johnd-mkiv Posted December 17, 2013 Share Posted December 17, 2013 Feeling lucky after having a proper look around my new Supra come across this had this with a few rear disks on the supras now, worth having a quick check over Quote Link to comment Share on other sites More sharing options...
bignum Posted December 17, 2013 Share Posted December 17, 2013 Wow thats proper in half, i wonder if the caliper has seized to get them hot enough to crack? Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted December 17, 2013 Author Share Posted December 17, 2013 Wow thats proper in half, i wonder if the caliper has seized to get them hot enough to crack? both rear disks have unusual wear on the inside face a band of about 20mm that's in use the rest is rust, need to strip the whole lot down. A possible cause why my cars all over the road when I floor it. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted December 17, 2013 Share Posted December 17, 2013 They look pretty worn, how did you not spot that?! Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted December 17, 2013 Author Share Posted December 17, 2013 They look pretty worn, how did you not spot that?! just bought the car and only just got the time to work on it and look round it properly, the rear disks always seemed to be to thin to be vented aswell, cracked another set but this was after a hard track day Quote Link to comment Share on other sites More sharing options...
Dan_Q Posted December 18, 2013 Share Posted December 18, 2013 ouch. are they genuine toyota discs? would be interested what make if not so I can avoid them! Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 18, 2013 Share Posted December 18, 2013 Never had an issue with O/E discs even on trackdays. Good job you spotted that as it could of got very messy and expensive Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted December 18, 2013 Author Share Posted December 18, 2013 Can't see a make on it, the other disks on my second supra are drilled and grooved one of them has a hairline crack between the holes, fairley sure my old supra had drilled disks an that was the same. Thought I'd post it in here as don't take long to have a look around and might save a life aswel as your pride and joy Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 18, 2013 Share Posted December 18, 2013 Drilled are always having issues, especially the really cheap stuff, not worth fitting in my opinion Quote Link to comment Share on other sites More sharing options...
SPG Posted December 18, 2013 Share Posted December 18, 2013 John, once these are off, any chance you could measure the thickness of the disc, perhaps these have been skimmed too much at some point? Good warning nonetheless Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted December 18, 2013 Author Share Posted December 18, 2013 John, once these are off, any chance you could measure the thickness of the disc, perhaps these have been skimmed too much at some point? Good warning nonetheless Yer will have a look today Quote Link to comment Share on other sites More sharing options...
MattP Posted December 18, 2013 Share Posted December 18, 2013 Getting every last penny's worth from your discs Quote Link to comment Share on other sites More sharing options...
Mugello Posted December 18, 2013 Share Posted December 18, 2013 Never seen that before ! Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted December 18, 2013 Share Posted December 18, 2013 I've had cracks with 3G drilled discs, noth as bad as the OPs though! Quote Link to comment Share on other sites More sharing options...
markssupra Posted December 18, 2013 Share Posted December 18, 2013 Very lucky John, could have ended badly. Quote Link to comment Share on other sites More sharing options...
Dan_Q Posted December 18, 2013 Share Posted December 18, 2013 grooved FTW Quote Link to comment Share on other sites More sharing options...
Stonkin Posted December 18, 2013 Share Posted December 18, 2013 Good job you checked those by the looks of it! Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted December 18, 2013 Author Share Posted December 18, 2013 3G was the disks on my old supra, they cracked after I took the car to Raf Marham, but in all fairness they took some abuse Quote Link to comment Share on other sites More sharing options...
Tom Posted December 18, 2013 Share Posted December 18, 2013 3G was the disks on my old supra, they cracked after I took the car to Raf Marham, but in all fairness they took some abuse Looking forward to seeing the project dude Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 18, 2013 Share Posted December 18, 2013 I can 100% guarantee a seized caliper, or more likely seized sliders caused this. I have a stache of similar discs, caused by exactly those issues. Quote Link to comment Share on other sites More sharing options...
Pig Posted December 18, 2013 Share Posted December 18, 2013 Good job you checked that! My 3G disks also began to crack but NOTHING like that - for that reason I wouldn't buy 3G again. Lots recommend stock disks and pads or CW fast road pads - I know how you drive, don't bother. You need CW race pads (if you can still get them) and a quality disk - I bought some with temp sensors on and they seem to be lasting. Let me know if you want me to dig out where I got them from. Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted December 18, 2013 Author Share Posted December 18, 2013 Looking forward to seeing the project dude Cheers Tom, hows it going long time no see? I can 100% guarantee a seized caliper, or more likely seized sliders caused this. I have a stache of similar discs, caused by exactly those issues. The car was rumoured to have been sat for a while so more than likely the case, when I get some spare time ill strip them down and put the new disks on, thanks Chris Good job you checked that! My 3G disks also began to crack but NOTHING like that - for that reason I wouldn't buy 3G again. Lots recommend stock disks and pads or CW fast road pads - I know how you drive, don't bother. You need CW race pads (if you can still get them) and a quality disk - I bought some with temp sensors on and they seem to be lasting. Let me know if you want me to dig out where I got them from. http://img.tapatalk.com/d/13/08/02/jevepuga.jpg thanks mate, I know a while back the 3g was all the rage, after Marham I managed to graft a full set of evo brakes on but stayed away from the drilled disks. Not sure what way im going to jump with the brakes yet but ill bear you in mind thanks Quote Link to comment Share on other sites More sharing options...
thetrashcanman Posted December 19, 2013 Share Posted December 19, 2013 Good job you checked that! My 3G disks also began to crack but NOTHING like that - for that reason I wouldn't buy 3G again. Lots recommend stock disks and pads or CW fast road pads - I know how you drive, don't bother. You need CW race pads (if you can still get them) and a quality disk - I bought some with temp sensors on and they seem to be lasting. Let me know if you want me to dig out where I got them from. http://img.tapatalk.com/d/13/08/02/jevepuga.jpg Jon when you get a chance can you PM me where you got those discs from be interested for future reference and good spot John, and well done for posting it up Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 19, 2013 Share Posted December 19, 2013 grooved FTW Stock for the win if its just for road use Quote Link to comment Share on other sites More sharing options...
Tyson Posted December 19, 2013 Share Posted December 19, 2013 Good spot that could have got interesting and by interesting I mean expensive Quote Link to comment Share on other sites More sharing options...
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