As above fitted my kit today and on first test drive there mega judder even at rolling speeds get worse with higher speeds I know the kit I brought was second hand I'm also using jaguar xjr red stuff pads for better contact area could this be the problem or do I need a re skim ? Any help appreciated

 

My godspeed discs do the same on my 4 pots. Seem to be warped, is this a common problem ?

 

What pads are you using ?

 

Red stuff pads

 

Normal 4 pot ones ? I've used jaguar xjr red stuffs for larger contact I might change pads over to my old mintex pads and see if any different

 

have you got deposits on the disc from the brake pads? as this can cause the judder,
you can skim the discs although this depends on how thick they are as if they are to thin you wont be able to take any off.

 

No deposit brand new pads just second hand discs there's loads of meat in them for a re skim ... Just wanted to know if they could be skimmed !

 

best get in touch with the man himself then, unless there is a machine shop local that will do it for you.

 

Ian will probably be along himself soon. He's always very helpful, so if you dropped him a PM on here or emailed (Ian@godspeedbrakes.co.uk) I'm sure he'd advise even though you bought them second hand. The jaguar pads are the way to go, using standard sized pads loses some of the advantage of the larger discs. Have had my godspeed discs on for 15000 miles or so with no problems, and haven't heard any widespread discussion of issues, so I don't think problems are any more common than with any other disc.

 

HI
If the discs do need skimming and its not pad deposits , as long as there is life left in them they can be skimmed , the grooves on my discs are machined 1mm deep , as well as doing there purpose , they are also wear indicators , when the grooves have gone , they need replacing , if there is plenty of groove depth then they can be skimmed no problem , usually a disc would only need skimming a small amount , this is something we can offer you for £30 a pair.

One thing you could check first though , is remove the bell from the disc and check for corrosion on the mating faces , any corrosion will stop the discs sitting properly on the bells and you will get runnout , clean these surfaces with WD40 and emery cloth to clean them up , also make sure you cleaned the hub face where the discs sit , any rust or muck on these will also run the discs untrue.

Another common reason for discs warping which is an issue with the Subaru 4 pot calipers is sticking or seized calipers , if a piston is not releasing off the disc properly it will build up heat and can warp a disc , you might have bought second hand discs from a car that had this problem

Hope this helps , if you need any further help please ring me on 01656 723060

Cheers Ian

 

Superb after sales service even thow I never brought them direct from Ian got all the answers a needed thx mate

 

Hi
Your very welcome , nice to talk to you today , hopefully helps in sorting you out
Cheers Ian

 

Sorted they were warped mega bad needed 5-6thou skimming off them now nice and true just got to bed them in now And I'll be a happy bunny ... Thx again Ian

 

No problem , 5 thou isn't a lot really , as long as your sorted

I have the new bluestuff pads in the pad shape for this kit in stock now , so if you want to make even better , drop me a line
Cheers Ian

 

can i ask why would you use jag xjr pads on a scoob? am a touch puzzled

 

Bigger disc area and standard pads don't fill the width of disc no more jag pads are alot bigger so more contact surface and the same fitting holes as oem 4 pot pads

 

Yes the Jag pads are the same length as a Subaru pad but are about 15mm wider , so the 335mm discs we make also have a wider pad area on them , so you end up with a lot more pad on the disc which equals better braking
Cheers Ian

 

a ha! i recently bought grooved discs and pads off you anyway (couple of months ago) and am nearly there saving for the conversion kit you quoted!!!