Page 2 of 4
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Tue, 05 Nov 2013 1:21 +0000by rhysbarrett22
VMN wrote:I think Helmut's Math is is a bit suspect as the ratios are determined by the circumference not just diameter. This page on my website shows all of the diffs
http://www.vehiclemods.net.au/hilux-150 ... drivedrainWhilst not perfect, the 4.1 remains the closest match to 33's from this table.
I might stand corrected, but I thought that the ADD was all contained on the axle tube and the diff housing was the same part number on the Hilux and Prado. Therefore swapping the diff over and keeping the Hilux axle tube which is held on by 4 bolts should retain the ADD. Anyway, that was the outcome from the initial research Max and I did. My truck is an SR so I don't have direct experience but i did retain the axle tube.
an any body confirm this? Is the ADD just fixed to the axle tube? So the actual
Diff can be swapped say from a prado into an SR5, the SR5's axle tube just needs to be retained?
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Tue, 05 Nov 2013 1:25 +0000by rhysbarrett22
VMN wrote:I think Helmut's Math is is a bit suspect as the ratios are determined by the circumference not just diameter. This page on my website shows all of the diffs
http://www.vehiclemods.net.au/hilux-150 ... drivedrainWhilst not perfect, the 4.1 remains the closest match to 33's from this table.
I might stand corrected, but I thought that the ADD was all contained on the axle tube and the diff housing was the same part number on the Hilux and Prado. Therefore swapping the diff over and keeping the Hilux axle tube which is held on by 4 bolts should retain the ADD. Anyway, that was the outcome from the initial research Max and I did. My truck is an SR so I don't have direct experience but i did retain the axle tube.
Can anyone confirm the SR5's ADD unit is only Fixed to the axel tube?
Meaning a prado 120 diff can be swapped into an SR5, providing the SR5s axel tube is retained to Keeping the feature.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Wed, 06 Nov 2013 6:02 +0000by Magiver70
Yes it is just the axle tube, i managed to score some very low klm 3.9's from a prado and didn't rebuild them. You can leave the front pretty much complete and swap the axle tube a little collar from the side gear and the rear support then it fits straight in.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Thu, 07 Nov 2013 6:56 +0000by rhysbarrett22
Magiver70 wrote:Yes it is just the axle tube, i managed to score some very low klm 3.9's from a prado and didn't rebuild them. You can leave the front pretty much complete and swap the axle tube a little collar from the side gear and the rear support then it fits straight in.
Awesome. Thank you!
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Thu, 07 Nov 2013 7:35 +0000by Talktheroo
Another thing that is different on the 95 series Prado front diff housing, is the filler plug is at the front of the diff housing.
The 120 filler plug is at the back passenger side of the housing.
Good for a quick glance.
The Roo.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Fri, 10 Jan 2014 8:20 +0000by Scotty3
Just wondering can anybody answer my question iam looking at fitting 4:11s in my hilux and iam having A very hard time finding a 4:11 gear set for the front have rang around a few wreckers and most of the 120 prado front diffs ratios are 3.9 and 3.7 has anyone found any after market 4:11 gears available for the front
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Sat, 11 Jan 2014 8:24 +0000by TTR
Great info !
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Sat, 11 Jan 2014 9:13 +0000by Hilux Max
Scotty3 wrote:Just wondering can anybody answer my question iam looking at fitting 4:11s in my hilux and iam having A very hard time finding a 4:11 gear set for the front have rang around a few wreckers and most of the 120 prado front diffs ratios are 3.9 and 3.7 has anyone found any after market 4:11 gears available for the front
the 4.1 ratio diff your looking for only came out on the Prado120 with the 1KZ diesel fitted.
there arent many because from memory this motor was only available for bout the first 2 years. so mid 2001 to bout 2003 when they did their first tech change to the D4D.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Sat, 11 Jan 2014 10:56 +0000by Scotty3
Hilux Max wrote:Scotty3 wrote:Just wondering can anybody answer my question iam looking at fitting 4:11s in my hilux and iam having A very hard time finding a 4:11 gear set for the front have rang around a few wreckers and most of the 120 prado front diffs ratios are 3.9 and 3.7 has anyone found any after market 4:11 gears available for the front
the 4.1 ratio diff your looking for only came out on the Prado120 with the 1KZ diesel fitted.
there arent many because from memory this motor was only available for bout the first 2 years. so mid 2001 to bout 2003 when they did their first tech change to the D4D.
Ah ok though that might have been the case I carnt even find aftermarket gears in 4:11 for the front
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Sat, 11 Jan 2014 1:04 +0000by Hilux Max
nobody makes aftermarket 4.1 gears, theres only genuine for the front.
the 4.1's come out on the US Tacoma's with the 4cyl petrol engine from memory. so second hand from the US is obtainable.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Tue, 04 Feb 2014 4:05 +0000by Scotty3
Does anybody have any specs of rebuilding these front diffs ie: backlash and pinion preload specs or instructions how to do it
i have build plenty of diffs so iam not new to it but these clamshell diffs are just something different
or if anybody has a online workshop manual or something would be much appreciated
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Mon, 10 Feb 2014 6:47 +0000by GeeBung
Will the tacoma gears fit straight into a standard hilux diff or an rd121?
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Thu, 13 Feb 2014 9:29 +0000by Easty270
What ratio is the hilux diff standard? Im keen to try source some soon
as the 33's change it alot.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Fri, 14 Feb 2014 3:51 +0000by Rocket55
All your answers are on the first page of this thread
viewtopic.php?f=12&t=3554
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Fri, 14 Feb 2014 7:50 +0000by Easty270
Thanks rod, has anyone tried running 3.9's with 33's?
Obviously 4.1 is better IF you can source a set
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Fri, 14 Feb 2014 8:29 +0000by packeteer
yes, both ratios have been done quite a few times, 3.9's (manual) and 4.1 (auto)
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Sat, 15 Feb 2014 11:31 +0000by Easty270
Has anybody bought a set of Locktup 4.56's yet? And what do you now
get from a tank? For $930 im leaning that way
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Thu, 21 Aug 2014 8:05 +0000by dan9245
Im was talking to just differentials in the US and like most i have 285/75/16 mud terrains and after 4.1 ratio diffs.... i had a chat to these guys and asked what i needed they said buy this kit:
http://www.justdifferentials.com/GPFJCR ... lect-1.htmAnd apparently they fit in the original carriers on the hilux they said, so win win. But its best to fit lockers in because you get the new carrier with the locker anyway!!
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Fri, 31 Jul 2015 7:25 +0000by pisso01
Has any one actually swapped the axle tubes from a SR5 to a prado diff? Im in the process of swaping my front diff with a sr5 one, mines a SR. Ive pulled both axle tubes out but there is a collar thing in the sr5 diff that needs to come out. Ive tried levering it out but not sure how hard I should push it. Im swappi g them because the SR5 one has a locker in it.
Cheers,
Chris.
Re: Buying a Prado 120 Front Diff - what to look for
Posted:
Fri, 31 Jul 2015 7:50 +0000by pisso01
Problem fixed. It is doable. Just get a bigger leaver and get the shits and it comes out.