North American Turbocoupe Organization

Problem after brake upgrade.
shiloh66 Offline
Junior Member
I just completed my vacuum brake change over using Sn 95 brakes . Master cylinder,  front and rear calipers,  and rotators. All from a v6 98 mustang. I have brakes but only half pedal. Pedal does not start braking until bout half travel. I have bled the brakes thoroughly. Any ideas ?
88 T/C , 5 speed,white

Jeff K Offline
Pushrod too short???
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

shiloh66 Offline
Junior Member
I did run it out some. Maybe not enough. I feel like I still have air in the lines. I can pump them and get a better pedal. I have noticed during bleeding, air is getting sucked in around the threads on the bleeder. I'm gonna wrap them in thread tape and see if that helps. Thanks Jeff
88 T/C , 5 speed,white

Chas K 88 Offline
Jeff!!! What a thing to ask (Pushrod too short?) Smile

Shiloh66 "air is getting sucked in around the threads on the bleeder". Not sure how you're doing this but I have an idea you have a hose on the bleeder going into a jar, doing all the work yourself. Get an assistant and a drain pan, have them pump the pedal 3-4 times and hold. You crack the bleeders open and close them when fluid/bubbles quit coming out, then repeat until you get no more bubbles and move to the next. Make sure your assistant knows not to let off the pedal until you close the bleeder, or air can get sucked back in. Don't forget to keep an eye on the reservoir level or you have to start over.

I've also heard a good way to bleed brakes is to open each bleeder and let gravity do the work, but that seems messy to me. The fluid would just cover everything in its path as it follows gravity. Under pressure you can control where the fluid goes.

Hope this helps.
Chas K
Current setup - 88 T-bird, 5 speed, vacuum assist master cylinder, T3/T4 50 trim turbo from Bo-port, oil feed & return lines, 3” turbo down elbow, 3" to 2.5" dual exhaust and PiMPx from Stinger 255LPH fuel pump, CD, trip-minder, RR , K&N, 140 MPH speedo conversion (thanks Jeff K).

Kuch Offline
Senior Member
Did you bleed the master cylinder before installing it? You have to bench bleed them prior to installing.
1988 Turbo Coupe, Black/Black, 5 Speed, Moonroof,  T3/T4, ported E6, 255LPH, Kirban, Stinger Exhaust, MGW shifter, K&N, Gillis valve, BP1.5, PIMPx, Koni's
1964 Ford Galaxie 500XL, 390 6V, Big Solid cam, Headers,3.89's, 4 Speed, Vast and fast
1960 Ford Starliner, 292 Y Block, 312 4bbl intake, headers, 3 Speed, slow and low

shiloh66 Offline
Junior Member
Yes. Thanks . After driving it for several miles, brakes seem better
88 T/C , 5 speed,white

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