Mopar Muscle Association UK

Posted: **Sun Jun 27, 10 7:22 am**

It's an OZ unit used in some Holdens.MG used it in their V8 Rover 75. Essentially a vane type hydraulic pump in the diff.

Posted: **Mon Jun 28, 10 1:18 am**

jerry, it is a viscous diff, works the same as a torque converter, when one side looses grip it transfers power to the other axle hydraulicaly, with it been fluid drive it does not wear out like a normal lsd, just have to keep the oil cool in them

Posted: **Mon Jun 28, 10 1:22 am**

spent the weekend measuring and cutting, have removed the rear chassis legs, will put new rails in from torsion bar crossmember,ready for new suspension.

Posted: **Mon Jun 28, 10 9:25 am**

Awesome work Paul

Great to see cars like this and Tazet's Charger being brought back from the dead.

Posted: **Mon Jun 28, 10 10:48 am**

BTR are the company that became www.SpicerAxle.com.au

formerly Borg Warner Austrlia

UK agents were BPW the artic trailer people

make diffs in the 7 3/4 to 8 1/2 inch sizes

3 types

Hydratrack
Integral cone slip resistant
and seprated Cone Slip resistant centres

the later two are the type that Bacca really doesn't like

in either beam axle or IRS configuration

everyone on here says they are all rubbish as often their only exposure to BTR products is the open version of the m78 used in valiant chargers

and in that form they are fragile

although i'm sure anyone with a modern monaro or holden truck
a late model ford falcon
a nissan skyline
a lotus carlton
a TVR
a Marcos
a Morgan

will say yeah they have the faults but, i aint had an issue..........

http://www.spiceraxle.com.au/products.htm

M90 looks nice

Dave

Posted: **Mon Jun 28, 10 12:28 pm**

Great Read this ...need more , need more

Posted: **Tue Jun 29, 10 7:31 am**

Nice work there 74Challyman!

Will you be using a Hauser back half Kit?
Had one in my dart and its a real good fit and finish.

How does this sort of work fit in with currnet Mot REGS?

Bacca

Posted: **Wed Jun 30, 10 1:52 pm**

Just caught up with this thread.
Fascinating stuff, thanks for taking the time to post it all

It is amazing what can be saved

Posted: **Mon Sep 06, 10 5:09 am**

update on progress,not done much due to other priorities, frame rails are in and started to build up the rear frame and suspension pickups,

did some research on the btr differential which i was going to use at first on a n/a engine, and now with the extra power decided to go with the viper diff.

Posted: **Mon Sep 06, 10 5:14 am**

finished suspension pickups on one side, just need to fab up some upper arms.will get some better pictures and clean off the bog dust, when i can get round it

Posted: **Mon Sep 06, 10 5:21 am**

rear wheel mounted, this will be the finished ride height , have left enough clearance arond frame for wider wheels, these are 10x19 with 285 tyres will go to 315 or 355, dont really want to raise it as the way i have angled the upper and lower arms the centre of gravity is 1 inch above ground height.

Posted: **Mon Sep 06, 10 5:23 am**

viper rear diff, this is also a viscous diff like the btr. just need to alter the mounts a little.

Posted: **Mon Sep 06, 10 4:44 pm**

Some very good work going on there, always interested to read your updates, great to see someone really going for it.

Posted: **Mon Sep 06, 10 9:19 pm**

Many people dream of doing a build like this but never finish (or even start) it.

So many in fact that I wondered if you were yet another dreamer.

Boy was I wrong.

Really good work. Looking forward to seeing this car finished. It is going to be a BIG hit with the magazines etc. and a Nats Winner for sure.

Posted: **Mon Sep 06, 10 10:13 pm**

Awesome

Mopar Muscle Association UK

restomod challenger