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Old 07-23-2008, 09:15 PM   #62 (permalink)
Supercar
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Default Re: New SCE AWD Center Differential!

Quote:
Originally Posted by Barefoot View Post
I would think the new center diff would actually make TC problems worse seeing how on a launch, the center diff may send up to 90% of the power to the rear wheels through the TC.

Of course this would only intensify the high HP problems with the TC, not the recall issue.
These are the current TC problems:
1) Locks up when it is run without oil.
2) Breaks when someone welds the center diff locked and then dumps the cluch.

Do not mix the two issue or lump them together.

The first issue will not be affected by the new diff. If the t-case locks up, the rear wheels lock up, and the car goes into a tail spin. It does not matter what the center diff is doing, it's simple.

Second, the guys who want to get good drag launches have been welding their center diffs locked. A welded diff would send up to 100% of power to the rear wheels if the front wheels start slipping. This diff would send only 80% (not 90%). Still, that could be a lot of HP, and a talented clutch operator can still greanade the transfer case. But at least he now would have a diff that is not welded, and he can drive around town with it. And the thing is, these cars will never pop wheelies, so they do not need 100% of power at the rear wheels. An 80% is a good number to divide the traction between the front and the rear.

Guys who break reinfornced t-cases with the stock VCU's usually have cars that are too heavy on tires that are too sticky. A different diff would not help in this case. Either lighten the car, or try to be gentler with the clutch.

Philip
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