Brakes don't Bite |
|
Wednesday, 25 December 2024 |
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Brakes don't Bite |
bkrantz |
Sep 1 2022, 08:16 PM
Post
#1
|
914 Guru Group: Members Posts: 8,173 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains |
As part of my rebuild I completely replaced the brake system:
calipers and rear pressure valve rebuilt by PMB new ATE 19mm master cylinder new hard and flex lines new disks and Porterfield R4-S pads I went through many (many!) episodes of bleeding, with different methods. The pedal feels very firm from the first push, and does not pump up. Rear clearance is set at .004". I went through the PMB bedding process, and have driven around a bit. But the braking force seems weak. When I get on the brake pedal, I do not feel any "bite". Another 914 friend drove the car and also agrees. Any suggestions? |
jim_hoyland |
Sep 2 2022, 09:57 AM
Post
#2
|
Get that VIN ? Group: Members Posts: 9,557 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
What MPH would the front lock-up test best be done ?
|
Superhawk996 |
Sep 2 2022, 10:06 AM
Post
#3
|
914 Guru Group: Members Posts: 6,598 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
What MPH would the front lock-up test best be done ? 30- 40 mph is sufficient. Dry pavement. Safe area to do so. You want the vehicle to have enough momentum so that it will take quite a bit of line pressure to lock the brakes but not end up stopping the vehicle completely. A light squeal or heavy scuffing from the tire is all it takes to confirm No need to keep it locked for any time/distance that would cause a tire to flat spot. |
Lo-Fi Version | Time is now: 24th December 2024 - 06:38 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |