View Full Version : Differential Reccomendations
23-05-02, 04:49 PM
Hi im just wondering is anyone can reccommend a good 2nd hand diff for a 2.6 GH Sigma.
It needs to be something that is able to transfer something around the 350-450hp range, and obviously a LSD. Im just wondering if there are any diffs on cars out there that are big enough and have a similar ratio to the one on the Sigma. THanx ppls
get a mini spool on the centre.. cant go wrong.
Until you start breaking axles that is.
23-05-02, 07:06 PM
The standard diff is not up to the task. Welding it up will only shorten the lifespan.
The cheapest would be the jap diff out of a scorpion which should bolt up if you get a GH scorp unit (I put a GK Scorp into GH which required some mods). LSDs however are not readily available.
Standard sigma 2.6 ratio is 3.42:1
The best option would either be Borg Warner shortened from a Commodore or a shortened ford 9".
you may well find that pajero centres will fit in the scorpion housing.
27-05-02, 12:32 PM
i've seen a borg warner setup made..
the original diff is a small type borgwarner.. you'll find, its the same as a cortina diff.. infact, i think they will bolt in vice versa.
whats done in a conversion is that you get the tubes cut off the orignal housing, and welded onto a larger borg warner center bit, so you can put the standard type centre in (with 4 pinnion/lsd), and run 28 spline axles.. obviously the axles need to be custom made...
I know that conversion costs approx $1200. and you run your brakes
you could also enquire about a hilux diff made up..
If you spend an afternoon at the wreckers with a tape measure, you'll probably find a Hilux/Hiace axle that's about the right size to fit in a Sigma. I did this a while ago to find a suitable donor for my 77 Celica, and I found a pretty wide range of sizes easily available. If you can find an axle that doesn't need to be cut down, you'll save yourself HEAPS of money.
I dunno if it would fit, but an R200 LSD would do the trick.
There is a guy in the states running an Buick turbo pulling low 10's with the R200....cant kill 'em
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