AP Racing Brake Upgrade - Disc replacements

[jonnysideways]

Dear all.

Have my first CSL with AP Racing brakes on front.

I know nothing about them, what model etc and more importantly need a set of discs as they are wrapped but don't know what I need or where best to get them from.

Cheers in advance.

JD

[knoxville]

I'd be making sure they're warped and not just built up with pad deposits. What pads are you using?

[Mike RT4]

What he said ^.

Ferodo DS2500 are terrible for this if used aggressively.

However, if you need new discs, replace them with Performance Friction ones:

http://www.cslregister.com/forum/showthread.php?t=9820&highlight=Performance+Friction+discs

[jonnysideways]

Not sure on pads as inherited them with car and not looked closely yet. Cheers.

[jonnysideways]

I'd be making sure they're warped and not just built up with pad deposits. What pads are you using?

The grooves look ok.

[knoxville]

The grooves look ok.

It will only take a small amount not even visible to the eye on the pad to disc surface. Rare that these discs warp tbh. If it's just road use it'll be pad deposits. A thorough workout can usually bring them back to life.

Really need to know what pads are fitted.

[B0rJarZz M.]

PFC + Pagid

[jonnysideways]

Additional. They ate worse when discs have warmed up vibration not really noticeable when cold. Cheers.

[jonnysideways]

could someone please give some advice on how to service / overhaul brakes? as in can or should pins be greased, with copper slip, or special silicon etc? as it maybe pads sticking hen warm thats causing the issue, they look new
cheers.

[Chad]

could someone please give some advice on how to service / overhaul brakes? as in can or should pins be greased, with copper slip, or special silicon etc? as it maybe pads sticking hen warm thats causing the issue, they look new
cheers.

For me, I use silicone as it doesn't distort rubber dust seals etc

[trackm3_csl]

could someone please give some advice on how to service / overhaul brakes? as in can or should pins be greased, with copper slip, or special silicon etc? as it maybe pads sticking hen warm thats causing the issue, they look new
cheers.

new seal kit maybe ?

[Pip1968]

It sounds more like a sticky caliper if the pads are new. Either that or the pads have not been bedded in properly. There is a bedding in write up somewhere on one of the big brake pad manufacturers - Pagid maybe?

If it is deposits I think an abrasive pad will sort them out on a bedding in procedure.

If a sticky caliper you will need to refurbish them or buy a new one. I am not sure if you can just buy one side as opposed to a pair but refurbisment is probably the cheaper option.

Let us know how you get on. Good luck.

Pip

[trackm3_csl]

It sounds more like a sticky caliper if the pads are new. Either that or the pads have not been bedded in properly. There is a bedding in write up somewhere on one of the big brake pad manufacturers - Pagid maybe?

If it is deposits I think an abrasive pad will sort them out on a bedding in procedure.

If a sticky caliper you will need to refurbish them or buy a new one. I am not sure if you can just buy one side as opposed to a pair but refurbisment is probably the cheaper option.

Let us know how you get on. Good luck.

Pip

You can buy individual calipers, but its normally just a melted or dmaged outer seal, i keep them in stock

[stevenEK9]

could someone please give some advice on how to service / overhaul brakes? as in can or should pins be greased, with copper slip, or special silicon etc? as it maybe pads sticking hen warm thats causing the issue, they look new
cheers.

i've overhauled a set of 4 pot brembo race calipers off my old car

similar to the M3 AP's they only have a piston seal, no dust seal, that is the problem as the dust seal keeps the shite out for general road use

remove the caliper from the car

i used plastic G clamps to hold all the pistons bar 1 in, then used a bicycle floor pump to pump air through the caliper and pop out the single piston

thoroughly clean the piston, check for wear, then pop the seal out and replace it

small amount of grease on the piston and pop it back in

repeat process for rest of the caliper

easy enough DIY if you have the patience and the pistons aren't seized, just sticky

[jonnysideways]

cheers for this, assuming i still have car in the new year ill pull them off and get this sorted. ill do the caliper clean up too.