I had this noted down along with alot of other Datsun related info but my young block used it to colour in. Owell.
I chasing the uncut width face to face measurement on of an R31 Sillo Diff.
All info would be greatly appreciated.
Jake

are you talking about the diff housing on its own or overall width disc to disc????

Overall width disk to disk

I just measured mine and its about 1230mm wide. This was a pretty rough measurement as it is dark and I have had a few beers. But in saying that when I got my R31 diff shortened I got it 10mm wider each side than the stock diff. I did this so the wheels sat more to the centre of the wheel arch allowing me to fit slightly wider tyres. I got allot of help from PIGDOG with the measurements so you should shoot him a PM. My diff it in a 1200 ute if this helps.

Bundy is that a stock, untouch not cut R31 measurment?

Found the info, just spent 2hrs going threw PIGDOGS post.

un cut its 1452mm

No mate, mine is shortened. I followed PIGDOG's directions pretty dam close and am very happy with the out come.

thats without discs, 1465mm with discs

and according to my measurements it needs to be 155mm shorter to be stock 1200 width....which should be 1310mm or there abouts, so that was some nice rough measurements there bundy351

mmm if i can find a Oz supplier of the tomei coupe flares(or keep the IPRA approved ones i have on) i may not even have to shorten, but will have to bring the front out 17mm each side to match.
Either way i have to do some more searching for a diff.

hilux diff is only 1400mm according to a mate of mine who happens to have a hilux