perenti 6x6 with a supercharged 454!!!!

[andrew e]

No im not kidding. Anyone read LRO lately? there are picks of this beast built by starr motorsport to do burnout demos and stuff for an army recruitment drive. looks pretty cool but i dont have a scanner.

specks here

http://www.summernats.com.au/pdfs/teamarmy.pdf

and picks here

http://starrperformance.com.au/index.ph ... 76968-0580

Andrew

[mopar rangie]

sic mate sic.now where are those 6 Simex.

[Loanrangie]

That is the most hideous landy i have ever seen.

[uninformed]

is it just me, or when you clic on the pic " mid axle" it actually a pic of the front axle, hence swivel balls. the front 3 link goes to the FRONT of the vehicle, ie the two lower and triangle upper meet the chassis infrront of the axle up under the bumper??????

cheers, Serg

i wonder where all the land rover hardware went.

front rover axles from 6x6 are much stronger than any civy spec, even in 4.7 ratio

rear sals are also stronger than civy spec.

what fun, pretty cool build but what a waste of a good landy


serg

[v840]

Aesthetics aside, you have to appreciate the engineering put into that thing. I say good on em for doing it differently. Needs to lose those bling rims and get some 44 tsls though. That would be a real burnout show!

[andrew e]

Needs to lose those bling rims and get some 44 tsls though.

they'd touch!

[ISUZUROVER]

One word - Ugly.

And why a Nissan diff??? A salisbury with 35 spline alloy axles would be stronger, and the perentie has 2 of them already fitted.

The front diff is the only front-specific and coiller specific 4.7 that LR ever made - but still not as strong as a decent hypoid diff. And it costs $1700 for one ring and pinion from rover!!!

[v840]

Needs to lose those bling rims and get some 44 tsls though.

they'd touch!

Yeah but imagine the burnouts

[1tonsoup]

Forgive me if it has been asked before, but what is different about the Perentie 4.7 R&P in order to make it stronger. Tooth count, material?????

Seamus.

[Gordo]

saw this thing at the nats pre-blower and bling rims.

Still had the g@y bling grader blade on front and a bonnet with a pretty cool airbrushed infantry dude - pity they lost that with the blower.

Agreed in real life it's as butt-ugly and non-landy drivetrained as you can get.

Their next proj should be 6x6 on mogs

[F'n_Rover]

1tonsoup wrote :

Forgive me if it has been asked before, but what is different about the Perentie 4.7 R&P in order to make it stronger. Tooth count, material?????

Also, i want to add to this and ask does any one know if the late S111 Aus mil landies had better r&p fitted.
rumour (internuts) is they were made from better steel.

[ISUZUROVER]

Forgive me if it has been asked before, but what is different about the Perentie 4.7 R&P in order to make it stronger. Tooth count, material?????

Seamus.

AFAIK the tooth count is the same. The main reason it is stronger is it is made from better material and made to be front specific (either lapped to be front specific or reverse cut - i.e. a normal r&p runs on the weak side of the teeth in a front aplication). So it wouldn't be as strong in a rear application. It is also made to fit the coiler centre only, so that means the ring gear is a lot thicker than a series 4.7 so is probably subkect to less deflection under load.

I have heard that the late military R&P's were stronger too, but I don't know if it is true. I broke a civillian series 4.7 in the front of my IIA fairly easily a few years ago. After that I fitted an old military centre I had that is very worn and has no pinion preload - I have given it a hard time for the last few years (until I went OS) and it held up fine.

[uninformed]

the 6x6 front axle has " reinforced axle casing, a heavy duty four pinion differential and high strength axle shafts with involute splines at inboard and outboard ends"

cheers, Serg

so no one has looked at the pic that looks like the front axle has LEADING arms/links???????????

[ISUZUROVER]

the 6x6 front axle has " reinforced axle casing, a heavy duty four pinion differential and high strength axle shafts with involute splines at inboard and outboard ends"

cheers, Serg

so no one has looked at the pic that looks like the front axle has LEADING arms/links???????????

Yep it has all that in addition to the special 4.7 ring and pinion. The 4-pin diff was a factory option, the "high strength" axle shafts are just 24 spline each end (all rover axle splines except the 10 spline are involute form), and the reinforced axle casing is laminated (tubed) internally AFAIK.

I have seen the leading arm/link setup a few times (even on jeeps designed to go offroad!!!). For their application it is fine because they don't care about wheel travel, just predictable front end movement.

[turps]

I seen the lads practice and break it today.

The only LR thing about it is the chassi (cut of and replaced from behind cab) and the body. The rest is built or modded from somewhere else.
Engine 427small block with Starperformance blower kit (engine about $46000).
2 speed powerglide (think thats what it calles)
Nissan transfercases. This is an interesting bit of work. They have adapted to TX cases togther. This makes it so they can have 2 rear outputs. They have mounted on of the front outputs backwards which goes to the middle axle.
All axles are GU with arbs in each one (they said these where stronger than sals).
The susp work I think needs some more work. Cant remember what the front was but yes users leading arms.
Both rears are setup with to lower links and an 'A' frame upper. I dont think the design is worng. Just lacks strength.
The 'A' frame uses rose joints. I can understand using them on the axle. But at the chassi they donothing. Anyway it didnt fail there, it failed atthe axle end. There was no bracing across the weld and it just broke. Think it was due to students driving not keeping the revs up and the wheels slowed down enough and gripped (was dry concrete). Sort of shocking the system.
Also has coil overs on each corner which provide heaps of wheel travel. All 7mm. It gets more flex out of the chassi.
Has a cool brakeing system. They can disable certain wheels from the braking system which gives them a number of burnout options. ie just left, right or staggered.
For today they wherent using the front as they still had the bling 24" rims on (these rims come in a 26" for those interested). For burnouts they use 16" chrome steelies with hankooks.


I asked heaps of questions and they answered most. The guys running the show seem real cool. And where happy to chat.
Tried talking them into a rockrig.
So if there was anything else just ask it may jog my memory.

Got some piccys, so will post them when I get them off my mates camera.

As for burn outs I think it will be very cool. Before it broke the rear susp. They had it doing fig 8's looked very cool smoking the 4 rear wheels.

[Davidh]

Not bagging the idea, it's a pretty cool truck.
But how does our government and army justify spending the money on this thing?
$46000 engine! I'm sure there's plenty of other things the army could do with that sort of money.

[turps]

Its part of a recruiting thing to get more apprentices. As they are struggling to meet requirments with the amount they have now. So this is probably sorta coming out of there budget.
Also thats what the engine is worth. I bet they didnt pay anywhere near that much for it.

[ISUZUROVER]

Its part of a recruiting thing to get more apprentices. As they are struggling to meet requirments with the amount they have now. So this is probably sorta coming out of there budget.
Also thats what the engine is worth. I bet they didnt pay anywhere near that much for it.

Yes but it is funny that it isn't built by army tradespeople but by an external shop...

And the army usually pays more than the value for things, not less. e.g. the perenties cost about $100000 per vehicle new (low volume special military model), and every couple of years they pay repco $8500 per engine to pull the engines out and bench dyno them for a day.

[weeds]

Hey Ben

The ARMY gets the odd engine rebuilt through Repco for approx $8500, there is no program of pulling the engines out and putting them on a dyno for a day. I would be suprised if many of the engines have hit the 100000km mark.

When i was on the bushmaster trial we modded two 6x6 GMV's so that they could keep up with the trial vehicles. We increased the exhaust size, removed the inner air filter and had the car tuned on dyno. It nearly turn a slug into a race car, the mods were knocked on the head by L/R.

[ISUZUROVER]

The ARMY gets the odd engine rebuilt through Repco for approx $8500, there is no program of pulling the engines out and putting them on a dyno for a day. I would be suprised if many of the engines have hit the 100000km mark.

Hi Kelvin,

A mate I used to go riding with in Brisbane was a diesel fitter for Repco. He was the one who told me about the dyno testing.

Maybe he was wrong about the fact that it happens to al the vehicles every few years (maybe it was only where a rebuild was thought to be needed), but what he told me was...

The perenties are sent to a mechanical workshop where the engines were pulled out and sent to him (at REPCO). The engines were then dynoed for a full day, and if they were within specs they were sent back to the mechanical workshop to be reinstalled. If they weren't in spec they were stripped down, rebuilt, then run in on the dyno after the rebuild (and checked that they were in spec), and then sent to the mechanical workshp for re-installation.

If I remember correctly, just the full day dyno testing to see if the engine needed a rebuild or not costed $8500. Maybe REPCO was charging the army for a rebuild anyway?????

[F'n_Rover]

the army and $$$$$$.

last year i quoted to supply some products to a third party who was installing them at the puka army training centre. I gave my customer an all up price for twelve units , he mistakenly thought my quote was a per unit price. He submitted his quote and got the job, BTW i know for sure he was quoting against other parties. Everything to do with the army is bloody good mark-up

[RUFF]

Why does the rear axle have steering balls on the end of it? Does it have rear steer as well?

[uninformed]

hey tony i think that the pic of the "mid" axle is actually the front axle and the 3 link is leading NOT trailing.

i had a close look at the photo and i think i can see the front of the fire wall behind the axle.

i asked this question before and ben replied -see above

cheers serg

[ISUZUROVER]

Why does the rear axle have steering balls on the end of it? Does it have rear steer as well?

As serg said above, that is the front with leading arms. Here are the rear axles.

[outlaw]

That's a very nice beast

[weeds]

Hey Ben

A mate of mine works in the trade repair area at Bulimba and reckon they send too many out for engine work, it would be interesting to know how many get rebuild as they are a pretty bullet proof engine. Eight hours on a dyno seems a bit over the top for a standard engine. Still wouldn't mind getting my hands on a tubo version.

Kelvin

[Cheezy4x4]

Can someone please ask them too give back all my spare 31's that they used when building this thing.

[desertrover]

I just can say f..king ugly.
If you build a thing like that there a better options than to use a like this converted LR cab.