bleeding the master cylinder? April 15, 2015, 08:56:36 PM I'm trying to get more brake and stopping out of my 87...since the rebuild, its been a little weak on stopping. Even before the rebuild, I remember it never stopping on a dime, or being able to really lock the brakes up on the car.....So... after I installed the rear end with disk brakes, I knew I needed an adjustable prop valve.... I installed it this week, and I now have rear braking, but its the same quality as I had before, not really great in the stopping dept.. I bled the out of the lines, and now I'm wondering if maybe I need to re-bleed the master cylinder, or perhaps maybe the MC was going before I did the rebuild.maybe I should just upgrade the MC, and plan for larger calipers down the road?any ideas , tests, or thoughts on this situation would be great Quote Selected
bleeding the master cylinder? Reply #1 – April 15, 2015, 08:58:22 PM also keep in mind that I also added some extra weight to the car, and the tires are larger then stock on turbine rims Quote Selected
bleeding the master cylinder? Reply #2 – April 16, 2015, 12:09:34 AM How does the pedal feel right now? Is it spongy and soft or hard with little travel Quote Selected
bleeding the master cylinder? Reply #3 – April 16, 2015, 08:11:28 AM depends..... backing out of the garage going slow, it feels hard and stops quick.... driving, the pedal feels about average, (not supper hard, and not super spongy). it's def not stopping the car quick enough for it to be safe though. I tested the back brakes with the rear end in the air... the brakes stop the wheels during idle, unlike before the adjustable prop valve.. they also dont seem to hold them tight enough. a small touch of gas and they will spin.....it def feels all 4 wheel related, and not a front to back adjustment. Quote Selected
bleeding the master cylinder? Reply #4 – April 16, 2015, 08:21:33 AM i just had a thought that maybe the MC ran dry while I was working on the car, but I never removed it, and I have pics of it still full of fluid while working on the car Quote Selected
bleeding the master cylinder? Reply #5 – April 16, 2015, 12:54:41 PM Do you still have stock brakes up front or did you upgrade to 11" Mustang/Turbo Coupe rotors and calipers? My Thunderbird still has the stock brakes up front and 10" drums in the back. It will lock the tires in a panic stop. Quote Selected
bleeding the master cylinder? Reply #6 – April 16, 2015, 01:06:59 PM I still have stock brakes up front .. Calipers, and pads are also new with the rebuild, along with all the brake lines. Calipers in the rear were still working when I got the 8.8 rear.. They also have new pads , and lines Quote Selected
bleeding the master cylinder? Reply #7 – April 16, 2015, 01:09:50 PM can I do a pressure test on the MC? Quote Selected
bleeding the master cylinder? Reply #8 – April 16, 2015, 02:55:41 PM Dude you built a tank! At least put stang brakes up front. You will improve it some. I put the adjustable prop on mine and ending up opening up almost all the way to get it to what I liked.You put a lot of steel and weight in that car. Quote Selected
bleeding the master cylinder? Reply #9 – April 16, 2015, 02:57:15 PM How much weight in weld was added.lol Quote Selected
bleeding the master cylinder? Reply #10 – April 16, 2015, 03:19:54 PM Get a set of 11 inch spindles, followed by this.....http://ssbrakes.com/i-10092994-disc-brake-kit-front-1-single-piston-with-11in-rotor.htmlI have that very kit on my front end minus the master cylinder. It uses the 73 mm calipers as opposed to the fox Mustang's 60's. I have 10 inch drums out back. Personally I'd use a master that has a reservoir and low fluid switch. You could always call SSBC and see what they would sell the kit without the master for.... Quote Selected
bleeding the master cylinder? Reply #11 – April 16, 2015, 04:16:44 PM Quote from: V8Demon;447174Get a set of 11 inch spindles, followed by this.....http://ssbrakes.com/c-1088691-categories-brake-kits-front-disc-brake-kits-single-piston-front-kits.htmlI have that very kit on my front end minus the master cylinder. It uses the 73 mm calipers as opposed to the fox Mustang's 60's. I have 10 inch drums out back. Personally I'd use a master that has a reservoir and low fluid switch. You could always call SSBC and see what they would sell the kit without the master for....That's some crazy shiznit. Quote Selected
bleeding the master cylinder? Reply #12 – April 16, 2015, 05:37:41 PM Quote from: Kitz Kat;447172How much weight in weld was added.lolI was into my 2nd roll of wire........ 5 pounders plus all that frame steel. Think that was an extra 70lbs right there...lol Quote Selected
bleeding the master cylinder? Reply #13 – April 16, 2015, 05:41:56 PM Paul, as much as I would love to do that...right now isnt the time....the vert is the project for now...EFI, and paint by winter..I have another MC out of the parts bird...I think I should try that next if I cant remedy the brakes...Kitz, I also had to crank the adjustable prop all the way to get rear brakes too Quote Selected
bleeding the master cylinder? Reply #14 – April 16, 2015, 07:09:46 PM It sounds like your current master cylinder is a bit wore out If you plan to swap it out I would also consider swapping in a 93 cobra brake booster, it will give you that extra braking power you need Quote Selected