Skip to main content
Topic: Parking brake strength (Read 1443 times) previous topic - next topic

Parking brake strength

I've always wondered this. I have TC rear disk brakes with equal parking brake cable tension on both sides. I can push the parking brake down very hard, but if I put the car in drive or reverse (auto), the car creeps quite quickly. Do our parking brakes just suck? Is it related to the foot pedal not giving us enough mechanical advantage to provide enough clamping force? Is there a way to strengthen this up like newer cars, without switching to a hand brake (which would actually be nice to do)?

Maybe I'm just used to newer cars that I drive with hand brakes having smaller engines, and the torque on them can't overcome the friction like the 302 can.
1988 Thunderbird Sport

Parking brake strength

Reply #1
my car I can't even move it. well, let me re-phrase,I probably could using engine power, but can't.by hand. every other fox  car I've had I the parking brake.did.nothing.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

Parking brake strength

Reply #2
Mine locks it up solid. I adjusted it all myself though when I installed the rear axle with discs.
1983 Tbird with '03 Split Port V6 motor swap done! Headers, dual exhaust, 500CFM Edelbrock, 3G upgrade, Electric fan. 3.73 Gears and an FRPP Limited Slip. Five lug complete! 5-Speed conversion complete! Standalone Fuel Injection in progress...

Parking brake strength

Reply #3
Mine kills the car if you let out on the clutch with the engine running.  This was with the 302 and the TC rear brakes waaay back in the day.  Sounds like something is out of whack with the adjusters on your calipers or the cables have stretched.

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

Parking brake strength

Reply #4
Quote from: jrad235;417751
Mine locks it up solid. I adjusted it all myself though when I installed the rear axle with discs.

I'll need you to look over the car and see what may be off.

The pedal only goes about halfway down to the floor before it has a lot of tension. There must be something binding up somewhere. Two people who know what they're doing would much more easily identify the issue...

My cables are very new from the connection under the driver seat, to the rear brakes. If anything, it must be something up front around the pedal, or that joint itself.
1988 Thunderbird Sport

Parking brake strength

Reply #5
I've always found the e-brake to work extremely well.
...and there was light!

Parking brake strength

Reply #6
Next up, I'll have to find some thread here I saw years ago that either covered a handbrake conversion, or linked to some page about it. It'd be awesome to have an actual handbrake in our cars. I'm trying to get with the times! Moving the center switches would be nice also.
1988 Thunderbird Sport

Parking brake strength

Reply #7
Quote from: Seek;417794
I'll need you to look over the car and see what may be off.

Remind me next time I'm over.
1983 Tbird with '03 Split Port V6 motor swap done! Headers, dual exhaust, 500CFM Edelbrock, 3G upgrade, Electric fan. 3.73 Gears and an FRPP Limited Slip. Five lug complete! 5-Speed conversion complete! Standalone Fuel Injection in progress...

 

Parking brake strength

Reply #8
E brakes have specifications

The E brake must hold a car on a 15-20* angle when applied with a force of 90 LBS of applied pressure from hand activated units and 115 LBS with foot applications. And also be able to stop the vehicle at a speed of 25 MPH within 65-70 FEET. As a state inspector we need to check this. Certain commercial vehicles are tested with a deceleration meter secured to the windshield during annual inspection of the E BRAKE or SPRING BRAKE. This includes tranny shoes  and rear axle bands or shoes mechanically applied or air applied systems. Just saying!!
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!