identifying vk diffs

[vh-holden]

I want to get a set of 4.11 gears for the diff in my vk wagon. how do i tell what diff it is and then what gears do i buy?

gotta get a 17 somehow!!

 

[GreenGremlin]

flange on diff with 4 bolts to tailshaft = borgwarner (is also cast into underside of the diff housing)

small salisbury (octagonal rear plate with bolt) common in 202s, normal yoke that takes u-bolts

big salisbury 10 bolt (almost tear shaped rear coverplate with bolt), normal yoke that takes u-bolts)

getting 4.11s is easiest on a borgy diff as Fords used them too. dont bother rebuilding it unless its got 28spline axles.

 

[Immortality]

if it is a borgwarner diff then it will be a 2 spider center with 25 spline axles. this will fit 4.11 gears but the center isn't that strong really.

 

[vh-holden]

thanks for the replies. here is a picture. i'm still confused

 

[vh-holden]

i'm guessing small salisbury.

 

[SL/ENUT]

You've guessed right chief, that is a 8 bolt "small" Salisbury diff.

 

[vh-holden]

thanks!! so i suppose, the next question i should ask is, how hard is it to get 4.11s for it, and is it worth fitting them?

 

[SL/ENUT]

Don't think they made a 4.11:1 ratio for those, i know the bigger 10 bolt diffs had 4.44:1. I think its better finding the BW78 diff out of a VK and using that.

 

[vh-holden]

hrmmm, might have to wait.

a mate has suggested getting a pintara diff. would that help?

 

[Huitzi]

You will need the vl diff housing and the pintara center, pintaras came with 3.9's and 4.11's 25 spline but skylines are 3.9 and 28 spline centers, + when you get the VL borgy diff don't forget to grab the tail shaft to go with it as your Salisbury one wont fit.
I hope this is some help