Mini Mania
Est. 1974
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Spider Gear Diff Pinion Mini & Mini Cooper

Spider Gear Diff Pinion Mini & Mini Cooper

Spider Gear Diff Pinion Mini & Mini Cooper
Often neglected and often needing attention, these gears fit inside the differential of all Minis. The spider gears transmit all the load from the ring and pinion gears to the axles. The gear faces are very hard and not likely to have severe wear but the inside of the gear that rides on the pinion shaft will most like be worn oblong. "Torque" steer, the tendency for the car to dart from side to side under changing speeds, will often be caused by a worn out differential. New spider gears are an important part of the remedy to this problem.
Related Technical Articles:
ENIGINE TRANSPLANTS - Changing FDs and speedo drive ratios
Created: November 02, 2000
If you’ve decided the FD fitted isn’t what you want, changing the FD is possible without separating the engine from the gearbox. Removing the diff case will allow you access to the diff assembly to change the crown-wheel, and access to the gear-change linkage.
Created: October 30, 2000
The standard diff unit’s componentry falls well short in the performance stakes. As an absolute minimum you should fit an up-rated diff-pin - whether this is because your racing regs don’t allow alternatives, or merely for the road - along with new planet-wheels and thrust washers.
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