Modern starting power for classic cars.


When a vehicles starter motor begins to fail, it puts huge strain on the battery and other components in the starting circuit. Replacing your starter motor at the first signs of failure can save hundreds in repair bills. Upgrading to a WOSP unit, however, makes sense even if your starter motor is OK at the moment.

We love WOSP Starter Motors and every classic car owner can benefit from installing one. To see why we need to understand the differences between their units and traditional starter motors.

What is the difference?


Every car registered before 1980 will have a direct drive starter motor. The motor armature and the Bendix drive, which engages the flywheel’s ring gear, are directly connected and are in-line with one another. As you twist the key, the bendix shoots out, engages with the flywheel and turns your engine over at the speed of the electric motor.

Direct drive starter motors are big, heavy and very power hungry. If your battery is in marginal condition, the likely hood is that your car won’t start.

Gear reduction starters use gears to reduce the speed of a smaller, more efficient, high-speed electric motor in order to provide more torque at the flywheel. Typically they use 50% less power, giving you twice the opportunity to start your car.

What are the benefits of a WOSP Starter Motor?

tick bullet icon


WOSP’s Denso based starter motor requires 50% less electrical power to turn over the car’s engine. Less power at the starter means more is available for the ignition.

tick bullet icon


They are smaller and lighter than direct drive models.

tick bullet icon


There is more space around it, which makes installation easier and helps to stop heat-soak to the solenoid.

tick bullet icon


WOSP starter motors have a higher part count, but internal wear is less compared to direct drive starters  This is because they use bearings instead of bushes found in direct drive starters. Misaligned or worn bushes are the most common cause of slow cranking engines.

tick bullet icon


Although gear reduction starters turn more slowly at the flywheel than direct drive models, their torque is higher.  Therefore they have a faster speed when piston is at Top Dead Centre, on the compression stroke. Speed where it is needed the most

Getting one fitted.


There is a huge range of different options so to make sure you have exactly the right information please fill out the following request form and we will be able to send you a bespoke quote. For a ball park, labour and wiring materials rarely goes beyond £250 + VAT.

Share This