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Cusco Tarmac Center Diff 65:35 torque split

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Old 23 March 2004, 01:09 AM
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RT
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Default Cusco Tarmac Center Diff 65:35 torque split

Any experience on the above?
I would imagine the car gets a more RWD bias if you replace a std viscous center diff. Any one running with this config?

cheers.
Old 23 March 2004, 05:46 AM
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prana
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Originally Posted by RT
Any experience on the above?
I would imagine the car gets a more RWD bias if you replace a std viscous center diff. Any one running with this config?

cheers.
I have seen this come up a few times and I am also interested to know Not sure where to buy it from for a decent price though, they are very costly !
Old 23 March 2004, 09:19 AM
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RT
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Price is around JPY144000, as advertised in Hyperrev Japanese magazine. Expensive yes, but probably cheaper than a full DCCD install and far less trouble.

Question is, does it give the same end result?
Old 23 March 2004, 10:44 AM
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beryllium
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i confirm:less expensive than full DCCD.
have a look to www.rallispec.com .they supply and have good prices
Old 23 March 2004, 02:12 PM
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EMS
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Please note this is an open diff, it requires at least a good (plated) rear diff to avoid massive wheel spin!

Mark.
Old 23 March 2004, 02:53 PM
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RT
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"Please note this is an open diff, it requires at least a good (plated) rear diff to avoid massive wheel spin!

Mark."

Mark, which are you saying is the open diff? The Cusco 65:35 Tarmac diff, or the DCCD?
If its the Cusco diff, why and what makes it an open diff?
cheers.


EDIT:
Is it an open diff with a torque "biasing" function? ie if there's no wheel spin, the torque is 35% front 65% rear. But if there's the front wheel spinning (say), the torque is STILL 35% front and 65% rear - the spinning axle doesn't actually "drag" the other axle along, as is the case with a viscous LSD?

Last edited by RT; 23 March 2004 at 02:57 PM.
Old 26 March 2004, 12:05 PM
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EMS
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The Cusco is an open 65:35 diff that will send 65% of the torque to the back wheels and 35% to the front assuming there is no wheel spin! There is no LSD to do some "torque biassing". If you have wheel spin on any side (most likely at the rear because of that becomes the most of the torque!) you loose acceleration.

Mark.
Old 26 March 2004, 12:11 PM
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Turbo Dave
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I have a cusco diff fitted to mine and its not very good on tarmac at all!!
You have to welly it round corners otherwise it clicks almost like a wheel bearing going.
Very irritating when your in traffic and have to go slow but great at churning up grass and mud
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