hi guys, i would really love some help or feedback on our new offroad comp rig. Currently we run a 91lux, which is more a dedicated all-terrain/rock rig. and we have done exceptionally well with it over the years. But we have always had a passion for the high speed stuff. In australia we do have quite a few 'winch challenge' events which are becoming more speed orientated. We have always prided ourselves on staying a few steps ahead of the competition, although we have a meagre budget we do have the knowledge and facilties to construct whatever is necessary or required. So after cracking it and parting out our moonbuggy, we kept a few good bits and this is what we plan on:

New Hilux comp rig - H2
The criteria -
Hilux gen 3, lightweight!! and a lot of horsepower!!

The Goals -
Lightweight, highspeed, reliable, allrounder!

The events -
Tufftruck09+, winch challenge series, OBC?, allterrain and rockcrawling.

The Format -
Hilux gen3, ute - single cab, 4link rear (pre-runner style), radius arm front, coils F&R.


Parts so far -
Toyota 2ZJ-GTE TWIN TURBO!! + A340F AUTO
ATLAS 5:1 tcase w/ 1350hd yokes
REAR DIFF -TrailGear High clearance rear diff housing. w/ chromoly rear axles, 4.11 YUKON gearset chryo treated, ARB airlocker.
FRONT DIFF - Std 60series front housing, shaved / plated / knucles rotated / trussed. Trail Gear SIX SHOOTER HUBS and steering arms, SUPERIOR ENGINEERING Chromoly tie rods and draglink, chromoly 30 spline Longfield CV's & chromoly drive flanges, 4.11 YUKON gearset chryo treated, ARB airlocker.
TrailGear 12" travel HD slip shafts with TG HD CREEPER u-joints.
Tires - 37" MAXXIS TREPADORES - comp spec, 39" BFG RED LABEL KRAWLERS - comp spec.
Kirkey race seat, hydraulic diverter system, Uprated hi-flo power steer setup.
TMAX 3 motor winch,4 port NOS fogger kit.


Parts to get -(shopping list)
A340 TO ATLAS adapter.
Hilux chassis to chop up! and Gen3 lux body shell, cheap chinese gaurds and doors (so much lighter than OE)
4 lengths of chromoly tube for the cage and exo!! 3 or 4mm 6061 alum plate for the roof, 5mm SCR12 for the skid plate
2 leeceNeville 160Amp 24v alternators, 2 1000CCA cat batteries, 8 x 200amp solenoids.

4 x 18" remote res FOA coilovers. 4 x 4" FOA air bumps (bypasses will come next season)

Superior Engineering Fabricated front and rear chromoly links (twin chromo tube w/ plated truss sections and mounts for shocks and adjustable blade type sway bar system)


So how does this sound, for a platform??

any hints or ideas are greatly appreciated!

comp wise the winch challenge stuff requires you to drag your sorry butt up or over any hill or obstacle, which is really new to us as we like to DRIVE IT! Currently we run the 37" MAXXIS trapadores in 762 compound, would these work better for climbing in a CUT state, say remove every second side lug to open them up! sort of like the crazy european 4wd guys? The big comps in OZ have a lot of mud and sand, but still a little rock, so a Bogger type tyre may help?

Sounds like a beast.:D Is Warren at 4WDBits working with you on it?

Sounds like a beast.:D Is Warren at 4WDBits working with you on it?

Jason and the boys at LOCKTUP4x4 has been helping us heaps. he has just sent our first 2 18's and 2 air bumps. we can't wait to get stuck into this truck.

Greg i honostly think you are dreaming that any 8" Mini Truck(hilux) rear centre will hold up to that much horsepower or abuse.

As for the rear, I'd get a locked H260 out of a Patrol ute under there.

As for the rear, I'd get a locked H260 out of a Patrol ute under there.

A standard H233 would do the job with better clearance, and if you want more beef go a clearanced 14bolt over the h260!

I look forward to seeing your progress guys.

the reason why we are going to try the 8" toy first is cus, we have a shiny new TrailGear housing sitting on the bench, as well as an ARB and full spooled centers,both with new chryo'ed 4.1 yukons and a set of chromo axles.

And as for using nissan stuff, so far i would try and steer clear of that. we have braken soooo many axles in micks GQ and he has less power. We have GQ and GU diffs here ATM but are still doubtfull on there axle strength.

Sean is right, we have spoken and would definately go the 14bolt when we need an upgrade. or if need be convert an 80 series.

the reason why we are going to try the 8" toy first is cus, we have a shiny new TrailGear housing sitting on the bench, as well as an ARB and full spooled centers,both with new chryo'ed 4.1 yukons and a set of chromo axles.

And as for using nissan stuff, so far i would try and steer clear of that. we have braken soooo many axles in micks GQ and he has less power. We have GQ and GU diffs here ATM but are still doubtfull on there axle strength.

Sean is right, we have spoken and would definately go the 14bolt when we need an upgrade. or if need be convert an 80 series.

You could consider the D60/GQH233 hybrid I work on with Dan from ARB (engineer). This was a D60 course 33spline with a 35.8mm diameter, not quite a D60 35spline with 38mm dia but a fair bit stronger than the standard alxe. I think the torque spec were reasonable around 10,000 using a reasonable quality cromo axle. This would work well in a truck like this but probably not enought for a heavy truck or one running larger than 40in tyres!

The R&P (9.25in) would hold up just not the standard axle, so for strenght and clearance it would most likely be better than a 9in when you take the low 9in pinion into account (plus the price).

Still not a clearanced 14bolt tho! and it would most likely cost more.

You could consider the D60/GQH233 hybrid I work on with Dan from ARB (engineer). This was a D60 course 33spline with a 35.8mm diameter, not quite a D60 35spline with 38mm dia but a fair bit stronger than the standard alxe. I think the torque spec were reasonable around 10,000 using a reasonable quality cromo axle. This would work well in a truck like this but probably not enought for a heavy truck or one running larger than 40in tyres!

The R&P (9.25in) would hold up just not the standard axle, so for strenght and clearance it would most likely be better than a 9in when you take the low 9in pinion into account (plus the price).

Still not a clearanced 14bolt tho! and it would most likely cost more.

i gather you are playing with this cus there is a market for better nissan axles??

The axles we have are rated ~8800lbs. so at worst case i might do a 80series with lux axles!

Its easier to bore out a toyota center as the bearing ID is much larger (~35.8mm untouched hemisphere ID) - so opening it to 38.5/39mm is no big problem. whereas nissan is barely 34mm!
Dont toys use a 50mm ID is bearing? so even at 40mm ID bore you have a good 5mm wall thickness.

I have done a 9" ctr section conversion on a cruiser before, so its also an option....

The rating for the 35.8mm axle was in Nm not lbs, using the same rating the toyo axle was 3200 from memory, and the standard gq was less. The GQ hybrid centre was using the new 100 series toyo bearing, you could try for more axle dia but it will most likely weaken the journel too much.

Beside you guys drive too well and arnt hard on your gear so I imagine you will be fine with the lux centres.

What wheelbase are you considering and what would the front and rear overhangs be like? I am not farmilar with the coilovers you are using where and who makes them?

I am not farmilar with the coilovers you are using where and who makes them?

www.F-O-A.com -Made in USA

We have a couple stocking dealers in Aus. Warren at 4wdbits has a location in NZ and Aus...both fully stocked with product and service parts. http://www.4wdbits.co.nz/ProductsList.aspx?CategoryID=51&selection=18

http://img.villagephotos.com/p/2003-7/269162/KZSIS-FOApics042.jpg
http://img.villagephotos.com/p/2003-7/269162/dougs3.JPG

Greg what sort of final weight are you guys hoping for? Do you plan on pushing the motor through the firewall?

The rating for the 35.8mm axle was in Nm not lbs, using the same rating the toyo axle was 3200 from memory, and the standard gq was less. The GQ hybrid centre was using the new 100 series toyo bearing, you could try for more axle dia but it will most likely weaken the journel too much.

Beside you guys drive too well and arnt hard on your gear so I imagine you will be fine with the lux centres.

What wheelbase are you considering and what would the front and rear overhangs be like? I am not farmilar with the coilovers you are using where and who makes them?

the specs on the axles we have are 8300ft/lb (=11253Nm) breaking strain @ 120degrees twist, and have a lifetime warranty. So i am thinking maybe an 80 series with lux tubes might be a good option.

as for overall weight, if we can keep it at approx 1800kgs we will be well in front, as our main competition is the nissans which are around 2300-2800kg and they have very similar power figures. So overall power to weight will be a big advantage.

The build up will start with the WB of ~120" and then the motor will be sat behind the front diff so it will JUST clear on full compression. Front diff will be far enough forward to clear the 39" krawlers if we need to run them in allterrain style comps.

Our FOA's are in the air ATM so we should have them mid next week. I will pick up the new body and chassis next monday, then we can get cracking!

how long will your front radius arms be????

Serg