Rotor Replacement

[machster]

I need increase the space between the pad guides to squeeze in the new rotor. it looks like there a four pins that secure the round pad guides. Does anyone know how to loosen and spread the guides? In the picture you can see the guides with the pads removed.

[ericinboca]

I need increase the space between the pad guides to squeeze in the new rotor. it looks like there a four pins that secure the round pad guides. Does anyone know how to loosen and spread the guides? In the picture you can see the guides with the pads removed.

They are held in with a spring pin/roll pin - the end of the pin fits into a groove on the guides (I call them posts - don't know the actual name.) You can't see the groove in the post unless you remove it.

I only know this because one of the roll pins came out while I was on track once, and the post backed out and struck the wheel spokes at about 70 mph...not a positive result.

I think the purpose of these posts is to hold the pad in place under braking; to keep them from rotating out of the caliper. I don't think they are meant to be moved in and out - I suppose you could by adding a second groove, but then you are shortening the length sticking out for the pads to press against.

There is a published maximum and minimum thickness for the rotors - I don't have the book with me at the moment, but operating from faulty memory, front rotors new (for a 986) are supposed to be 26mm thick; rears 24mm - and minimums in front 24mm, and rear 22mm. I'm sure someone can correct my max and min thicknesses if my memory is wrong.

[Loren]

Hmm... are these rotors for your car?

You are not trying to put Boxster S rotors on a normal Boxster are you?

A normal Boxster (front) rotor is 24 mm new. A Boxster S rotor is 28 mm new. I don't think the normal Boxster calipers will fit over an S rotor.