Strong IFS ideas

Post by **bru21** » Wed Feb 11, 2009 7:46 pm

So seeing shannons build brought the ifs dream back.

The front of my buggy would require very little modofication to run IFS and as yet I have no front diff and a GU rear.

So I'm thing of cut and shut a rear gq / 60s centre and custom flanges, shafts and maybe Pro-am hubs (if they make front wheel drive ones) or importing a chev front or something.

any ideas?

cheers bru

Post by **Slunnie** » Wed Feb 11, 2009 7:56 pm

Is it worth looking for a strong IRS diff. I thought the current style Pajero or something like that was meant to be a strong one.

Post by **ISUZUROVER** » Wed Feb 11, 2009 8:00 pm

Slunnie wrote:Is it worth looking for a strong IRS diff. I thought the current style Pajero or something like that was meant to be a strong one.

No steer though. And it needs to be engineered.

The new F-trucks are IFS aren't they???

Post by **Slunnie** » Wed Feb 11, 2009 8:05 pm

ISUZUROVER wrote:
Slunnie wrote:Is it worth looking for a strong IRS diff. I thought the current style Pajero or something like that was meant to be a strong one.
No steer though. And it needs to be engineered.

The new F-trucks are IFS aren't they???

I thought Bru was looking for the diff rather that the entire end???????

Post by **AFeral** » Wed Feb 11, 2009 8:19 pm

Rear diff in the newer commadores is a dana how about one of those

Post by **bru21** » Wed Feb 11, 2009 8:48 pm

will need to be stronger than a commodore, as 35's and 450hp, 3.8 low range.

like the f truck idea. probably be cheaper than a front live axle.

I'll look into it

Post by **steel** » Wed Feb 11, 2009 9:05 pm

Dave Rowland, of Rovacraft here in Perth, showed me photos years ago of a rig he once built, back in the mother country,and he did something similar using all Rangie gear.
Rangie diff, axle tubes cut either side of the pumpkin with custom flanges carrying a bearing for axle and CV to run on ( CV's housed in rubber boots).
Custom axles then ran down to spindles of of some IFS truck ( Lorry ), which mounted rangie CV and stub axle and hubs and bearings.
It looked so cool i drooled.

The lower wishbones ( a-arms ) mounted to the chassis right next to each other right below the diff centre and must of been 1 metre long!!
Heaps of wheel travel and great ride characteristics.
Would be a good set up for what your getting into, lots of engineering though.

Post by **Slunnie** » Wed Feb 11, 2009 9:17 pm

bru21 wrote:will need to be stronger than a commodore, as 35's and 450hp, 3.8 low range.

like the f truck idea. probably be cheaper than a front live axle.

I'll look into it

One of the complexities of using an IFS front end diff may be that the housing will run axle tubes away from the diff so that the CV's pivot at the same point as the suspension pivots which makes it a wide housing. The IRS diffs will run the CV next to the diff like in Campbells buggy. Perhaps it may be an option to cut down the housing on a F truck front, though I suspect it will be a both sides job.

Post by **zookimal** » Wed Feb 11, 2009 9:24 pm

Current Dirtcomp has a bling Israeli buggy with a converted 14 bolt centre in an IFS setup. All custom though. Is the F-truck setup the best package overall? Strength/design/handling/weightwise?

KOH will be very interesting. If it can make it through the rocks reasonably quickly (as has been said, it's the fastest line, not the technical ones as there's no witches hats) and the desert sections are faster and longer than last year....

Thinking about an IFS setup for the ICV?

Post by **red hilux** » Wed Feb 11, 2009 9:25 pm

there is a guy that had mdified his car a bit and used a supra rear diff, got a couple axles made up and done

Post by **bru21** » Wed Feb 11, 2009 9:49 pm

1MadEngineer has got the ball rolling.

Time to make some parts calls.

pajero......

Post by **blurredvision** » Wed Feb 11, 2009 10:23 pm

What about a Supra diff. Low gears and very tough as well as available LSD centres for them.
I heard that Kartek has a front diff coming out for the CORR racing series that will be available.

Post by **want33s** » Thu Feb 12, 2009 7:28 am

What about a 9" ford diff? Hundreds of ratios available as well as air/electric/manual lockers or spools or mini spools etc.
Dick Johnson fitted them to turbo sierras as IRS. He custom cast small housings out of alloy to replace the pommie diffs.
Might be worth a few calls to Dick Johnson Racing if a 9" will be strong enough. I'm sure he'd still have the patterns/moulds.

Jas.

Post by **leehamescort** » Thu Feb 12, 2009 8:53 am

This is what i've done to get some strength into the hilux/surf IFS.

http://toyotasurf.asn.au/forum/viewtopic.php?t=19571

The Surpa diff has the same diameter axles as a cruiser diff.

Only weak point is the 8" hilux R&P so dependent on the weight of the vehicle might be a bit undersized for what you are doing but at $60 for a diff they are not epensive.

LSD's are plentiful or modify a lokka to suit is pretty straight forward with the right equipment.

The other option is make a custom housing for a 60 series diff and utilise the Supra axles as they are the same spline etc (saves making custom inner axles)

catcha
Leeham

Post by **bru21** » Thu Feb 12, 2009 12:02 pm

Slunnie wrote:Is it worth looking for a strong IRS diff. I thought the current style Pajero or something like that was meant to be a strong one.

Just bought one.

$900 complete. pics tonight

Post by **Gonzo** » Thu Feb 12, 2009 12:15 pm

IFS/IRS from a milspec H1 Hummer strong enough?

They run 37's factory...

Post by **1MadEngineer** » Thu Feb 12, 2009 12:25 pm

Gonzo wrote:IFS/IRS from a milspec H1 Hummer strong enough?

They run 37's factory...

AAM925

Post by **Turoa** » Thu Feb 12, 2009 12:37 pm

Theres a couple of guys here in NZ that run IS all around. One of them uses cruiser diffs (I think, or it could be hilux) with 80 series CV's, custom wishbones etc but I cant remember the type of hubs. The 80 series CV's seem to hold up really well.

Controlled with airstruts aswell so you can raise and lower it

Post by **zookimal** » Thu Feb 12, 2009 12:45 pm

Bit of a blast from the past but this was built on custom arms with gama goat centres.

Post by **steel** » Thu Feb 12, 2009 3:24 pm

Just bought one.

$900 complete. pics tonight[/quote]

allright, am keen to hear what you've got in mind.

I think the IRS Pajero rear has 9 inch ring gear!

Should have enough strength with out being too heavy

Custom A-Arms hey?? not using Pajero links are you?

what front hubs?

Post by **Slunnie** » Thu Feb 12, 2009 4:02 pm

bru21 wrote:
Slunnie wrote:Is it worth looking for a strong IRS diff. I thought the current style Pajero or something like that was meant to be a strong one.
Just bought one.

$900 complete. pics tonight

Nice Bru! I'm looking forward to seeing your work with it.

Post by **-Scott-** » Thu Feb 12, 2009 6:14 pm

steel wrote:allright, am keen to hear what you've got in mind.

I think the IRS Pajero rear has 9 inch ring gear!

9.5", I believe. ARB soon to release an air locker for it - the part number is in the system for placing orders.

Post by **bru21** » Thu Feb 12, 2009 6:48 pm

well here it is.

99% sure of going IRS too using the same unit.

http://www.outerlimits4x4.com/sutra1575456.php#1575456

regards,

Bru

Post by **gorilla** » Thu Feb 12, 2009 7:26 pm

Was thinking about this thing today.

The maximum width of a vehicle on the road (in WA anyway) is 2.5m.

If you use the full width your be able to have loonnnggg.. control arms. It won't be good in technical rock crawling though. But would make for a stable vehicle for high speed and help with flex.

Cheers

Post by **bru21** » Fri Feb 13, 2009 1:22 pm

ohh yes I', going pretty wide! about 100mm wider than gu if i go irs or will be same as gu if I have a live axle rear

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