be warned ! vl commodore turbo and skyline lsd are different to vn commodore lsd in that the offset where the crown wheel bolts on varies this kinda means you are stuck with a tall ratio if u use the vn type hemisphere (3.08) where as the vl turbs(3.45) ans skyline(3.69) are better suited,

interesting, so why did someone with a commodore buy the gears from my skyline diff?

yes IRS commodore and falcon diff centres fit, and i can probably get a 28 spline LSD for $100, buts its for me

perhaps he didn't know, and is going to find out the hard way like i have!

VL Turbo is 3.9. LSD 28 spline.
VL 6 cylinder is 3.45 non-LSD 25 spline.

Both VL Turbo and Skyline Sillouette Diffs are the best choices for Datsun conversion diffs.

talking to my commodore friend

the gears work for commodore people, as they are all the same offest apperantly
just we cant use the centres out of commodores
so it must be the housing is different offset too

mate of mine had the same problem with his r31. he bought a comodore lsd, but apparently you can make it fit if you get some shims made.

talked to commodore mate

he is running a vn LSD centre in a VL diff with VL gears, 3.45

all centres for VL V8 and VL turbo till VS(including IRS) are the same diff centre
all gears area also interchangable from R31/VL so VS commodore

so unless its only the skylne diff thats different i dont see why it wont work
even if it is only a matter of shimming the centre, which any diff shop should be able to do

I'm jealous
What did you get the LSD centre from, a EA/EB falcon or Skyline?

the R31 silhouhette (spelling) had the LSD standard i think. and the stud pattern is still 114.3 same as datsun, rather than the 5 stud commodore/falcon diffs

And the diff looks very nice good work mate!!

centres are the same though

its easier to find a smashed falcon or commo than it is to find a skyline lsd

is it true you only have to shorten one axel, if so i might just have to shorten my r31 diff

centres are different from what i've heard. different number of splines needed to go into a falcon one... daveman has tried this before

I think:
r31 28spline
commo/falcon 25spline
falco/commo v8 28spline

so why did skylines have 28spline when 25 was enough for the heavier, more powerful holden/ford sixes?

Re: Spline count

Falcons ran 25spline up until EB series 2 then went 28.

Commos seem to only be 28 in the V8's + VL turbo.

Yes, I am looking for a 28spline LSD. If you see one for $100 or less, let me know.

There are 2 different length axles in the diff.
Shorten the housing, swap the short to the previous long side and cut/re-spline the long one for the new short side. (I just confused myself)

Saves mod'ing 1 axle. Of course doesn't work in all setups.

Open to other sources of 28spline LSD centres.

Do the IRS commo's run a borgW centre?

tell me how you hooked the handbrake up if its going in ya ute

For 28 spline centres try Vn onwards they are all 28. So too are you xr8 and xr6 type axels and later ford centres.
Pretty sure independant have same centre.
Dont think all skyline diffs were 28 spline, only silhouette and the later model version as the BTR78 diff was only produced from 87/88.

R31 had 28 splines, VN V8 had 28 splines, pintara 25 splines (but you can use the crown and pinion)
stocko R31 open, silhouette & VN V8 had 4 pinion LSD, i had to put my calipers on the front side, it's alot easier with the handbrake cables, on a 1200, handbrake cables go backwards which make life easier

is that torsen or clutch style lsd??