Topic: Looking for Centred 63" 9.5" diff to replace the 8" factory 55"

[john90lux]

 :crossed:Ok so this is my D/D,
It's a 90 saf Toyota same as your late 80's ( Aust mdl)
I'm rolling on 33" with 4.3:1 with 3" of Spring lift + 2" extended shackles front and rear + 1" drop hanger (front only)

Looking to move up to 37" on a daily bases with 5.29:1 final
I've ordered the Ivan dan sharp fenders and bonnet
And have a a flatbed back
So I should the clearance or close to with current lift, may need bumps top extishion

I'm aware the factory 8" front and back won't take 37" daily
So I'm after some replacment options of diff that will bolt in or bolt in and give me ifs width 63"
Front I think 80series Toyota diff goes straight under with some bracket removal and leaf Spring perches welded on
But rear I'm having issues sourcing something that is centred and can't find anything that is so what are you guys using over there

Trying to stay away from custom

[redneckcustoms13]

I been beating the hell out of 8" yota diffs for years with anything from 35's-42's. 2 of them with 300hp v8s. You should be fine if you don't get crazy with power

[john90lux [OP]]

She still got the 3L 2.8 diesel engine n/a,

[helipilot77]

I'm having custom diamond axle housing built just like you have described. 9.5" centered with fj-80 outers. But it's really not necessary. You should be just fine with the 8" diff I doubt you could brake it with a 3L.

[OOPS]

You could go Ford 9. Myself I would stick with what you have and see how it goes.

[Rockcrawlintoy]

:crossed:Ok so this is my D/D,
It's a 90 saf Toyota same as your late 80's ( Aust mdl


I'm aware the factory 8" front and back won't take 37" daily


Trying to stay away from custom

I ran 37s daily with no issues for over 100k miles. I would be tempted to get a diamond or ruff stuff in the width you want with new shafts

[ryantowry_81]

closest cheap alternative would be a Tacoma rear at around 61" with the "8.4" diff. not really 8.4" ring gear but stronger than the old toyota 8"

the t100 and 1st generation tundra both used the 8.4 diff and the tundra even had a v8

[john90lux [OP]]

Not so worried about busting cv in the front as I can still get home
More worried that the knuckles will give way or I'll blow the rear

25mm mc arnt an option as I can only do the bottom of the knuckles as they don't make a RHD high steer
And being a d/d I'm not using the elimator kit

Is the turunda a floating rear axel as our late mdl Toyota here isn't

[1985CRAWLER]

if youre just using it mainly as a DD then you really wont blow out anything, ive daily driven my 85 runner for years on 37s and still wheeled the piss out of it whenever i had the chance and the diffs were the least of my worries.

the knuckles wont give way unless you are wheeling it pretty good and still the chance is very little, you can always gusset them too.

but seriously i wouldnt worry about the diffs at all if youre gonna be mainly daily driving it, but if you got the funds go all out and put some stronger axles under it.

[john90lux [OP]]

The price of axels down here is stuuped expensive
We can buy bigger diffs complete cheaper

I do 80% on road and only week about every second weekend
Nothing serious but that comes down to opinion
But I'm not competing in tuff truck

[john90lux [OP]]

For road manners
17",18" or 20" rims on 37's

[Rockcrawlintoy]

17 will be just fine

[john90lux [OP]]

Locally 18" are the cheaper tyres then 17 and 20's are most expensive
With close to $100 between the 3 rim sizes
Yet 17" rims are the cheapest and biggest size available in steel

Only resion I ask is because I have to pass engineering
Witch is brake testing and high speed turning and swerving

[OVRAROK]

for on road performance, the 20" on 37 would handle the best, for the simple reason that the sidewall would be smaller, I would never put a 20 on my truck, but that's just me, 17 inch rim is my personal choice

[john90lux [OP]]

I was thinking 18" would be the best compromise
Just that the only people round my way with 37-40" tyres don't run them daily they run 31 daily to stay legal with height laws and 4" lift then only put on, on weekends
Most d/d with single set of tyres run 33" with 2" lift as 4" total height is all we are aloud without paying big on endineering witch I plane to do,

I'm already runnin 1" master with twin dia booster
7/8 rear cylinders in drums
With dba 4000 series slotted rotors with brembo pads up front

Is there any other brake options except rear disk for upgrading