Thread: HLSD issue?

Having a little trouble with my new 6 speed only spinning one wheel in the burnout box. I've had people say that the diff is going but it's a clutchless differential. I'm having some trouble launching the car straight as well on slicks. On street tires it spins both wheels and doesn't pull either direction.

With the HLSD I know that if one wheel unloads it acts like an open diff, correct? Is it possible that the burnout box isn't level? I do have my control arms preloaded very heavily and wonder if that's part of my issue.

For those that don't know, this is a track only drag car with a spec v six speed. 24.5x9 slicks. It pulls 1.7 or better 60's all day long but is just a handful to drive off the launch and it would be nice to be able to heat up both tires in the water box.

alignment?

It's possible that it may be off a little but one wheel spinning is what I don't understand. I guess if it's off bad enough it could unload one tire more than the other...

are you sure both tires are getting wet when you get into the burnout box?

It will break them loose regardless.

I haven't put my 24.5 slick on since the 6spd swap but my cars spins both tires(toyo r888) on the street and the track. My car spins 1-2-3 gears and tq steers like crazy top of 3rd when it hooks. I was surprised at the tq steer with the hlsd. Can the hlsd fade over time like the vlsd?

As for your issue what tire pressure are you running. I know if my pressure is off on one side it pulls to the side more. What about tire wear? Do you have any video of the car launching and burning out?

A HLSD will only transfer a percentage of the torque when one wheel spins. It may be that the percentage isn't enough to break the other tire loose.