14 replies to this topic

[yel327]

Also to answer your question about an LJ diff center fitting an LX, it depends on weather the diffs are long or short bolt centers. I think LJ 6cyl won't match up to an LX because of the above reason but don't quote me on that because it depends on the diff ratio as well

 

Correct, 2.78 and 3.08 carriers are different to 3.36-3.90 and the housing has the corresponding studs/threads for the carrier used in it.
 

[ribz0]

There is a long and short bolt diff but either can be used... I am changing my diff from 2.78 to 3.36 and had to use the short bolt type (3.36 center) as I was told that you cant just swap the 2.78 gears for the 3.36 as they wont fit due to the offset on that particular diff center housing.... I just have to use 2 short bolts where the long bolts were when fitting back to the housing... I just left it to the guys who know cause Im no expert...

Cheers

[S pack]

Putting a 3.55/3.36 into a 3.08/2.78 housing is easy as Eric has explained, just use two short bolts in leiu of the long bolts.

Two drain plug bolts to suit 3.55/3.36 diffs are ideal for the purpose.

 

Putting a 3.08/2.78 into a 3.55/3.36 housing isn't as easy. The short stud at the 7 o'clock position in the housing needs to be removed and a nut welded onto the inside of the flange. Best to take the diff housing out of the car to do this, better still get hold of a 3.08/2.78 diff housing and put the 3.55/3.36 housing in storage.

Edited by S pack, 01 August 2015 - 08:27 PM.

[yel327]

Going from a 20+ year old memory you have to modify the housing, maybe remove a stud or two? I removed my last banjo in the early 90's so struggling to remember, but someone here will know in a flash what is needed.

 

Edit - Brad beat me to it!

Edited by yel327, 01 August 2015 - 08:30 PM.

[yel327]

Standard is probably a 3.36 behind a 202 M20. 253 and 308 are probably 2.78 or 3.08 and most likely fine spline.

[yel327]

It is pretty simple:

 

HK-HG V8 banjo is coarse spline and uses a V8 yoke. Only ever available in 2.78 or 3.08 and very often LSD.

HK 6cyl 3.08:1 banjo uses a V8 yoke, but all other 6cyl banjos are 6cyl yoke. They are all coarse spline up until sometime in HX/LX from memory then they all change to fine spline. The exception is the last LJ XU1's with fine spline.

At LH release there apparently were some V8 banjos with coarse spline but I think these changed to fine spline pretty early on. All LH-LX V8 banjo will have a V8 yoke and fro memory they are all (or almost all) 2.78 or 3.08.

 

On top of this there is the different carriers:

 

2.78/3.08 and

3.36/3.55/3.90.

 

Early on the V8 banjos were made by Borg Warner (pretty sure it was Borg Warner) and they were all LSD and 2.78:1 and at some stage later GMH started to make them in both 2.78 and 3.08 and in LSD and non-LSD, however it is not 100% clear if GMH made the non-LSD version and Borg Warner did the LSD or if GMH did both. The 3.08 was always meant to be the 253 ratio, but it was introduced earlier than the 253 during HK around Monaro release.

[TerrA LX]

Also to answer your question about an LJ diff center fitting an LX, it depends on weather the diffs are long or short bolt centers.

 

Is the long bolt or short bolt you have to leave outside and for how long?

And

Does it matter if it is Sydney or Melbourne weather?