Vacuum Advance unit work is our original core business at which we are highly skilled. If you require a Lucas Vacuum Advance unit,  or Bosch Vacuum Advance parts, we can help.  In fact, there are very few advancers that we can't repair, although some can be very difficult and more expensive. Vacuum Advancers can be purpose built or modified to meet a customers requirements.

While heat and fuel residue are generally recognized as the reason Vacuum Advance unit diaphragms start leaking, it is not generally known that High Voltage arcing taking place within the Distributor, between Rotor Tip and the Cap contacts, causes a build up of nitric acid fumes. These fumes destroy the Vacuum Advance unit Diaphragms on many original advancers. Over the years, we have strived to ensure our Vacuum Advancers last as long as possible, by using high temperature diaphragm materials that will resist nitric acid fumes. We now use Viton and Fluorosilicone based materials to ensure a long working life. All material is less than .5mm thick and incorporates a base fabric giving a high burst pressure (in excess of 100 psi).

While the vacuum advance unit canister is apart, steel parts are zinc plated in silver or gold and alloy parts are bead blasted. Some advancers exhibit weak points from new and we modify the design to eliminate these. The reassembled canister is neat and even after a careful inspection, it is difficult to tell that it has been dismantled.

While we stock hundreds of different Vacuum Advancers on the shelf, they are normally sold on an exchange basis. The reason for this is that we just can't source enough core units to sell them outright. The exception is common Japanese vacuum advance units, some of which we have in large numbers. We stock a wide variety of vacuum advance parts.

Most other makes are too difficult to identify.

We have repaired many different vacuum operated actuators over the years, including  choke breakers or pull offs, secondary choke actuators, fast idlers, air flap controllers, heater vent controllers. We can also repair Turbo wastegate actuators.