Strongest IFS / IRS diff

Post by **Surfection** » Sun Jun 20, 2004 2:33 pm

After some opinions on what you guys think is the least weak independantly sprung diff assembly... has to be affordable so no hummers etc etc.

Please take the padding elsewhere.

Thanks, Jeremy

Post by **RUFF** » Sun Jun 20, 2004 2:40 pm

Are we talking just the centre section or the entire CV,driveshaft combo?

Post by **Surfection** » Sun Jun 20, 2004 2:50 pm

RUFF wrote:Are we talking just the centre section or the entire CV,driveshaft combo?

We're talking just the center section but the whole unit, with flanges for driveshafts and tailshafts... should have been more specific!

Post by **RUFF** » Sun Jun 20, 2004 2:53 pm

Ok then from my experiances the strongest centre sections i have seen are not out of a 4wd but are common and cheap. Commodore IFS rear centres. On the street i have seen these handle a lot of HP. But not sure how they would go with Shock loading in an offroad situation.

Post by **NICK** » Sun Jun 20, 2004 2:57 pm

i would have to save MN pajero.

NICK

Post by **J Top** » Sun Jun 20, 2004 3:16 pm

I may be wrong but aren't the commo IRS diffs the ford 9" in alloy
Gives you a huge gear choice
J Top

Post by **RUFF** » Sun Jun 20, 2004 3:36 pm

J Top wrote:I may be wrong but aren't the commo IRS diffs the ford 9" in alloy
Gives you a huge gear choice
J Top

No they are a BorgWarner but there is a Nine inch replacement that bolts straight in. Still a lot of gears around for the BW.

Post by **slowhilux** » Sun Jun 20, 2004 4:03 pm

JZA80 Supra IRS diffs. Fastest street registered supra in the U.S runs 8.7 1/4 mile, with over 850rwhp, and guess what?? The box, tailshaft and diff are ALL FACTORY SPEC.

Being 3.2:1 ratio would extend the life a bit.

Fastest JZA80 in OZ does 9.3, but has a 2 speed powerglide box, and has the std rear end in it.

Failing that, Nissan R200. And the ones found in TT 300ZX's

Post by **Surfection** » Sun Jun 20, 2004 4:50 pm

Awesome, thanks for the responses so far guys, keep them coming !! Anyone bought a commo diff lately, or know what they're generally worth ?

Cheers, Jeremy

Post by **hotrod4x4** » Sun Jun 20, 2004 5:26 pm

if u want strong
go for a corvette independant rear
very thick axles and centre section

just not sure on price
but they have been around since mid to late 80's so shouldnt b too bad

theyve been known to run 8second passes on them at the strips in the states
and the load on the rear end on a launch of a car doing times like that has to prove they r strong

Post by **Gwagensteve** » Sun Jun 20, 2004 6:13 pm

Jaguar rear ends are definitely Dana 44 - it should allow for a wide range of gears, and old jags are pretty cheap now. I seem to recall that one of these was used in the front of the chev suburban desert racer that ORU/Petersens Off Road inthe US built a couple of years ago. I think they ran 4.56 or something similar with a 37" tyre, at high speed and with a healthy 8100 vortec. They also have a pretty easy mounting pattern - four bolts on top I think.

I reckon they are pretty similar to the Vette diffs, but would have to be cheaper here.

Post by **auto_eng** » Sun Jun 20, 2004 7:47 pm

I'd give the vette diffs a miss just because they are expensive. About $2500 for a second handie.

Post by **Bitsamissin** » Sun Jun 20, 2004 9:36 pm

If your strictly talking about IFS/IRS for 4x4 application that you can get your hands on locally at not an outrageous price I would say NM Pajero.
The Ralliart Evo Paj's are pumnping out over 600Nm and 450+HP without any major drivetrain drama's. The diffs and axles are pretty much stock they just add fancy things like twin shocks, hydraulic bumpstops and tubular A arms / links.

Post by **DAZZ** » Sun Jun 20, 2004 9:47 pm

The front diff in a late model Frontera is a Dana. Can't remember which though...

Post by **NICK** » Sun Jun 20, 2004 10:06 pm

Bitsamissin wrote:If your strictly talking about IFS/IRS for 4x4 application that you can get your hands on locally at not an outrageous price I would say NM Pajero.
The Ralliart Evo Paj's are pumnping out over 600Nm and 450+HP without any major drivetrain drama's. The diffs and axles are pretty much stock they just add fancy things like twin shocks, hydraulic bumpstops and tubular A arms / links.

this is what i based my theroy on, the only other late model, easily available IRS rear i could think of was the HRV/CRV/XTRAIL and all are piss weak, and have huge problems with the small cv shafts flogging out and they are only powered by 4cyl engines.

NICK

Post by **NICK** » Sun Jun 20, 2004 10:08 pm

DAZZ wrote:The front diff in a late model Frontera is a Dana. Can't remember which though...

they are the same as rodeos, and they are not dana's.

unless they changed in the 2003+ models.

NICK

Post by **DAZZ** » Sun Jun 20, 2004 10:29 pm

I thought they were different to the Rodeo. I'm sure they had a Dana at one end though. Maybe the rear is, cos the ARB difflock is the same as a Jeep.....

The 99+ US built ones, not the Pommy puss bucket one!!!!!

Post by **Slunnie** » Sun Jun 20, 2004 10:49 pm

The rear in the V6 frontera is a Dana. Not sure about the front though. The V6 Frontera is US built, not Jap/Pom.

Post by **Surfection** » Sun Jun 20, 2004 11:08 pm

Stupid question.... but two front diffs can be used to create 4wd can't they ? Cause you're turning the front a different way ? But you're running on the wrong side of the teeth so sacrificing strength ?!

Post by **fightara** » Mon Jun 21, 2004 9:45 am

Got a feeling Mussos run Danas.

Post by **1MadEngineer** » Mon Jun 21, 2004 9:54 am

Just Cus it is made by DANA doesn't mean it is strong could be a dana10 :cry:

RUFF is right the commy irs ctr is the strongest and value for money, jag is only good for up to 500 real HP. Otherwise a new Halibrand QC rear section is about $2400 and will cop 800hp all day and only takes 15min to do a gear change.

Post by **Guy** » Mon Jun 21, 2004 9:57 am

1MadEngineer wrote:Just Cus it is made by DANA doesn't mean it is strong could be a dana10

Alot of golf buggies run dana diffs ... :armsup:

Post by **Guy** » Mon Jun 21, 2004 9:59 am

Gwagensteve wrote:Jaguar rear ends are definitely Dana 44 - it should allow for a wide range of gears, and old jags are pretty cheap now. I seem to recall that one of these was used in the front of the chev suburban desert racer that ORU/Petersens Off Road inthe US built a couple of years ago. I think they ran 4.56 or something similar with a 37" tyre, at high speed and with a healthy 8100 vortec. .

That was actually a dana 60 centre section ..

Post by **fightara** » Mon Jun 21, 2004 10:01 am

yeah, not real sure which Dana it is

Prob 30...

Commo sounds good, but what about if you want to lock it?

Post by **Slunnie** » Mon Jun 21, 2004 11:56 am

1MadEngineer wrote:Just Cus it is made by DANA doesn't mean it is strong could be a dana10

But even the Dana 10 is a Dana!

Seriously though the V6 Frontera rear is a Dana 44 but its an axle. I'm pretty sure the front is different though, but it has some axle tubes that come off it still which is probably not what you want.

Post by **fightara** » Mon Jun 21, 2004 12:57 pm

fightara wrote:Got a feeling Mussos run Danas.

Front/Dana 30
Rear/Dana 44

And that stonking 3.2 Merc V6! :armsup:

Post by **bazzle** » Mon Jun 21, 2004 1:03 pm

And you didnt want Padding.. lol

As stated earlier the Pajero rear is the go. Being used in a couple of private big HP Safari vehicles too (Not Mitsubishis)

Bazzle :lol:

Post by **Juzza** » Mon Jun 21, 2004 3:14 pm

bazzle wrote:And you didnt want Padding.. lol

As stated earlier the Pajero rear is the go. Being used in a couple of private big HP Safari vehicles too (Not Mitsubishis)

Bazzle

Mmm, Frontera? :twisted:

Post by **mickrangie** » Mon Jun 21, 2004 3:26 pm

This might sound like a dumb quesion....

WTF would you want IFS or IRS for wheelin?

Or is all for Bling factor? :roll:

Post by **Slunnie** » Mon Jun 21, 2004 4:55 pm

Make it into a solid axle with loads of diff clearance.

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