Gearbox and limited-slip differential

In short: The gearbox sits at the rear axle as a transaxle. The Turbo and S2 have their own versions. A limited-slip differential is listed as option M220 in our unverified decoder data and was standard on the Turbo S.

Turbo

The 1986–1988 Turbo uses gearbox type 016R with its own ratios (table). On the transaxle oil cooler the figures differ slightly: one says it became optional from 1987, another that it was deleted in 1987.

Turbo S

The Turbo S had a standard limited-slip differential with thicker inner plates and coated plates and shafts, plus a two-stage clutch damper.

S2

The S2 got a revised gearbox with ratios matched to the 3.0-litre engine.

Spotting wear

• Grinding when shifting into 2nd or 3rd points to worn synchros.
• Clicking from the rear in corners is usually the drive shafts’ CV joints, rarely the wheel bearings or gearbox.

Whether a limited-slip differential is fitted is shown by option code M220 on the vehicle data label – see the decoder.