When my engine temperature hits about 190 degrees my front brakes start to drag. As the temperature goes up they drag harder. At about 210 degrees I dont need to push the brake peddle to stop for red lights. The car comes to a pretty quick stop as soon as I push the clutch in. Interestingly, when the engine is hot and the brakes are draggin the brake peddle is very very very firm (one little tap and the brakes almost lock). As the engine cools the brakes drag less and the peddle softens up.
About a year ago I converted my front drum brakes to disc using one of those all-in-one brake conversion kits. For the first 6-7 months everything worked fine and I was very happy with the disc brakes! However, at about month 8 I noticed the drag. I discounted it at first because as soon as the car cooled off a little bit the brakes stopped dragging. Honestly, I though it was my imagination. However, the problem has grown progressively worse. I have bled and re-bled the brake lines thinking that perhaps there was an air bubble in there that was expanding with temperature but that didnt seem to help. The master cylinder is relatively new. I upgraded it when I converted the brakes.
Any other ideas out there? I would appreciate any thoughts or ideas very much as I am kinda stumped!
