Date: Thu, 05 Apr 2007 18:31:38 +0100 From: Colin Stamp <col.dustbinnospamp.plus.com> Subject: Re: EBC red pads - too tick - 93 viggen
On 5 Apr 2007 09:42:20 -0700, "pzi" <pzinospamnet> wrote: >On Apr 4, 3:56 pm, Colin Stamp <col.dust...nospamp.plus.com> wrote: >> On 4 Apr 2007 08:17:26 -0700, "pzi" <p...nospamnet> wrote: >> >> >I got new EBC front 12.1 inch rotors and red ceramic pads for my '02 >> >viggen. Installed them and they make a lot of noise. They seem a bit >> >too tick and there is not enough clearance for the rotors. >> >Any ideas on how to gain some room between the pads? I drove for some >> >50 miles and the wear is not helping. >> >I am thinking about shaving some material from the outside of the pad >> >- or maybe take the pad to the grinder and taking some of the pad >> >contact surface. >> >> Assuming this isn't a troll, do not try to modify anything yourself. >> No offence, but you fundamentally don't understand how disk brakes are >> meant to work. Considering how safety critical brakes are, you might >> want to get a trusted mechanic to look at them. >> >> There should be virtually no clearance between the pads,disks and >> pistons at any time. Even if you reduce the thickness of the pads >> (which is pretty-much impossible to do safely without the right gear >> and knowledge) all that will happen is that the pistons will extend to >> fill the gap you've just made. >> >> What kind of noise are they making? >> >> Cheers, >> >> Colin. > > >what is happening is that with the pistons completely retracted the >pads touch rotors and make friction noise. It's normal for the pads to touch the disks all the time, as long as the brakes aren't actually binding. There's nothing to pull them away when the brakes are released. The system can only push, not pull. The extra noise may be because of the redstuff pads. One tradeoff you get with "high performance" pads is extra noise. Normal OE pads just make a faint hissing noise as they drag against the disks. You mentioned the size of the new disks in your original post. Does that mean they're larger than standard? If they are, their edges could be scraping on the calipers. >I agree the breaks are critical for safety but so is the rest of the >car - say the wheels fall off :-) But you weren't talking about grinding any bits off your wheel bolts though. For the sake of completeness, don't do that either ;o) Cheers, Colin.