I have a 4.1 ratio torsen diff in my mk1 turbo track car.
The diff feels great most of the time. However, when sliding the car at low speeds (and in very low traction situations), I can feel the diff opening and closing. I know this is an inherit problem with helical / torsen differentials and there is nothing that can really be done to prevent this.
I’m a considering swapping to a 3.6 ratio as the gearing on the 4.1 is too short for my liking. First gear is basically unusable and given that the car is pushing some good power, I feel that it would benefit from a different ratio.
Long story short… when swapping the diff, I am considering fitting a plated “clutch” style lsd. Something like a kaaz or mfactory unit. I’m not put off by the potential clutch chattering in car parks as the car is almost solely a track car at this point.
Has anyone had any experience with clutch type diffs in their mx5s and if so are there any recommendations or reviews for different brands? Any / all advice or input welcome.