Outer Limits 4x4 Board

I'm fascinated by Dave Ashcrofts Hi9" into Rover, but it got me wondering.... if a Ford 9" will fit the 8.5" hole, then has anybody tried fitting the Landcruiser 9" diff rather than the Hilux 8" diff into a Rover housing??? Its not much more on the CW, though I'm not sure how well the housing and member will mate up.

edit: Actually likewise with the Nissan Patrol front diff for a HP.

Hi Simon , I'm also fascinated by the Hi pinion 9" Ashcroft diff , I saw some photos of it on Pirates 4x4 and it looks impressive .

I don't know how much engineering would be involved fitting a Toyota Landcruiser 9" diff inside a Rover Diff housing , I assume the mating would be an issue.

Perhaps this is a start to SlunnieEngineering.com . :armsup:

I can not see how it will fit
I have just fitted a 80 series centre into the rangie housing and allthough it fitts well any bigger i see as having an issue.
I thought patrol and 60 size centres are acctually a 9.3/4 crownwheel.
Oh yeah got the link to the ashcroft one please guys.
Cheers Jamie
AKA " NOTTIE ENTERPRISES"

nottie wrote:I can not see how it will fit
I have just fitted a 80 series centre into the rangie housing and allthough it fitts well any bigger i see as having an issue.
I thought patrol and 60 size centres are acctually a 9.3/4 crownwheel.
Oh yeah got the link to the ashcroft one please guys.
Cheers Jamie
AKA " NOTTIE ENTERPRISES"

Search on Pirate ya NOOB

http://www.pirate4x4.com/forum/showthre ... ight=rover

You suck at the interweb, Nottie


We still good to hook up my Air Locker this weekend

Micka wrote:

nottie wrote:I can not see how it will fit
I have just fitted a 80 series centre into the rangie housing and allthough it fitts well any bigger i see as having an issue.
I thought patrol and 60 size centres are acctually a 9.3/4 crownwheel.
Oh yeah got the link to the ashcroft one please guys.
Cheers Jamie
AKA " NOTTIE ENTERPRISES"

Search on Pirate ya NOOB

http://www.pirate4x4.com/forum/showthre ... ight=rover

You suck at the interweb, Nottie


We still good to hook up my Air Locker this weekend

It wont allow me to search on pirate and the damn site is to farkn big to look thru everything.
I did go thru every thread in the Rover section thou.


Lockers mmmm NOPE
Yeah man for shore. Just got to work around bloody kids Bdays thou.

what alot of fart arsing around .if u want super strong axles diffs cv,s use a nissan housing

defmec wrote:what alot of fart arsing around .if u want super strong axles diffs cv,s use a nissan housing

Bwhahahahahahaha

Super Strong

Nissan

Are you seriously comparing a Nissan diff to a 35 spline 9" diff? If these weren't astronomically stronger in every way than a crappy Nissan diff, then do you think that one of the largest manufacturers and distributors of aftermarket Rover gear would bother?

Absolutely, the 9" is way better than the Patrol or LC. The Nissan CVs I thought were not real flash either.

nottie wrote:I can not see how it will fit
I have just fitted a 80 series centre into the rangie housing and allthough it fitts well any bigger i see as having an issue.
I thought patrol and 60 size centres are acctually a 9.3/4 crownwheel.
Oh yeah got the link to the ashcroft one please guys.
Cheers Jamie
AKA " NOTTIE ENTERPRISES"

and like just like that the show ends.

Oh well, I'll just keep on with fitting patrols to LC housings.

Thanks all!

Slunnie wrote:

nottie wrote:I can not see how it will fit
I have just fitted a 80 series centre into the rangie housing and allthough it fitts well any bigger i see as having an issue.
I thought patrol and 60 size centres are acctually a 9.3/4 crownwheel.
Oh yeah got the link to the ashcroft one please guys.
Cheers Jamie
AKA " NOTTIE ENTERPRISES"

and like just like that the show ends.

Oh well, I'll just keep on with fitting patrols to LC housings.

Thanks all!

I can't see that crownwheel size is an issue. Use an early RRC (non flat bottom) housing. Chop a wedge out if needed...

That said... 9.75" is the same as a sals/d60....

Acctually i think i was wrong on the size and the nissan yota stuff is 9 1/4?
I got a bit bored in the shed last night and was running back and forth with a tape and measured the nine inch in my F Truck and a left over Rover housing and yes it will fit I am sure there will be some die grinding cutting on the mating face but yes it will go. Also from the looks of the high 9 that ashcroft are using it is the one made and sold in USA. ( True High9) It also looks like they have got hold of them with no mounting holes in the carrier and have drilled them themselfs as so they can move them in a touch more. Thats what it appears to me anyways. I do think thou if you were to go to a high9 and the likes then yeah as a bolt in its a great idea. Otherwise it would be a better idea to go to a Diamond housing and use a dana or 9 as the centre and use as strong a shit you can get ahold of for the rest. Cost wise i think this would be cheaper.

The other problem you may have though with fitting a nissan yota big centre would be where the crownwheel sits as it may be on the wrong side for the groove in the sewer cap. Easy to sort though. Just cut it off and if you dont want to buy a new one then build a extention to weld it back on.

Nottie, so you're saying the 9" just drops straight into the Rover housing without a problem, but the hemisphere centreline needs to be further in than how the member has been designed? It'd be interesting to see what the home mods to make this work are - except everything on ebay is low pinion.

Even if it needs a "sewercap" then hopefully 9.25" will also drop in.

I think the Nissota diffs have the CW/P on the same sides dont they? Otherwise the diffs would spin backwards....

Slunnie wrote:Nottie, so you're saying the 9" just drops straight into the Rover housing without a problem, but the hemisphere centreline needs to be further in than how the member has been designed? It'd be interesting to see what the home mods to make this work are - except everything on ebay is low pinion.

Even if it needs a "sewercap" then hopefully 9.25" will also drop in.

I think the Nissota diffs have the CW/P on the same sides dont they? Otherwise the diffs would spin backwards....

Ok - tell me which (cheap) 9ish" diff centre comes in a ratio which matches a D60 ratio 4.88 and numerically lower and I will build one...

ISUZUROVER wrote:

Slunnie wrote:Nottie, so you're saying the 9" just drops straight into the Rover housing without a problem, but the hemisphere centreline needs to be further in than how the member has been designed? It'd be interesting to see what the home mods to make this work are - except everything on ebay is low pinion.

Even if it needs a "sewercap" then hopefully 9.25" will also drop in.

I think the Nissota diffs have the CW/P on the same sides dont they? Otherwise the diffs would spin backwards....

Ok - tell me which (cheap) 9ish" diff centre comes in a ratio which matches a D60 ratio 4.88 and numerically lower and I will build one...

Nice stuff Ben! The only 9" diffs that I've seen on Ebay that are cheap are geared somewhere around 2-3:1 and low pinion. Thats not to say that this is all thats out there.

Slunnie wrote:

ISUZUROVER wrote:

Nice stuff Ben! The only 9" diffs that I've seen on Ebay that are cheap are geared somewhere around 2-3:1 and low pinion. Thats not to say that this is all thats out there.

I don't mean a ford 9", I mean a nissota 9.XX"

I currently have 4.7s and don't want to go to a taller ratio. When I considered a toy 8" for the front, there are no ratios lower than 4.88:1 which match a Sals/D60. I don't want to have to fork out for a d60 4.88R&P just to match up with a front nissota diff.

But I suspect that there aren't any (common) nissota gear sets lower than 4.88???

AFAIK there is only the 5.29:1 in the Toyos and I'm not 100% sure that it available in 9". I think I may have seen it somewhere like Randy's Ring and Pinion, but not sure.

Normally the dana and toyo ratios match up, but lower than 4.88 poses a problem.

Slunnie wrote:Nottie, so you're saying the 9" just drops straight into the Rover housing without a problem, but the hemisphere centreline needs to be further in than how the member has been designed? It'd be interesting to see what the home mods to make this work are - except everything on ebay is low pinion.

Even if it needs a "sewercap" then hopefully 9.25" will also drop in.

I think the Nissota diffs have the CW/P on the same sides dont they? Otherwise the diffs would spin backwards....

Hold on slunnie Re read what i posted
The nine will go in but may need trimming of the mounting face on the rover housing. Depth looks fine. I havent a spare nine centre so cant drop it in to make shore.
The nissota centres are a touch bigger so may pose a problem.
If you like slunnie i have a 80 / 60 rear centre in the shed so i could try droping it into a rover housing Its a shyt housing so i dont care if i have to hack at it to go.
To go the Toyota 9.1/4 imch centre you will still have to use the 60/hilux CVs. Also both ends will be low pinions.
I think the toyota 8 inch centre is still the best choice for price and ease.



Oh yeah the only 9inch high pinions are from http://www.truehi9.com/

And normal 9inch gear sets will not work with them.

Micka wrote:AFAIK there is only the 5.29:1 in the Toyos and I'm not 100% sure that it available in 9". I think I may have seen it somewhere like Randy's Ring and Pinion, but not sure.

Normally the dana and toyo ratios match up, but lower than 4.88 poses a problem.

Marks do have a 5.29 for a Toy9". I'm not sure if that corresponds with anything.

Ford 9" have everything!

nottie wrote:

Slunnie wrote:Nottie, so you're saying the 9" just drops straight into the Rover housing without a problem, but the hemisphere centreline needs to be further in than how the member has been designed? It'd be interesting to see what the home mods to make this work are - except everything on ebay is low pinion.

Even if it needs a "sewercap" then hopefully 9.25" will also drop in.

I think the Nissota diffs have the CW/P on the same sides dont they? Otherwise the diffs would spin backwards....

Hold on slunnie Re read what i posted
The nine will go in but may need trimming of the mounting face on the rover housing. Depth looks fine. I havent a spare nine centre so cant drop it in to make shore.
The nissota centres are a touch bigger so may pose a problem.
If you like slunnie i have a 80 / 60 rear centre in the shed so i could try droping it into a rover housing Its a shyt housing so i dont care if i have to hack at it to go.
To go the Toyota 9.1/4 imch centre you will still have to use the 60/hilux CVs. Also both ends will be low pinions.
I think the toyota 8 inch centre is still the best choice for price and ease.



Oh yeah the only 9inch high pinions are from http://www.truehi9.com/

And normal 9inch gear sets will not work with them.

Gday Nottie,

Sorry I'm with you. It would be interesting to see if it does drop in, it just seems weird that people would be fitting Toy8" diffs if the Toy9" diffs fitted. Interestingly, reading on Marks Adaptors website, they reckon its a 8.8" diff. I think at the moment I'll continue to pursuit the GQ into LC60 housing as I've already installed the housings, but each of these would be a great development for the Rover housings. I've got GU and 60 diffs here, but oddly no Rover housings available here to try it out and see whats what, but if you do that would be excellent to see if it goes or not or what needs mods. I agree though that the LC60 is no good for the front at least and the GU/GQ would be the way to go.... but if its good, then it may also be an interesting option for a Hipinion rear into a Rover housing too - likewise the Hi9.

There was a 5.29 i think in the toyota 8 inch that came out in the hiace vans.
But i could be wrong.
Will let you all know how the 60 centre goes in the Rover housing as i am allways looking for somethn to fark around with.

nottie wrote:There was a 5.29 i think in the toyota 8 inch that came out in the hiace vans.
But i could be wrong.
Will let you all know how the 60 centre goes in the Rover housing as i am allways looking for somethn to fark around with.

Nice, thanks Nottie!

Ok IT DOES NOT FIT.
There easy done But as Ben has said if you got ahold of a early rangie diff with the round top and bottom it may go but will be tight. there will be considerable dicking around to get it to go aswell. Might aswell just adapt the centre housing section off a 60 or 80 rear with the centre then run the rangie tubes with all the link mountes on them allready. In my opinion this would be less work.
So in all just stick with the toyota 8inch centres

nottie wrote:Ok IT DOES NOT FIT.
There easy done But as Ben has said if you got ahold of a early rangie diff with the round top and bottom it may go but will be tight. there will be considerable dicking around to get it to go aswell. Might aswell just adapt the centre housing section off a 60 or 80 rear with the centre then run the rangie tubes with all the link mountes on them allready. In my opinion this would be less work.
So in all just stick with the toyota 8inch centres

Cool, thanks for this Nottie. So it seems that 9" is the limits for CW's into Rover and if you want bigger that a full axle swap is the go aside from cut/shut. Thanks once again!

Hi Guys,

we have been working on this flat out and have learnt loads,

we are now on the 4th prototype knuckle and it looks nice, the inner is machined from solid steel and the outer is fabricated,

we have incorporated some neat design features,

in Europe after a wet weekend competing it's usual to have to strip the hubs to get the water out and regrease etc. we have double drilled the drive flanges so you have 10 bolts but 2 of them, opposite eachother, are drilled with a gallery through the hub to the gap between the wheel bearings, the idea being you remove both screws, blast grease down one with a pneumatic grease gun until it comes out clean from the other hole, put the bolts back in, job done.

front and rear hubs are designed so you can fit twin brake calipers,

the diff housings are on the 3rd prototype and are very near the final build, ARB's are modified and ready to fit, shafts and CV's are ready.

we are aiming to have a pair of axles on display at the Billing show in the UK in July then will fit then on a vehicle to go to the Portugese Rainforest Challenge for their first test.

The diff centre discussed in this thread would uprate the diff if fitted but this is of little gain unless the shafts and CV's are on a par. To make it a bolt in would mean making a new housing if it is at all possible and making a housing is harder than it looks believe me !

Dave thanks heaps for keeping us all in the loop.
Any info you could throw our way as you develop this would be great.
Also i will put my hand up to test the first ones down under to make sure they will hold up to our harsh landscapes. ( Im sure they will )
Are we anywhere in the ball park with our assumptions as to how you have got the centre into the rangie housing

Thanks for posting Dave!

Any pics of the latest setup???

I am currently deciding whether to build a Sals/D60 or some sort of rover/9" hybrid. Let me know if you need a beta tester

Thanks for the information Dave , I'll also Volunteer to be a Guinee Pig. :lol:

Stand in line Guys

Hi,

most parts are in the machine shop at the moment but they should be back very soon and we will do another dummy build, will post some photos up then,

had various delays the getting the housing machining right, to get a good contact pattern the 2.250" hypoid offset is critical, the fixtures used by the machine shop weren't close enough but the first 2 diff housings should be back with us today along with the new design of knuckle outer,

ashtrans wrote:Hi,

most parts are in the machine shop at the moment but they should be back very soon and we will do another dummy build, will post some photos up then,

had various delays the getting the housing machining right, to get a good contact pattern the 2.250" hypoid offset is critical, the fixtures used by the machine shop weren't close enough but the first 2 diff housings should be back with us today along with the new design of knuckle outer,

How extensive are the mods required to the 9" ARB locker?

Do you plan to test it for rear-steer applications?