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Ginetta G40 Brake Pad Replacement

If you're using the G40 on track, I recommend replacing or refreshing the front brake pads every other track day. I notice that the brakes start to reduce in effectiveness during the afternoon of the second track day. You can resolve this by fitting new pads or scrubbing up (refreshing) a used pair.

Buying new pads

You can only get the pads from Ginetta, although they are manufactured by PFC. The pads are the same for front or rear calipers. For more information, see: Ginetta G40 Wheels, Tyres & Brakes Info.

Procedure for replacing front brake pads

In summary, you'll need to remove the caliper to replace the brake pads. This is very straightforward and requires the following tools:

  • Trolley jack
  • Wheel bolt socket 18mm and torque wrench (set to 80 n/m)
  • Pliers
  • Socket with 8mm Hex bit; or 8mm Allen / Hex key
  • Piston compression tool such as this one from Silverline on Amazon

(Step 1) Choose a wheel to work on and jack up the car to remove the road wheel.

(Step 2) Remove the road wheel.

(Step 3) On the brake caliper, remove the pins that lock the brake pads in place. These pins are secured by a fastening clip through the middle hole of the pin. Pull the clips out with pliers and then remove the pins.

(Step 4) On the rear of the caliper, find the two securing bolt heads and loosen them with an 8mm Hex bit / key. Remove the bolts to free the caliper from the mounting. Be careful not to let the caliper drop to the ground, or damage the brake pipe union to the caliper. Support the caliper in some way to prevent it falling or swinging on the brake pipe.

Also note that there are two washers that sit in the bolt joint, so don't lose them. Put all parts safely aside and in some kind of order so that you know where they came from.

(Step 5) Remove the brake pads.

(Step 6) Compress the caliper pistons so that you can fit new brake pads and replace the caliper on the disc / rotor. If you don't compress the pistons, it won't be possible to put the caliper back over the disc / rotor. Use the tool listed above to compress the pistons.

(Step 7) Place the new brake pads in the calipers and reverse the previous steps to re-mount the caliper, replace the pins (use the second / middle hole for securing with the clip) and replace the road wheel.

Refreshing used brake pads

You should be able to refresh brake pads by scrubbing them with coarse emery paper (aka wet & dry paper - but use dry, not wet, as we don't want to polish the pads!).

Photos

G40 brake pads caliper and pin

G40 brake pad retaining clip

G40 brake pad retaining pin

G40 brake caliper removal of securing bolts

G40 brake caliper removed

Supporting the G40 brake caliper when detached

G40 brake pad parts