North American Turbocoupe Organization



Vacuum Brake Assist Conversion 87-88 TC
BJL Offline
Moderator
#1
Back in 2011 i changed over all of my suspension and chassis brake components for SN95 in my 1988 TurboCoupe. going 5 lug opened up a possibility of brake options and since it's “mustang parts” readily available. with the addition to those parts and twin piston front calipers teves was just temporary. it's been on my list to replace the teves master cylinder with a vacuum assisted system. either using sn95 master and booster or the 93 cobra set up.
last week my Teves unit gave up. it has been leaking fluid for about 3 years. just topping it off here and there. when it gave up i made a decision to just remove and move on, not even bother figuring out what was wrong. Especially with 322,000 miles, it's done it's job and very well at that.
I ended up getting the 93 Cobra vacuum brake booster and master cylinder. the vacuum booster is about twice the size of a regular TBird booster. so some finesse of the rear side of the driver strut tower was done to fit it in. \With the cobra booster the bolt pattern is the same as the factory TBird Teves unit. Once the master cylinder is installed it opens up a lot of space. easier to run new brake lines to the proportioning valve.
I'm using the NiCopp brake line. its softer so it's easier to bend into place and flare. i've been using it for 6 years at work. and most recently almost every week im changing brake lines in a truck. Finding all the correct fittings was fun. Purchasing a T-fitting and a few other fittings and its all plumbed in. the master cylinder uses metric bubble flare and the rest of the car is standard double flare. I ended up running a new drivers side brake line since it's only a few feet long.
My next step was to start removing all the unneeded ABS/Teves/Ride control wiring i don't need anymore. that has become a huge project in itself as i'm trying not to pull my dash out. i will most likely only pull it out of the engine bay for now and finish the rest once i can drive the car and turn it around in my driveway. So i'll have working brakes and a mess of wires just sitting on my passenger floor for a few weeks. I don’t like not be able to drive it.
I'll keep everyone posted on my progress. Hopefully this will make me able to spot efficiently again.
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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andrewjs18 Offline
Administrator
#2
looks good, man!
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Mikey97D Offline
Junior Member
#3
Nice Work!

I am interested in what you notice for change when driving especially with your brake setup.
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BJL Offline
Moderator
#4
Finally got every thing together and working correctly. maiden Voyage was Saturday afternoon. put close to 100 miles on it since.
few lines had to be made and different fittings. plus an adapter i wasn't happy about using. i m also using the factory TC proportioning valve.
i should have done this many many years ago. now that it working and im happy with pedal feel and stopping ability i think i may upgrade to 13in cobra rotors and .
best money i have ever spent was to do this.
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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