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There you go. All I know is they can be the nearest thing to the mechanical lock AWD L series system. There’s a few fellas over here running the dccd in their off-roaders. How long they last is yet to be seen though. That said I guess you don’t run them at 100% duty cycle for lock all the time while offroad - only as you need to. Cheers Bennie

That combo runs fine using 25D management. GD

I do not. It is purely mechanical differential and can ONLY ever transfer a 50/50 split. viscous coupler is a mechanical device. I've held them in my hand numerous times, replaced them etc....I know what they are, and what they aren't. And what they are not is a variable torque distrubution device in any conventional sense. they are a LIMITED SLIP, not a locker and not capable of transfering any more or any less power than the balance of traction on the ground allows. The viscous coupler only works to limit some power LOSS, not to add any MORE bias to the front or rear when all 4 wheels are on the ground. When you loose traction it's more like 95/05 % split to whichever wheel gas least. Regardless of front or rear. DOES NOT MATTER THE MODEL if we are talking 5mts with the 1:1 transfer gears. it's "limited slip" abilities are negligable. it's a mechanical open diff and yes the fwd slot on your car is vestigial.

it's only on AUTOMATIC trans cars. those use a hydraulic transfer clutch. the have a TCU the manuals have a purely mechanical, non-electronic, differential that is essentially open. Bad translation or wishful thinking. The viscous center cannot "lock" it does transfer some force to the non-slipping end when opposite end slips (wheelspin)......but cannot "lock" And if you have a no traction situation for just one wheel, all the force will go there. the viscous unit cannot transfer anywhere near full force when one wheel has no traction, to drive out of a ditch or sunken in snow. It does not "lock" It's also again not electric and there is no FWD mode or fuse or TCU.

The FWD fuse is kinda the smoking gun in my mind. Could not exist with a mechanical diff.

I used an old piece of mustache bar and welded it to the stock crossmember to support the front. For the rear I built a crossmember that bolts to the radious rod blocks and welded the stock mount to that. You can see the crossmember I built in the pic below before I welded the diff mount to it.

Are you using a bleeding pump or is your buddy/wife pumping the brakes while your in the wheel well releasing the fluid?