Outer Limits 4x4 Board

If the landcruiser rear diffs suposably share the same size wheelbearing
Is it possibly to put 5 stud rear hubs from a 105 ,76,78,79 series back diff on a 80 series back diff

If that would work could you drill the 80 series axels to allow for larger diameter axel studs and dowls

yes

cool
have you done this or seen it done mate or just presume itll work

I have a similar question

I'm doing a SAS to the brother in laws hilux and we're looking at using a 70 series front diff housing so that that it matches the width of the rear and has the high pinion front diff for driveline angles

Now i've heard that the 78 and 79 diff housings compared to a 75 are

a. a little wider
b. a little smaller/weaker/lighter

can anyone confirm this as i was under the impression that the only difference was the stud pattern and the link mounts vs. spring perches. Just how much lighter than 75 are talking about? weaker than 80 series gear? or stronger than solid hilux? by how much?

Secondly, if we do go the 78 series housing (since having the mounts and coil hats already there is a bonus), can the 16 inch calipers, rotors, hubs be swapped for their 15 inch 75 series counterparts? He already has two sets of tyres and rims so it would definately be a cheaper option, but it would allow him the option of going back to bigger braking and rims later on.

Finally, if we go late model 75, are any of the 100, 80 or 78 series brakes and rotors compatable to upgrade the braking for him?

Is is possible to just take the whole swivel housing from a 75 and put it on a 78 axle housing, that way i can do hi steer on the steering and not worry about fabbing the mounts on the housing.

80 series and 100 series axle housings are the same part number. V8 79 series and 105 series brakes are identical front and rear, again same toyota part number in most cases (there is a solid disc available for the rear of a 105 for some reason. 40, 60, 80, 105, 75/76/78/79, rear hubs are all the same except 10mm axle dowels, they appear a slight bit beefier in the 105/7x series and the 5 as apposed to 6 stud.

the front appear to be the same aswell (i havent taken any measurements as yet)

Early 75 front housing uses 9.5" centre (same as rear).
Later 75 front housing uses 8" HP front (same as 80).
Not 100% sure, tho think 75 uses same CV's as Hilux/60 series.

78/79 also has HP front with bigger CV's like 80.
Swivel hubs not interchangeable as trunion bearing is bigger.

Mr DJ wrote:Early 75 front housing uses 9.5" centre (same as rear).
Later 75 front housing uses 8" HP front (same as 80).
Not 100% sure, tho think 75 uses same CV's as Hilux/60 series.

78/79 also has HP front with bigger CV's like 80.
Swivel hubs not interchangeable as trunion bearing is bigger.

So you're saying that 75 swivel housing won't go on a 80/79 knuckle?

I wonder then if the bearing hub/stub/rotor/calipers will swap around?

One possibility it seems is that if the 78 use the same swivel hub as an 80, that i can just plonk early 80 series 15" gear on it.

chunderlicious wrote:80 series and 100 series axle housings are the same part number. V8 79 series and 105 series brakes are identical front and rear, again same toyota part number in most cases (there is a solid disc available for the rear of a 105 for some reason. 40, 60, 80, 105, 75/76/78/79, rear hubs are all the same except 10mm axle dowels, they appear a slight bit beefier in the 105/7x series and the 5 as apposed to 6 stud.

the front appear to be the same aswell (i havent taken any measurements as yet)

Does that mean that the (5stud hub) Diameter of the hub part that sticks through and out past the rim is larger
than the 6 stud hub dia

chunderlicious wrote:80 series and 100 series axle housings are the same part number. V8 79 series and 105 series brakes are identical front and rear, again same toyota part number in most cases (there is a solid disc available for the rear of a 105 for some reason. 40, 60, 80, 105, 75/76/78/79, rear hubs are all the same except 10mm axle dowels, they appear a slight bit beefier in the 105/7x series and the 5 as apposed to 6 stud.

the front appear to be the same aswell (i havent taken any measurements as yet)

I was under the impression that since the change to 10mm studs the PCD of the studs also changed?

i did too, it is still a six stud axle stud pattern and again without measuring it is the same, have the same part number for studs too... whether on not that means anything?

the splines and diff centre on the rear is also different from 80 and before and 105 and later diffs including 79.

yes sorry my bad wording, the 40, 60, 75 front knuckles are different. the coil diffs are all the same just different widths between 7x series and 80/105...

I swapped 80series rear axles and diff centre into a 105 series housing. It was not entirely straight forward.
the 80 series diff carrier (pumpkin, 3rd member etc) bolts in, but the 80 series and 105 series axle splines and side gears are different.

To fit 80 series axles into a 105 series 5 stud hub I had to re-drill the 80 series axle flanges, but the hole spacings are different. I had trouble drilling the holes out accurately and still have to fix this up.
The 80s axle flanges are smaller diameter, so re-drilling the holes for 10mm studs and cone washers doesn't leave much material at the edge of the flanges.

The 105series 5 stud hubs are larger O/D at the flange and also at the WMS,
the PCD on the hub studs is different as well as studs being larger ie.10mm studs and cone washers.
the offset on brake discs is different also

hope this helps.

what are you trying to do?

Im looking to coil the rear end of my 79 series ,
The 105'series rear diff would be to wide for my likings
A 80 series rear diff has good track width , and am thinking of using my 79 series hubs , brakes etc on a 80 diff

I think I'll end up welding spring Perches and control arm brackets to my 79 diff

it is the hubs that change the track width, the diff housings are the same, the axles are the same length also, the hubs and brake rotors have different offset to the WMS.

so an 80series housing with 105 series hubs will be the same track width as a complete 105 series diff

a 105 with 105 hubs is the same width as 80s isnt it???? my 105 diff is the same as an 80 wms.

Both with skinnys
Suposably the 80 rear track is 1580
Suposably the 105 rear track is 1600
It is quite possible they use the same housing with wider hubs offset on the 105

105 is slightly wider, 15mm in the rear and 30mm in the front (I think, not 100% sure, shit memory)

Redbook.com has the specs Of the cruiser tracks etc
A v8 79 with a 105 rear diff would be alot closer front back track ,
But I have turbo6
I would like a wider rear diff to stop the 35s rubbing on the chasiss but the 105 rear track will look goofy vs my STD 6cyl 79 series front track , and if I go the 80 series rear diff with 105 or 79 hubs it'll make no track width difference ,

I'll more than likely find a bare or bent rear 80 or 105 rear diff and unpick spring perches and control arm brackets and weld them on my 79 rear diff

Any one got any unwanted rear diffs or any for sale

the 80 housing is still wider than the 75 housing. the hubs just add that extra 15mm on the hundred.

i converted my 79 v8 rear diff to a 105 diff and it has made the rear 1/2 inch wider each side.

just put a hundred diff in the front aswell.

chunderlicious wrote:the 80 housing is still wider than the 75 housing. the hubs just add that extra 15mm on the hundred.

i converted my 79 v8 rear diff to a 105 diff and it has made the rear 1/2 inch wider each side.

just put a hundred diff in the front aswell.

Did you still keep the rear end leaf did you coil convert it with the 105 diff mate

The latest front end conversion is also on the cards in the future , with newer style front panels and factory flares I could Proberly get away with a v8 front diff as well . Im not after a huge cop bait comp truck looking cruiser I still need it to look semi factory to keep the yellow stickers away so putting a 105 diff up front would look kills but push the front Mickey ts out to far.
Not sure how the coils wOuld sit on a v8 front diff as my coil hats on my chassis are not as wide apart as the v8 front coil hats , as the v8s have wider chassis from front of cab forward

GO79 wrote:

chunderlicious wrote:the 80 housing is still wider than the 75 housing. the hubs just add that extra 15mm on the hundred.

i converted my 79 v8 rear diff to a 105 diff and it has made the rear 1/2 inch wider each side.

just put a hundred diff in the front aswell.

Did you still keep the rear end leaf did you coil convert it with the 105 diff mate

The latest front end conversion is also on the cards in the future , with newer style front panels and factory flares I could Proberly get away with a v8 front diff as well . Im not after a huge cop bait comp truck looking cruiser I still need it to look semi factory to keep the yellow stickers away so putting a 105 diff up front would look kills but push the front Mickey ts out to far.
Not sure how the coils wOuld sit on a v8 front diff as my coil hats on my chassis are not as wide apart as the v8 front coil hats , as the v8s have wider chassis from front of cab forward

kept it leaf, ive made my own leaf packs so it rides as good in the rear as it does in the front.... fully hektik as flex now too

chunderlicious wrote:

GO79 wrote:

chunderlicious wrote:the 80 housing is still wider than the 75 housing. the hubs just add that extra 15mm on the hundred.

i converted my 79 v8 rear diff to a 105 diff and it has made the rear 1/2 inch wider each side.

just put a hundred diff in the front aswell.

Did you still keep the rear end leaf did you coil convert it with the 105 diff mate

The latest front end conversion is also on the cards in the future , with newer style front panels and factory flares I could Proberly get away with a v8 front diff as well . Im not after a huge cop bait comp truck looking cruiser I still need it to look semi factory to keep the yellow stickers away so putting a 105 diff up front would look kills but push the front Mickey ts out to far.
Not sure how the coils wOuld sit on a v8 front diff as my coil hats on my chassis are not as wide apart as the v8 front coil hats , as the v8s have wider chassis from front of cab forward

kept it leaf, ive made my own leaf packs so it rides as good in the rear as it does in the front.... fully hektik as flex now too

Do you have any more info more so pics on the rear springs and diff of your 79 mate

GO79 wrote:

chunderlicious wrote:

GO79 wrote:

chunderlicious wrote:the 80 housing is still wider than the 75 housing. the hubs just add that extra 15mm on the hundred.

i converted my 79 v8 rear diff to a 105 diff and it has made the rear 1/2 inch wider each side.

just put a hundred diff in the front aswell.

Did you still keep the rear end leaf did you coil convert it with the 105 diff mate

The latest front end conversion is also on the cards in the future , with newer style front panels and factory flares I could Proberly get away with a v8 front diff as well . Im not after a huge cop bait comp truck looking cruiser I still need it to look semi factory to keep the yellow stickers away so putting a 105 diff up front would look kills but push the front Mickey ts out to far.
Not sure how the coils wOuld sit on a v8 front diff as my coil hats on my chassis are not as wide apart as the v8 front coil hats , as the v8s have wider chassis from front of cab forward

kept it leaf, ive made my own leaf packs so it rides as good in the rear as it does in the front.... fully hektik as flex now too

Do you have any more info more so pics on the rear springs and diff of your 79 mate

I bought a complete 100 series diff off mitchell bros 4wd and stripped it bare. measured 10 times, measured a few more, measured again to make absolutely sure and then made and welded on spring perches (65x65x5) welded tapped bungs on to accommodate p clamps to hold on the brake lines (i stripped the diff completely bare) put on a mount for the brake prop valve and a mount to hold the brake line junction. got 4 new u bolts and superior raised u bolt plates.
I used my 79 series diff centre (3.9 ratio vs 4.3 in the 105) and rebuilt everything else. i used the standard handbrake cable and made an extension using some 2x20mm flat bar.

as for the leaves, its an EFS 2" standard pack that i pulled 2 leaves out of and changed the load leaves over for the standard ones (as they are flat not curved like the lifted pack meaning it takes more up travel till i get the harsh jolt from the load leaves coming into play.) i also run extended shackles and fox shocks. the shackles will get taken out now as ive gone back down to 3 inch front springs and shackles are illegal.

while installing the diff i found that my drivers side shock was not compressing by hand anymore so ive decided to upgrade to 2.5 x 10 kings and ill convert them to a rubber bush aswell when they get here. but the ride after the install was better in my opinion, im guessing because of the extra leverage on the shocks. while i was at downsouth i am trying to convince myself to go for tripple bypass in the front depending on where the bypass tubes are located (still have standard chassis shock mounts).

ill get pics soon, im at home in brisbane and my car is at work in newy.