CF Bedford Van

[vs ss]

V6=m78 b/w 28 spline centre.
V8=m86 Dana 30 spline centre.

[Holden202T]

ok right, I've never found that differentiation on the net so thanks!

im interested to know now it sounds like most of the people that have had the noisy diffs have been the M86 .... hopefully that is the case

it also means I should be able to remove that CV shaft flange and put a normal M78 flange on it!

[brindo]

If they are an M78 inside, that opens up a range of cheaper centres like the Tru Trac.

[immortality]

That is good news indeed.

[Holden202T]

mind you it looks like Truetracs for M78's are dearer than for M86's

[WraithGTO]

It has been a excellent Build thread to read.
It good to know , with some slight mods . The commodore parts are fitting.
The M86 is a multi plate diff.
If you need any info , for the crewman diff. I have most of the info for them .

[Holden202T]

Thanks mate, and yeah I like that most things fit pretty easily with minor mods!

I've seen an exploded diagram of a M86 and wondered about that!

any info you have on the M78 crewman diff I'd welcome

[VK_3800]

M78s use the exact same centres as M75s, so no cheaper options there sorry. The crownwheel is slightly larger outside diameter only, inside and bolt pattern is the same.

M86 is listed for V8 VY/VZ one tonner and live axle crewcab as far as I can make out, the AWDs had M70 front and M78 rear.

[Dylan]

It has been a excellent Build thread to read.
It good to know , with some slight mods . The commodore parts are fitting.
The M86 is a multi plate diff.
If you need any info , for the crewman diff. I have most of the info for them .

Any chance we could get a look at that info? I have a M86 in mind for a future project.

[Holden202T]

Ok so diff updates

I got the axles out and measured them up and confirm as per above they are 95mm difference in length.

WP_20151013_21_21_41_Pro.jpg

so the bearing part of the axle is about 5mm larger than the VN-VS axles, and interesting to see they have the ABS sensors on the axles outside of the diff housing now, these could surely be used as a speedo sensor if needed I reckon!
Also the flange has changed to an almost square pattern.

WP_20151013_21_22_18_Pro.jpg

so I butchered the stock Bedford diff and cut off the spring mount and the shock mount.

WP_20151018_002.jpg

exhibit A

WP_20151018_001.jpg

so in the below picture I have located the diff where it will sit on the driver side, and the passenger side is 95mm short of the leaf spring, to give me an idea of how its all going to sit.

WP_20151018_17_38_31_Pro.jpg

wheel kinda looks too small, also I think some lowering would help things!

WP_20151018_17_38_08_Pro.jpg

and I reckon the offset is spot on and its pretty much the same space from the guard as the front wheels so it will look right!

WP_20151018_17_39_26_Pro.jpg

so now I just need to get myself another diff, I have found one local that is V6 Crewman 3.08 LSD so hopefully find out Monday if I can get it or not and then i'll be on the home stretch with this conversion!

I'm debating too, weather I shorten the driver side 10mm or so, I can cut that much off the spline of the axle and have it still go in without bottoming out, so might do that but will lengthen the passenger side first and see where it all sits then decide on that part of it!