[Ant]

Jason,

I dont disagree with a lot of what you have said, comparing cast to billet, I dont actually think caliper rigidity is a lot different between the two.
The wiper dirt seals on the AP's are in the piston bore (not exactly visible) and can heat transfer better and arent anywhere near as susceptable at burning off like old style boot seals that were just under the brake pads. Dirt seals arent really that necessary and if you clean the caliper piston before fitting new pads the seals should last a good while.

AP road calipers are of a heavier construction than their race calipers, coupled with the double lip wiper seals are claimed to be more durable, due to the fact they generally see less maintainance than a race caliper which is regularly serviced.

PBR caliper dirt seals and the design that AP makes on these calipers arent really the same thing. Moisture yes its always a good policy to change the fluid every meet.









[quote=D-CEL;935762]I do also need to comment on the statement that Ant made about the AP being superior to Wilwood, as I have had this discussion more times than I care to remember.

AP makes an excellent product, they work as they should.
However, the cost of a cast, aluminum body, 6 piston AP caliper kit is more than twice the cost of a Wilwood billet aluminum bodied kit. (You can get a billet bodied AP caliper it just comes in a whole different catalogue! And they are a whole lot more expensive. Not that cast doesn