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Old 09-05-2006, 11:12 PM   #10 (permalink)
MauiJim
New Member
 
Join Date: Sep 2006
Member Number: 5478
Posts: 15
Re: Here is why part time 4WD should never be used on dry pavement

Quote:
Ridge111 previously said:
Isn't it saying that if you have a center diff and it isn't locked then it's ok?

"...and center differentials have been employed since then to correct the problem"

"The extreme tension and pressures caused by the absence of a center differential (or caused by a center diff that has been locked)..."
EDIT: Gah, ^^ bigbill beat me to it!

I was wondering the same thing-- and yes, as long as there's a center diff to deal with differing driveshaft speeds in turning (and it's not locked), then you should be fine. For example, Subaru all wheel drive works this way-- it's full time with an unlocked center diff (well, if you want to get techical, all the diffs are unlocked, but the focus here is on the center diff).

I thought both MT and AT FJs would have the same drivetrain-- but the MTs have the limited slip Torsen center diff, and as such are full time 4WD. Auto trans FJs don't have a center diff (only a 4WD transfer case) and therefore can't be used on dry sufaces (where no slippage is allowed when turning).

I agree that it may be blown out of proportion a bit, but seeing that pic of the grenaded transfer case should be enough to convince AT owners into shifting back to 2WD
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