Removing front disc - rounded bolt head...

[griggsy2]

The genius who changed the front right disc last rounded the bolt head but shoved it back on regardless...

Can't get the bloody thing out with heat and penetrating fluid as the 6 side socket just lifts off. Any tips or tricks before I kill something?

[griggsy2]

Popped out to grab some of the Irwin bolt removers but alas, not quite enough clearance as they have hex tops.

[griggsy2]

HustleRussell said:

Reduced head bolts aren't they?

Have you got a sacrificial 6-point socket you can grind down to remove the internal chamfer?

I changed my brake discs a couple of weekends ago, they are capheads on later cars like mine but they are bloody tight so I gave them a decent whack with an impact screwdriver before winding them out.

Spell that out for me, I don't mind sacrificing anything to get this bugger out. Need to find replacement bolts somewhere (nothing obvious on caterham parts), silly bloody idea to use such flat heads...

[griggsy2]

Sure, here's the little prick...

[griggsy2]

It looks that way

I guess drill down all the way and re tap the thread?

[griggsy2]

OK, thanks all.

Any recommendation where to get the bolts to replace? Seems 14mm head, 9.4mm wide body, 22mm long under head.. Couldn't see anything matching.

[griggsy2]

Russell, I just worked out what you meant with removing the champfer. (Also missed your explanation Mark as I was uploading the pics, appreciate the offer!)

Filed down the socket in a vice, hammered it down flush and off it popped, magic! Will save that socket off for all future disc changes.

Much appreciate the help all!

Edited by griggsy2 on Monday 21st August 18:00

[griggsy2]

HustleRussell said:

This it?

Guessing your car is imperial...

Looks too long, though description seems correct.. 1.1/2" is what, 38mm?

[griggsy2]

Thanks. The ground down socket and a hammer did the trick