Detroit Iron
Well-Known Member
- Local time
- 12:15 AM
- Joined
- Jul 30, 2008
- Messages
- 436
- Reaction score
- 215
- Location
- Bay Area - California
I started having a strange issue with my brakes and wanted to get input before I start throwing money at parts.
I did the Richard Ehrenberg Disc-o-tech upgrade on my '64 Polara. Basically it's big later model B-body discs up front with the pin mounted calipers. Rear brakes are 10" drums, and I have a Mopar Performance aluminum master cylinder.
When I begin driving the car the brakes function properly. About ten minutes into the drive my pedal goes rock hard, and the brakes seem to be applied slightly. After driving this way for about 10-20 more minutes, the problem will go away, only to return a few minutes later.
At first I figured I was getting vapor lock in the lines, so I bled the system; fully purging all the old fluid. The problem still exists. At this point I feel the problem is with the master cylinder. Maybe the piston is hanging up. Maybe it's one single wheel cylinder. Any thought on this situation would be greatly appreciated.
I did the Richard Ehrenberg Disc-o-tech upgrade on my '64 Polara. Basically it's big later model B-body discs up front with the pin mounted calipers. Rear brakes are 10" drums, and I have a Mopar Performance aluminum master cylinder.
When I begin driving the car the brakes function properly. About ten minutes into the drive my pedal goes rock hard, and the brakes seem to be applied slightly. After driving this way for about 10-20 more minutes, the problem will go away, only to return a few minutes later.
At first I figured I was getting vapor lock in the lines, so I bled the system; fully purging all the old fluid. The problem still exists. At this point I feel the problem is with the master cylinder. Maybe the piston is hanging up. Maybe it's one single wheel cylinder. Any thought on this situation would be greatly appreciated.