jdm_cody.fdMay 25, 02:15 PM

Limited Slip Differentials: Helical (Torsen) vs Clutch-type (1.5-way) for FWD track setup.

Upgrading the differential on my track-only Integra. Currently running an OEM Torsen helical LSD. On tight corner exits, if I drop a wheel on the curb or lift the inside tire, the Torsen behaves like an open diff and spins the inside tire. Will a Cusco 1.5-way clutch-type LSD solve this, and what maintenance headache am I signing up for?

Discussion

4 comments

cole_e30May 27, 09:14 AM

Torsen differentials require torque on both wheels to multiply. If one wheel has zero traction (airborne), the multiplication factor is 0, so it spins like an open diff. A clutch-type LSD will keep locking regardless of wheel contact.

florida_man_garageMay 27, 05:51 PM

Be prepared for the steering wheel feedback. A clutch-type LSD on a FWD car pulls HARD under power. It takes some muscle to hold the line compared to the smooth helical Torsen.

vegas_drift_v8May 27, 11:42 PM

Maintenance is definitely higher. You'll need to change da differential oil every 3-5 track days with specific high-friction LSD oil, otherwise the clutches will chatter and wear out fast.

cooper_r1tMay 28, 02:50 PM

Go with the Cusco 1.5-way. The clutch packs are preloaded with springs, so even if a tire is completely off the ground, it will still transfer power to the outside wheel. It changes the car's corner exit speed completely.