BlackLine Helical Gear LSD Ford Capri Cortina Escort Atlas Axle 16 Spline
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BlackLine Helical Gear LSD Ford Capri Cortina Escort Atlas Axle 16 Spline
Product Code: MLR.BEJ
Product Weight: 7000g
Ex VAT Price: £333.32

BlackLine Part No: HLF012
Helical gear Limited Slip Differential

Suitable For:
  • Ford Atlas axle (16 spline)
  • Capri Mk1 3.0
  • Capri Mk2 3.0
  • Capri Mk3 2.8i/3.0
  • Cortina Mk3/4/5 2.0 & 2.3 V6
  • Escort Mk1 fitted with Motorsport Atlas axle upgrade
  • Escort Mk2 fitted with Motorsport Atlas axle upgrade
Not Suitable For:
  • Escort Mk1/2 English axle (Salisbury/Timken Type)
  • Group 4 Atlas axle (18 spline)
  • Cortina 1.3 / 1.6 KOLN axle (weaker version)
On Ford Atlas axles the diff is removed from the rear via an inspection plate. On English Axles the diff is removed from the front as a complete unit.

Blackline Helical LSD's - How They Work

The Blackline helical LSD's are torque biasing, that is they distribute torque between the wheels, loading more torque towards the wheel with the best traction thus improving performance and driveabitily. Especially in low grip situations.

The helical gearing manages the distribution of friction within the LSD. When torque is applied to the helical gear system it creates force that pushes the gear into the differential body, thus creating friction. Increases of torque, increases the thrust force directly proprotional to the amount of torque. This allows the Blackline LSD to cope with considerable traction imbalance even under heavy power conditions, as would be the case on exiting a powered up corner. But at low torque conditions the LSD can differentiate quietly and smoothly, thus making the differential very suitable for normal road driving.

The Blackline LSD uses the popular parallel axis helical geared configuration optimised for even load distribution. They are designed with a torque bias of 5:1 this means that if  one wheel loses traction then the wheel with the most grip can receive five times as much torque as the wheel that is slipping. However, five times zero is still zero, so all these helical LSD's work best when both wheels are 'planted' and some traction is still available on the slipping wheel. In practice this is rarely a problem as there is always some 'drag' on the slipping wheel, however some drivers expertly use left foot braking to partially lock the spinning wheel.

Helical LSD's work especially well when combined with modern anti-lock braking systems.

The Benefits Are:
  • Applies equal rotational speed to both wheels
  • Distributes torque according to available traction
  • Minimum servicing compared to plate type LSD's
  • Low noise
  • Controlled power on launches and drifting slides
  • Progressive engagement
  • Easier car control
  • Optimum gear tooth design and oil distribution
  • Gears and Body Manufactured from 8620 material
  • Direct replacement for stock differential
This is a Torque Biasing Helical Gear LSD. These are generally regarded as a nicer road LSD as they have little side effects during normal driving (unlike plate type LSD's that constantly resist differing wheels speeds during cornering) They do not require a special oil. We recommend that the axle oil is changed after the first 500 miles as initially they can create swarf - this is normal and will reduce with use.

Note: This is not a plate type, viscous coupling or clutch pack LSD.

  • Assembled differential unit only
  • Bearings, gears, gaskets/seals etc are not included

Designed for Motorsport use
No instructions included

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