Quaife differential purchase
There are three components inside the transfer case. One is the ring and pinion gear set that allows the power to change direction and head down the drive shaft to the back of the car. The second is the front differential. The third thing in there is the viscous coupler for the center diff (the center diff actually lives back inside the tranny).
The thing that most people break inside the transfer case is the spider gears in the front differential. Dude goes and practices his launches, gets some wheel hop and breaks the spider gears in the front differential. He goes to the dealership and they tell him he needs a new transfer case for $2k+. Thus the thinking that the transfer cases are weak. Some people have had trouble with the ring and pinion gears, but most trouble is with the front differential.
Busted Stock Front Diff
Mitsubishi had Getrag of Germany build the transfer case assembly for the EVO. This is normally a good thing since Getrag builds some nice stuff. But also Getrag has this thing about not selling service parts separate. Everyone always cries about this after the fact but how many of you axed about it before buying the car?
This front differential will give you better traction coming out of a corner, yes. But most importantly it will prevent you from busting up your stock weak front diff, or if you catch it right away allow you to salvage your transfer case assembly by replacing just the differential. You can buy this diff before or after you blow up your stocker. But you will buy it if you are going to have fun with your car.
Stock diff on the left, Quaife on the right.
More EVO Quaife Pics Here
Mike W
The thing that most people break inside the transfer case is the spider gears in the front differential. Dude goes and practices his launches, gets some wheel hop and breaks the spider gears in the front differential. He goes to the dealership and they tell him he needs a new transfer case for $2k+. Thus the thinking that the transfer cases are weak. Some people have had trouble with the ring and pinion gears, but most trouble is with the front differential.
Busted Stock Front Diff
Mitsubishi had Getrag of Germany build the transfer case assembly for the EVO. This is normally a good thing since Getrag builds some nice stuff. But also Getrag has this thing about not selling service parts separate. Everyone always cries about this after the fact but how many of you axed about it before buying the car?
This front differential will give you better traction coming out of a corner, yes. But most importantly it will prevent you from busting up your stock weak front diff, or if you catch it right away allow you to salvage your transfer case assembly by replacing just the differential. You can buy this diff before or after you blow up your stocker. But you will buy it if you are going to have fun with your car.
Stock diff on the left, Quaife on the right.
More EVO Quaife Pics Here
Mike W
Last edited by Mike W; Aug 16, 2004 at 11:50 PM.
I'll answer the part Quaife makes will fix the problem as it replaces the "weak" front dif (after we mod the stink out of the cars and put in clutches that will hold twice the HP we've added!) so if you didn't completely kill your t-case by driving it till it locked up or stared to whine due to ring and pinion wear it should solve the prob.
quote by Mike W
Mitsubishi had Getrag of Germany build the transfer case assembly for the EVO. This is normally a good thing since Getrag builds some nice stuff. But also Getrag has this thing about not selling service parts separate. Everyone always cries about this after the fact but how many of you axed about it before buying the car?
guess where the ring and pinion is...and who makes it.
Mitsubishi had Getrag of Germany build the transfer case assembly for the EVO. This is normally a good thing since Getrag builds some nice stuff. But also Getrag has this thing about not selling service parts separate. Everyone always cries about this after the fact but how many of you axed about it before buying the car?
guess where the ring and pinion is...and who makes it.
2 questions (for Robi or anyone else qualified to answer):
1) Would I need to upgrade my t-case with only 300-320 whp? (I would assume not)
2) Do I need to upgrade the t-case with a Quaife front LSD? (This one I'm not sure about)
Thanks in advance.
1) Would I need to upgrade my t-case with only 300-320 whp? (I would assume not)
2) Do I need to upgrade the t-case with a Quaife front LSD? (This one I'm not sure about)
Thanks in advance.
Delivery time is in about 3 weeks.
I asked around at different shops in the area and it looks like installation is going to be right around $700, and that if you were going to get your clutch done, then would be the perfect time to do it.
Originally Posted by steve_evo
Does the diff need to be re-shimmed to be aligned properly inside the t-case or is the install simply to remove and replace?
Mike W
Originally Posted by Chris in HB
2 questions (for Robi or anyone else qualified to answer):
1) Would I need to upgrade my t-case with only 300-320 whp? (I would assume not)
2) Do I need to upgrade the t-case with a Quaife front LSD? (This one I'm not sure about)
Thanks in advance.
1) Would I need to upgrade my t-case with only 300-320 whp? (I would assume not)
2) Do I need to upgrade the t-case with a Quaife front LSD? (This one I'm not sure about)
Thanks in advance.
1) You can bust up the stock front diff on stock HP if you are beating on the car and get wheel hop. Shock loads break the spider gears, not torque. You could 2make 600 wheel HP on a dyno and not kill the diff, but with 250 at the wheels and get some sharp grip/slip/grip and it will break.
2) I dont know what an upgraded transfer case would consist of other than a Quaife or other stronger front differential... no one makes any upgrade parts do they?
Mike W
Originally Posted by Mike W
The Quaife goes deep inside the shimmed part. Reshimming is not necessary as long as you only change the front differential and dont swap any other parts.