Rear Diff Opitons?
#1
Rear Diff Opitons?
The S4 TII diff in my car is making noise that making me worry a bit. So I was wondering what I could do. If it was possible to install the LSD from a FD into the S4 case. The Torsen style seems to be a good happy medium to what I have read. Any help would be great.
#3
Money talks-mine says bye
iTrader: (18)
And for good reason, a Torsen is a decent solution, but a clutch type diff is superior since it's tunable. If you are really that broke , and can't afford new clutch disks, there are informed people that will buy your S4 TII diff and make your swap to a Torsen cheaper.
#5
Sharp Claws
iTrader: (30)
you might find an FD owner willing to trade you straight across for 3rd members.
whining is worn bearings, either the bearings themselves or they are worn to the point that the gear pattern is off enough to cause gear runoff, which will cause moaning noise under load or decel and possibly both. rebuilding it properly will cure the issue.
whining is worn bearings, either the bearings themselves or they are worn to the point that the gear pattern is off enough to cause gear runoff, which will cause moaning noise under load or decel and possibly both. rebuilding it properly will cure the issue.
Last edited by RotaryEvolution; 10-25-11 at 08:00 PM.
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#10
Sharp Claws
iTrader: (30)
bearings, shims and crush sleeve, seals, etc for the rest is about $335 for a total overhaul in parts not including the LSD portion of the unit. yes they do get quite pricey which is why some people opt away from the clutch type LSD.
not that everything needs to be replaced but you have to expect that worst case it can be close to $1200 to fully rebuild one of these diffs.
not that everything needs to be replaced but you have to expect that worst case it can be close to $1200 to fully rebuild one of these diffs.
#14
Living on the North Coast
iTrader: (31)
There is not a lot of inexpensive options out there other than a used S4 or S5 setup which could be worst that what you have now. With the smaller n/a differential you can at least find a Torsen unit out of a later Miata but those have gotten expensive over the years due to Spec Miata racing.
On a completely different note... I know the V8 guys have found a way to install the Ford 8.8 IRS in their cars, but that is not cheap either. Then again they don't have much of a choice considering the amount of torque they have to deal with and general lack of lower gear ratios in the stock T2 differential. With the Ford 8.8 IRS they also have a lot more gear and LSD options.
Interesting reading though;
http://www.norotors.com/index.php?topic=5084.0
On a completely different note... I know the V8 guys have found a way to install the Ford 8.8 IRS in their cars, but that is not cheap either. Then again they don't have much of a choice considering the amount of torque they have to deal with and general lack of lower gear ratios in the stock T2 differential. With the Ford 8.8 IRS they also have a lot more gear and LSD options.
Interesting reading though;
http://www.norotors.com/index.php?topic=5084.0