hey guys just having a headache here i've got b120 ute.i've purchased an r31 diff and wanting to get it cut down to size but i want and inch and a half each end so i can put fatter(width)tyres on the rear any help would be great

Hey robdog i have a r31 diff in my 1200 ute thats 1 cm shorter either side ,it can be done just tell the guy whos doing it that you want it shorter than the 1200 diff. The only problem i found about doing this was you need almost zero offset wheels to fit nicly that means chasers are out of the question unless you want to run bolt on spacers. im running 15x8s with 195s and a offset of +4 and man its a tight fight but looks awsome

thanks dat82,but i was thinkin of adding inch each side so i could run wider tyres and pump the gaurds a tad,what you reckon?any advise will help or opinion thanksyou

The normal method is to switch short for long axles and cut a foot off the long axle. This means the axle has enough diameter to cut a new spline. If you want to shorten both axles it will cost at least $100 more, and will likely need another long axle to be bought.

You can't shorten the axles only an inch, you can shorten them 3+ inches because that is past the undercut after the factory cut spline.

so can one side be used and then just get one axle cut down ,and roughly how much will it cost to get a complete diff shortened ?

a blokes doing me for $1200 (r31 diff)yeh i just want it 2 inches longer than standard so i cane have room next to me rails

datodude is spot on with his explination , if you do all the assembly , the fabrication and machining should only cost around $650.00+gst, WARDS

+1 for what dattodude sayed, $1200 i got mine shortned for $700

yeh $1200 is the purchase of the diff,shortened and re-splined with some sort of brake setup(disc)

The worst of the labour is cutting all the #OOPS#ty brackets off.
The machining is fiddly and chews through the cutting tools at a fast rate.