View Single Post
Old 1st August 2019, 16:07   #4
HarryM1BYT
This is my second home
 
HarryM1BYT's Avatar
 
75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD

Join Date: May 2010
Location: Leeds
Posts: 17,273
Thanks: 2,160
Thanked 2,061 Times in 1,586 Posts
Default

Quote:
Originally Posted by RoverP480 View Post
Are you sure its warping or disc thickness variation . Not knowing you journeys but stopping with ones foot on the brake, especially with the discs hot can cause localised heat variation which can warp the disc.

Correct, it can.



OP - What makes you thin your discs are warping, is it juddering a bit on braking?


A solution I found some years ago, which has worked several times for me...


On an empty bit of road, get it up to 70 and brake as hard as you can, without actually locking the wheels, but (important) do not come to a complete stop. Repeat twice more.



Idea is, that the stops with your brakes applied, causes differences in ability for the disc to cool and sets up stresses in the steel and it warps. Getting them good and hot relieves the stresses - the not stopping completely, prevents more stresses being set up.



__________________
Harry

How To's and items I offer for free, or just to cover the cost of my expenses...

http://www.the75andztclub.co.uk/foru...40#post1764540

Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing.

I've taken a vow of poverty. To annoy me, send money.
HarryM1BYT is offline   Reply With Quote