigs nowdays are running 10 speed Shimano derailer transfer cases and unlimited slip diffs and dually 9.00x16's