weak toyo and nissan diffs and 38"+ tyres, what gives?

[hypo]

since the lot of diffs we got Rob, i have got another 4 of the same 4 cheaper again and have got no more spares

i looking into gettin some aftermarket gears as they say they r stonger

[bj on roids]

Stock out of the box strength of front axles:
From strongest to weakest:
80 series
Nissan GQ
Toyota landcruiser/hilux/Dana 44
Dana 30

Hilux parts are so cheap and readily available as compared with the dana 44.

[bogged]

Name: lwebb
Phone: 07 46309818

Part No. RD30 does not exist on the ARB site does anybody know if this is a old model ??? or an incorrect quote ???

Give the bloke a call, NFI on the part #

[Wooders]

Only curious - but whats the wms 2 WMS measurement of the HiLux front?

[bubs]

Only curious - but whats the wms 2 WMS measurement of the HiLux front?

same as the back of a narrow track 54" i think can't remember without remeausring

[FireTruck]

ouch... TJ D30 is about 61".

[CRUSHU]

ouch... TJ D30 is about 61".

interestingly, a ford falcon 9" xa onward, is also 61" and xw xy length is 59"

[Wooders]

No wonder they call 'em the Rollux

So whats the 80 series & GU / GQ measurements??

[Wendle]

Stock out of the box strength of front axles:
From strongest to weakest:
80 series
Nissan GQ
Toyota landcruiser/hilux/Dana 44
Dana 30

Hilux parts are so cheap and readily available as compared with the dana 44.

I would reckon:
Nissan GU
80 series/Nissan GQ - I would put these on level footing
Toyota landcruiser/hilux/Dana 44
Dana 30

but that is only the stuff that is easy to obtain here.

[hypo]

Is there a longfeild or similar available 4 an 80 series CV ???

[POS]

Is there a longfeild or similar available 4 an 80 series CV ???

I believe CORE can do them, NOT sure though!!!!!!!!!

[RUFF]

Is there a longfeild or similar available 4 an 80 series CV ???

There will be

[hypo]

Is there a longfeild or similar available 4 an 80 series CV ???

There will be

i know hurry up

[bj on roids]

Stock out of the box strength of front axles:
From strongest to weakest:
80 series
Nissan GQ
Toyota landcruiser/hilux/Dana 44
Dana 30

Hilux parts are so cheap and readily available as compared with the dana 44.

I would reckon:
Nissan GU
80 series/Nissan GQ - I would put these on level footing
Toyota landcruiser/hilux/Dana 44
Dana 30

but that is only the stuff that is easy to obtain here.

Okay in terms of sheer size:
100 series, solid axle is the biggest but $$
GU
80 series
GQ

they are the top four, ive had them beside each other and measured. The gq ones are smaller than the 80 series ones. But they are heaps cheaper.

[Wooders]

OK that's nice bj - But what are the WMS2WMS measurements

[zzzz]

hey thanks for all the replies and good tech info.
I thought it would be a good post to hear what everyone had to say.

I have the D30 and really don't want to spend all that much on it.
Bit of a rock and a hard place thing though as I also have some CTM's that will fit a 44 front or a 30 - they use the same size uni's.

Or I could wait around and try and do 60's at some point.
Or look into yota/nissan swaps, or mogs (yeah right).

I realised that the hilux diffs were comparable to a 44, but am still amazed at a lot of the guys running around with 38" and bigger tyres on them without a whole heap of problems. Perhaps I should give the rear 44 a bit more confidence.

Great to here info from each different vehicle type available.
Keep the tech info coming...

[RUFF]

I dont think the rear 44 is up to the task of running 38" tyres in stock for for long. The axles are the weak link. Sams old 44 used to twist axles like licorice with 42s fitted where as both bj(42s) and POS(38.5/16/15) are yet to twist a rear axle. I have also blown a rear ARB in mine running 38.5/16/15s and the axles are fine although i have not put a lot of wheeling time in on these tyres.

[CRUSHU]

a 9" 31sp should still be stronger than a gq rear 33sp diff. thicker axles, stronger pinion, bigger brakes, beats it all round, except maybe ground clearance??

[bj on roids]

a 9" 31sp should still be stronger than a gq rear 33sp diff. thicker axles, stronger pinion, bigger brakes, beats it all round, except maybe ground clearance??

Just about everything here i can think of is incorrect:

Gq rear has 31 splines, in the coil sprung, im sure of it.
The axles are similar in terms of strength, both being smei floaters.
The pinion on the 9 is stronger so you are right there, but depends on what 9" you've got too.
the 9" would have more clearance than the GQ.
The brakes also depend on what the diff came from. bigger is not necessarily better though, there comes a time when a brake while being bigger becomes too heavy, or locks up too easily.

[CRUSHU]

the 31 sp front axle in the gq, according to the arb page, is 1.26" dia, the 33sp rear is 1.31" dia. the 9" 28sp (like falcon etc) is 1.20", and the 31sp is 1.32". the nissan has more splines on a thinner shaft. that doesnt make them stronger!
what 9" has a weaker pinion?? the standard 9" has 3 bearings supporting the shaft, and the housings just get stronger from there. with nodular cases, etc. the only weak point i can see is maybe the lsd, the nissan ones dont seem to wear out like the 9", but then, not many nissans have the power that 9" seem to take. i havnt seen many 500hp small block nissans!

[bj on roids]

the 31 sp front axle in the gq, according to the arb page, is 1.26" dia, the 33sp rear is 1.31" dia. the 9" 28sp (like falcon etc) is 1.20", and the 31sp is 1.32". the nissan has more splines on a thinner shaft. that doesnt make them stronger!
what 9" has a weaker pinion?? the standard 9" has 3 bearings supporting the shaft, and the housings just get stronger from there. with nodular cases, etc. the only weak point i can see is maybe the lsd, the nissan ones dont seem to wear out like the 9", but then, not many nissans have the power that 9" seem to take. i havnt seen many 500hp small block nissans!

I said the 9" pinions were stronger, and obviously with nodular housings they only get stronger, but it also depends on what year and vehicle they come from. Yes the pinion is supported by three bearings, yes that adds to the strength. I too havent seen many 500HP small block nissans.

[CRUSHU]

sooo.... that means the 31sp 9" would be stronger? than a 33sp gq.

[Strange Rover]

Ithink its very hard to tell which stack axle is better than another stack axle because what material the companents are mad out of make a very big difference.

For example a rear d44 should be stronger than a rear hilux axle. Both have the same size axles but the d44 has a 8.5in crown vs the toys 8in crown. But the d44 I ran from an international scout had really crap axles in it and twisted easily (not very easily but easier than toy). I would have twisted about 8 of them in a 6 month period while POS and ruff have never twisted a hilux rear (although they have done a fair few crowns and pinions which the dane never did).

So comparing a stock 9in to a stock gq is not that easy to do. I know a guy who swapped a stock scout d44 for a stock 31 spline 9in (from an F100) and broke the 9in easily. His opinion was that the stock 9in is weaker than his d44. Now the failure may have been bad luck but again it really depends on what materials are used in the stock setups.

So with the drag racers that run 9in diffs do they break stock 31 spliners and have to get alloys made. If they do then I would say that the stock 9in axle would be weaker than the stock GQ.

IMO the jap axle manufacturers use much better material than the US guys in their axles.

But once you start talking aftermarket stuff then you come back to size and spline count.

Sam

[bj on roids]

So comparing a stock 9in to a stock gq is not that easy to do. I know a guy who swapped a stock scout d44 for a stock 31 spline 9in (from an F100) and broke the 9in easily. His opinion was that the stock 9in is weaker than his d44. Now the failure may have been bad luck but again it really depends on what materials are used in the stock setups.

So with the drag racers that run 9in diffs do they break stock 31 spliners and have to get alloys made. If they do then I would say that the stock 9in axle would be weaker than the stock GQ.

IMO the jap axle manufacturers use much better material than the US guys in their axles.

But once you start talking aftermarket stuff then you come back to size and spline count.

Sam

Exactly, I like the point about the jap manufacturers making the stuff better from stock, the treating and material is far better. The US guys will admit it (stock for stock) but once you buy the aftermarket axles the Dana gear can be made far stronger.

Sam, not many drag racers would use 31 spl 9" they all use 35 spl and up, all aftermarket, currie, strange, etc 40/46, also the serious drag racers, dont even use the centre, its all aftermarket.

But I must be wrong on the nissan rear. I said its 31spl. But I can only say ive ever seen the fronts out of the car and it was 31. I thought they were the same front to back. I wonder how the christies did thier rear high pinion diff?

[Strange Rover]

I also think a nissan rear is 31 spline. Fairly sure I even counted them once??

Sam

[Singo17]

I also think a nissan rear is 31 spline. Fairly sure I even counted them once??

Sam

What about the 37 spline H260? In some MQ's , Leaf GQ utes and Some GU's thats a 10 in crown and I think 1.51in axle should be strongish

[CRUSHU]

most toyota axles are made of hytuff, which is pretty much what aftermarket alloy axles are made of, and the arb site tells me that the gq wagon rear is 33sp.

[MKPatrolGuy]

GQ Front 31 spline
GQ Rear 33 Spline in H233
37 Spline if H260

[Wendle]

Nissan rear is 33 spline. To do the hi-pinion rear the airlocker side gears are swapped and the centre machined a touch to take the bigger axles.. The drum brake H233 rear may be 31 spline?? but that is another story...

Kind of hard to compare japanese stuff to US stuff.. A nissan axle is a nissan axle, but danas and fords have been made for decades, so the same model designation could be built from dozens of different material grades over it's time in the market..

[bj on roids]

Nissan rear is 33 spline. To do the hi-pinion rear the airlocker side gears are swapped and the centre machined a touch to take the bigger axles.. The drum brake H233 rear may be 31 spline?? but that is another story...

Kind of hard to compare japanese stuff to US stuff.. A nissan axle is a nissan axle, but danas and fords have been made for decades, so the same model designation could be built from dozens of different material grades over it's time in the market..

We all know the H260/290 is a entirely huge and different issue, so leave those out of this.
Thanks for the high pinion info carlton. do you know if it has held up in the rear of thier vehicle?

The thing about the Us stuff is they might do a run of 10,000 axles or more, and this may come from 5 or numerous foundrys, so the strength/quality and material is all over the place. It truly is and this is shown with some axles breaking quickly and others taking a lot longer. The US built axles do not have the quality control of the Japanese axles. Although when talking about the sheer size the US axles win out.