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The BEST AWD system that I've ever driven was my old Mazda 323 GTX. Kind of a unicorn nowadays and parts availability is non-existent, so hooning one at Rally-X might get expensive and frustrating. Wish I still had mine!

porschenut
porschenut Reader
2/5/22 8:39 a.m.
Slippery said:

I used to have an '87 Audi 5000CS Turbo Quattro with locking front and rear diffs and a manual transmission. 

The abuse that car took on dirt without breaking always amazes me. 

This. The old 5 cylinder quattro drivetrain was very overbuilt.  I was told 500 hp dump the clutch launches were no problem.  Having replaced axles in them and some subarus makes me agree. 

Pete. (l33t FS)
Pete. (l33t FS) MegaDork
2/5/22 9:07 a.m.
Paul_VR6 (Forum Supporter) said:

The haldex based vag can only do 50/50 at best and the programming varies wildly by model. The interesting vag cars that are awd carry a pretty hefty premium. 

Volvo can do 100% to one rear wheel... pretty sure VW can too, otherwise if the front tires were slipping the vehicle would not move.

Paul_VR6 (Forum Supporter)
Paul_VR6 (Forum Supporter) SuperDork
2/5/22 10:01 p.m.

Not sure how it can go over 50% without a center diff. 

rslifkin
rslifkin UberDork
2/5/22 10:09 p.m.
Paul_VR6 (Forum Supporter) said:

Not sure how it can go over 50% without a center diff. 

If it's got a clutch pack and can reach 100% engagement with 0 slip, you can get 100% power transfer.  A locked diff (or no diff) isn't 50/50 split as many people say.  It's equal rotational speed with whatever power split it takes to achieve that.  An open diff is 50/50 split, but if you have uneven traction, both sides still get the same amount of power (limited by the side with less traction). 

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