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I'm using a VB/VH salisbury and i have it sitting on the springs and trying to work out how to mount it correctly. I was thinking of using 50mm box tube to make the saddles but i need a way of housing the bush's ?

Can't you just use the old saddles off the old diff ? I normally use them and the bump stops.

Or at least copy them, making them deeper to incorporate the lowering at the same time, Trev .

I would but the original diff went in 1985 and the HR diff is out on the floor next to it ready for its new owner . I think they used a pressed metal bush holder originally and i was thinking i could make up some out of 65-75mm box cut to shape .

Run a holesaw through the long face of some 75x50x5 RHS .
Use a holesaw the same diameter as the axle tubes.
Trim through the center of the hole.
If you offset the hole a bit you can lower it a bit as well.
To lower it more use a bit of 100x50x5 RHS instead.

Go slow with the holesaw using plenty of pressure and use plenty of lube or you will burn the holesaw out.

If you mark it out carefully you could use a grinder or an oxy.

It depends on what you have at hand.

wot179 wrote:Run a holesaw through the long face of some 75x50x5 RHS .
Use a holesaw the same diameter as the axle tubes.
Trim through the center of the hole.
If you offset the hole a bit you can lower it a bit as well.
To lower it more use a bit of 100x50x5 RHS instead.

Go slow with the holesaw using plenty of pressure and use plenty of lube or you will burn the holesaw out.

If you mark it out carefully you could use a grinder or an oxy.

It depends on what you have at hand.

Great idea, i was thinking something like that would work , now my springs are 50mm wide so should i use 65mm or wider rhs ?

50 is spot on.
That way the vertical face of the saddle doesn't overhang the spring.
Drill the hole for the locating nut on top of the leafs neat and bolt them up without the rubber.

Use HQ -WB ute or van baseplates too.HR baseplates will bend if you are only using U bolts.
You will never bend HQ baseplates.

FCOV6 wrote:I'm using a VB/VH salisbury and i have it sitting on the springs and trying to work out how to mount it correctly. I was thinking of using 50mm box tube to make the saddles but i need a way of housing the bush's ?

does this diff fit or did u get it shortened thanks

willie wrote:

FCOV6 wrote:I'm using a VB/VH salisbury and i have it sitting on the springs and trying to work out how to mount it correctly. I was thinking of using 50mm box tube to make the saddles but i need a way of housing the bush's ?

does this diff fit or did u get it shortened thanks

Fits perfectly, i bought a set of BMW hotwire style rims but the offset is wrong so once i choose my wheels i will get standard commodore offset and they should be sweet.

If you haven't already made other arrangements Nick you could try these: http://cgi.ebay.com.au/&*#@-9-Diff-Spri ... 335de4eb82

I bought a set and they're good & strong. Much heavier gauge than the standard FB/EK ones. Only thing you have to do is enlarge the hole for the upper locating plate. Cheers

I forgot all about this thread.

I just noticed your pinion angle appears wrong too(it could be the angle of the photo,Im not sure)

To set it correctly,level the car on jackstands from front to rear.

The sill is as good a place as any to sit your level.Get it spot on so that your pinion angle can be accurately set..

Put a jack under the diff and jack it up till the car is almost lifting off the jackstands.

Point the pinion towards the ground about 3 degrees.

This angle can be a point of contention,some say zero degrees,others say 5 degrees,so be prepared for various opinions.

Pointing up is wrong.You will break unis for sure.

No doubt by this time its already fitted up,so I hope you got it pretty close.

wot179 wrote:I forgot all about this thread.

I just noticed your pinion angle appears wrong too(it could be the angle of the photo,Im not sure)

To set it correctly,level the car on jackstands from front to rear.

The sill is as good a place as any to sit your level.Get it spot on so that your pinion angle can be accurately set..

Put a jack under the diff and jack it up till the car is almost lifting off the jackstands.

Point the pinion towards the ground about 3 degrees.

This angle can be a point of contention,some say zero degrees,others say 5 degrees,so be prepared for various opinions.

Pointing up is wrong.You will break unis for sure.

No doubt by this time its already fitted up,so I hope you got it pretty close.

Yes pinion angle is wrong as its only just sitting in there for a trial fit till i make the brackets.

This is how it sits after dropping it back down on the ground, the front will drop a little more once i remove the 179 and drop in the buick V6. The BMW rims fit great at the front but just a little too wide for the rear without cutting out the lip or pumping the guards.