PDI Dual Diaphragm Brake Booster Landcruiser 80 series

Braking upgrades should be done in conjunction with power increases and we have found the biggest improvement can be achieved with this mod. A PDI dual diaphragm brake booster for the 80 series is not only new but is larger and will give an increase in brake performance as the booster assist ratio is higher than factory.

Our PDI dual diaphragm brake boosters have been ADR tested and proved to pass all tests. Our design allows us to exceed the standard brake specifications for those with:

• increased weight (both GVM and GCM).

• larger wheel diameter

The only fitting issue is for those with rear air con or ice box console where the alloy pressure lines are routed close to the brake booster and will result in interference such that our larger boosters can’t be fitted.

We recommend these be installed with braided brake lines as line pressure will be increased and the standard lines may be compromised if still original. This is both due to age and the potential for damage as they are fitted to a 4WD. Installing braided lines will also give a better result as factory flexible lines bulge and reduce effective application of the pedal.

These are suitable for installation on both the petrol and diesel models, with and without ABS. It is likely this is going to be the first time you have felt the ABS unit function on the bitumen. For those fitting to petrol models we suggest and additional vacuum reservoir be added to ensure the booster is able to provide full assist for a period after the engine is turned off or if being driven enthusiastically where vacuum build up is limited.