TheTallOne

Thanks for the replies everyone, very helpful. "Don't rush and don't bodge" - Rules to live by. Picked up the kit from MachineMart. All done, all pins greased and tightened to the required 28Nm according to Haynes. No play in the new threads. The rumble continues though. I've had all four wheels jacked up and given them a good wiggle, can't feel any play. It still sounds like it might be coming from the near side rear. That wheel turns freely by hand, there's an ever so slight scraping sound each revolution under hand turning. Is that normal? Could that be my culprit?

Oh God. Found the problem. The threads that the pins screw into are shredded. I must've overtightened them. God damnit. Basically the pins have a bit of play as they sit in their threads. What now? Tap a new thread? Lather the screws in epoxy and get them in, what? I feel like an idiot.

Righto, thanks. Would a bit of good old fashioned Bearing Grease work on the pins?

I really really wish I'd gotten the message about copperslip before I slathered it all over the back of the pads, which I did. I'll take the pins out and check them. How do I check for their free movement? They just screw in and out, I thought if they screw in properly then they must be in the right place, is that not true?

Hi all Long time lurker, first time poster. I have a 58 plate Mk2, 1.2 HTP. 96500 on the clock. Recently I did some work on the car, replaced front pads (me), discs (me), and brake fluid change (garage). I've noticed what I think is a new sound, a sort of very low level rumbling, it's very like the sound you get approaching a dual carriageway roundabout, going over the little bumps, but much quieter. It's barely noticeable, but definitely there. I know the obvious culprit here is disc runout, which, I confess, I wasn't able to check on fitting as I didn't have the tool, but the weird thing is that it really sounds like it's coming from the back, not the front, and I haven't touched the drum brakes. In terms of handling/performance I can't really see any change from before. The brakes are much better, obviously, and don't behave oddly. It doesn't pull one way or the other under heavy braking, fuel economy is unchanged (42-47mpg). I took a recording of the sound (attached). You have to listen pretty hard to pick it up. It's unnoticeable at low speeds, peaks at about 35mph, and then fades out as I climb over 60mph. At 70 I can't detect it at all. Should I be worried? Was I a fool to change the discs myself? Any and all help appreciated. Jon. The Sound.mp3