DIFFERENTIALS..or diffs

[HK1837]

Greg

Couple of fixes:

The "mythical" A9X ratio 10 bolt was 3.90:1.

3.90:1 banjo was optional on some Holden 6cyl, at least for HK-HQ. Not sure about exactly which models and series.

[ozbox]

Greg

Couple of fixes:

The "mythical" A9X ratio 10 bolt was 3.90:1.

3.90:1 banjo was optional on some Holden 6cyl, at least for HK-HQ. Not sure about exactly which models and series.

byron thats not what the race car guys say..but they are old and may be mixing up there numbers..

3.90 banjo was optional in utes and vans from books ive seen and also standard in 4 cyl lx torana..then the 3.9 crown and pinnion was used in the uc 4 cylinders.

--- Updated ---

Okay, one question for you...

This diff is a "Small" salisbury from a 6cyl WB built 4/80.



Why does it have holes in the ears??? is it the holes for the bushes???

and then this is also a "Small" salisbury from a WB built 8/83, this one has no holes in the ears.

the centre is a cast unit and the axle housings were pressed into it so if they had no non holed ear centres for ute/van they would use whatever they had..that centre could have been used in uc torana or vb commodore...holden didnt stop the production line coz they ran out of something particular..

--- Updated ---

The one with no holes is a ute diff, the one with holes is sedan diff. You can convert a sedan diff housing by welding on the leaf spring brackets.

correct in principle but they didnt have small salisburys in wb sedans..see above explanation..

[83 WB_Ute]

Rightio, you learn new things everyday... lol

[ozbox]

Rightio, you learn new things everyday... lol

yep.. i still learn something new everyday ..

[gypsy]

Pull the inspection plate and my sedan 10 bolt that is modified to fit my van must have had the centre changed as well as it is a 3.08 centre and not 2.60 2.78 which are usually a car type ratio

[adam perth]

HK 1837, i think the early ones from humpy to EJ were actually 3.89 stamped crownwheel. then later they were stamped 3.90 (i mostly pulled them out of 4 cyl toranas, mainly LX sunbirds.)

greg have you got a pic of the holden banjo with 2 longer bolts at the bottom for 2.78 / 3.08? As you know, always a good thing to look fo when buying rollers / cars to wreck with GU4 on ID tag and 2 longer bolts underneath cause it means $250 for the 3.08 centre.

the 2.6 diff was standard on the WB statesman, and thats the only place i have ever found them

[HK1837]

HK 1837, i think the early ones from humpy to EJ were actually 3.89 stamped crownwheel. then later they were stamped 3.90 (i mostly pulled them out of 4 cyl toranas, mainly LX sunbirds.)

greg have you got a pic of the holden banjo with 2 longer bolts at the bottom for 2.78 / 3.08? As you know, always a good thing to look fo when buying rollers / cars to wreck with GU4 on ID tag and 2 longer bolts underneath cause it means $250 for the 3.08 centre.

the 2.6 diff was standard on the WB statesman, and thats the only place i have ever found them

From memory 2.78 Salisbury was dumped late in HJ as it was too noisy. 2.60 was then used from that time instead. I'll find the document later today that states it (features manual).

--- Updated ---

This is probably a gumby question to some but can you put the LSD centre out of a WB salisbury into a HX salisbury, i know they are different sizes physically but are the planetary, internal, gears interchangable

Yes you can use the WB large salisbury internals in a HQ-HZ salisbury. Just remember that there are 2 x different hemispheres theough (LSD and not LSD aside). 2.6 and 2.78 share a hemisphere and 3.08, 3.36, 3.55, (3.9) and 4.44 share a hemisphere. So you can't use a WB 2.6 hemisphere with 3.08 gears for example. You must use 2.6 or 2.78 gears on it.

[hxbunny]

Yes you can use the WB large salisbury internals in a HQ-HZ salisbury. Just remember that there are 2 x different hemispheres theough (LSD and not LSD aside). 2.6 and 2.78 share a hemisphere and 3.08, 3.36, 3.55, (3.9) and 4.44 share a hemisphere. So you can't use a WB 2.6 hemisphere with 3.08 gears for example. You must use 2.6 or 2.78 gears on it.[/QUOTE]

Ive got a 3.55 out of a WB which is limited slip and a 3.08 HX single spinner and wanted to put the LSD components into the 3.08 diff if possible