I’ve had this on my 2+2 and on a couple of Mk2 and Mk3 Fiestas and Mondeos. I put it down to poor quality brake discs, i notice that the worst ones had the vents in the middle of the disc cast closer to one side than the other, i suspect this causes them to heat up unevenly and warp. And the roads i was driving on to/from work. lots of 1-2 miles stretches of dual carriageway with roundabouts in between. I’ve not had the problem recently.
I’m not sure i agree with his theory, if the calliper mounting wasn’t quite parallel to the disc then the pads would just wear at a slight angle to compensate. As long as the calliper is sliding ok it should handle any slight misalignment. Now, if the front face of the hub wasn’t machined parallel to the bearings then the disc would wobble as it rotated and i guess that could cause one section of the disc to get hotter than the other. But i would expect some amount of vibration even on new discs. Some of the 1.0 and 1.1L had smaller bearings so stick to a 1.4 or 1.6 XR2 and you should be ok. Watch out for s/h ones by mail order as often the inner bearing can spin on the hub and wear it. Jim From: Paschal Carroll Sent: Wednesday, July 04, 2012 3:04 PM To: [email protected] Subject: [Quantum Owners] MK2 front hub reqd. Having been plagued by brake discs constantly warping on my 2+2 my local mechanic has spent a lot of time investigating and measuring various components. As callipers, pads and discs have been replaced and noting that the offside disc appears to be the one which is warping he has suggested I source a front offside hub assembly. He suggests that the disc/hub may not be entirely parallel to the calliper and therefore the disk is being forced out of alignment. Question one: Are all the MK2 hubs the same?. Mine is 1.4S based but I can’t see any reference anywhere to there being any difference between the various models. No joy so far in any scrappies over here. Question two: Does anyone have one to sell or know where I could get one?. (The logistics of getting it to Dublin can be sorted later) Paschal -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
