I had a Truetrac diff from Detroit Locker installed a couple days ago. The Truetrac is a helical gear type limited slip differential.
Here's a link to the original thread on the Truetrac.
Here's a link to the Truetrac page on Detroit's website.
I've driven vehicles with all kinds of limited slips and lockers. Mechanical and viscous LSD's, automatic and ARB lockers. The Truetrac is far and wide the most amazing limited slip I've ever experienced. After 2 days with this diff I'm absolutely in love with it. It's as smooth and invisible as an open diff when putting around, and I almost can't tell the difference between it and a locker when I push the go-fast pedal.
I removed the OEM electronic locking rear diff (an open diff) to install the Truetrac. I can tell you this - if you're on the fence about getting the TrueTrac because you don't want to give up your OEM locker... get the Truetrac. It has all the traction of the locker when locked, all the street manners and ease of use/low maintenance of an open diff, and makes for great around-town driving.
I went to my favorite off-camber uphill dirt hill today to get one rear tire up in the air. Normally, with an open rear diff, as you unload one tire it'll start spinning (as it loses traction). With the Truetrac, I couldn't tell that the unloaded tire was off the ground. I had my big tow mirrors pointed down at my rear tires (which stick out nicely from the fenders), and I couldn't see a speed difference between the two. It felt just like a locker.
A couple other tests I've done -
Accelerate in a straight line on damp pavement, leaves two black marks.
Accelerate hard around a corner - kicks out the back end, feels close to how a locker feels around a corner. Very easy to steer with the throttle.
Accelerate hard with one tire on dry pavement (maximum traction) and one tire on packed dirt/moss/sand (minimum traction, off the road). I've done this test probably 30 times, at all different throttle levels. I can tell if the tire in dirt spins by the look of the ground afterwards (torn up, lightly disturbed, undisturbed, etc.), and I can tell if the on-road tire spins by the barking sound. This Truetrac is so close to a locker, it's unbelievable. I can't spin the off-road tire at all without hearing the on-road tire spin.
I can take off at partial throttle, and just take off - neither side spins. At a certain power level, the rear end goes from neither side spinning to both sides spinning. On an open diff, the tire with minimum traction (the off-road tire) would spin like crazy and the on-road tire would just sit.
I haven't had my SLIP light come on since the installation of the Truetrac. The SLIP light illuminates when the ABS system senses a difference in rotation speed between the left and right rear wheels and activates ABLS.
It's definite - I'm not going back to the locker.
Here's a link to the original thread on the Truetrac.
Here's a link to the Truetrac page on Detroit's website.
I've driven vehicles with all kinds of limited slips and lockers. Mechanical and viscous LSD's, automatic and ARB lockers. The Truetrac is far and wide the most amazing limited slip I've ever experienced. After 2 days with this diff I'm absolutely in love with it. It's as smooth and invisible as an open diff when putting around, and I almost can't tell the difference between it and a locker when I push the go-fast pedal.
I removed the OEM electronic locking rear diff (an open diff) to install the Truetrac. I can tell you this - if you're on the fence about getting the TrueTrac because you don't want to give up your OEM locker... get the Truetrac. It has all the traction of the locker when locked, all the street manners and ease of use/low maintenance of an open diff, and makes for great around-town driving.
I went to my favorite off-camber uphill dirt hill today to get one rear tire up in the air. Normally, with an open rear diff, as you unload one tire it'll start spinning (as it loses traction). With the Truetrac, I couldn't tell that the unloaded tire was off the ground. I had my big tow mirrors pointed down at my rear tires (which stick out nicely from the fenders), and I couldn't see a speed difference between the two. It felt just like a locker.
A couple other tests I've done -
Accelerate in a straight line on damp pavement, leaves two black marks.
Accelerate hard around a corner - kicks out the back end, feels close to how a locker feels around a corner. Very easy to steer with the throttle.
Accelerate hard with one tire on dry pavement (maximum traction) and one tire on packed dirt/moss/sand (minimum traction, off the road). I've done this test probably 30 times, at all different throttle levels. I can tell if the tire in dirt spins by the look of the ground afterwards (torn up, lightly disturbed, undisturbed, etc.), and I can tell if the on-road tire spins by the barking sound. This Truetrac is so close to a locker, it's unbelievable. I can't spin the off-road tire at all without hearing the on-road tire spin.
I can take off at partial throttle, and just take off - neither side spins. At a certain power level, the rear end goes from neither side spinning to both sides spinning. On an open diff, the tire with minimum traction (the off-road tire) would spin like crazy and the on-road tire would just sit.
I haven't had my SLIP light come on since the installation of the Truetrac. The SLIP light illuminates when the ABS system senses a difference in rotation speed between the left and right rear wheels and activates ABLS.
It's definite - I'm not going back to the locker.
