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Technical => Suspension/Steering => Topic started by: 23027 on February 08, 2011, 01:50:01 AM

Title: TurboCoupe Brake Booster?
Post by: 23027 on February 08, 2011, 01:50:01 AM
So the brake booster has failed on my TurboCoupe, trying to brake before I decided to motor swap was like trying to move the earth with my legs

I've seen a couple different versions of brake boosters, the normal turbocoupe one which is a monster, has plugs in it and what not

(http://www.therangerstation.com/tech_library/images/Turbo4_1.jpg)

and this neat little one. No plugs.

(http://img215.imageshack.us/img215/9782/enginefinished3.jpg)

I'll assume the stock turbocoupe large one with plugs, is because of the ABS system?? I'm not keeping ABS in my swap, so would I be safe to get a neat little one? What brand/from what car could I buy one that it would bolt up and work great?

Thanks!

Jeff
Title: TurboCoupe Brake Booster?
Post by: thewestie on February 08, 2011, 09:32:57 AM
I went with a 87 mustang gt one But I did a v8 swap. So it depends on your swap
Title: TurboCoupe Brake Booster?
Post by: bigbada1 on February 08, 2011, 09:49:08 AM
I used an mustang booster it is smaller around and i was able to use a firewall clutch cable adjuster. I also went with the SVO MC (larger bore) Had to do some repiping but brakes work great.
Title: TurboCoupe Brake Booster?
Post by: t3skidoo on February 08, 2011, 01:53:00 PM
23027,  do you mean "booster" or "master cylinder"?

I'd be interested in getting a part number for the smallest vaccuum brake booster that a bolt-in.
Title: TurboCoupe Brake Booster?
Post by: 88turbo on February 08, 2011, 06:07:18 PM
when I did mine I used a booster from an 85 bird and a master from an SVO mustang.  there is a write up on the nato board here http://www.turbotbird.com/techinfo/Converting_TC_ABS_MC_to_Vacuum_Assist_Brakes.htm

hope this helps.
Title: TurboCoupe Brake Booster?
Post by: 23027 on February 08, 2011, 10:37:08 PM
Oooooohhh I see now! Composed of two parts, brake booster is the large round part, the brake master is what lines hook up to....

I was talking about the brake master cylinder! I see it's pretty simple and did find info that the TC ones are huge and have connections because of the ABS system.

Learning every day :)
Title: TurboCoupe Brake Booster?
Post by: Loaded87IROC on February 09, 2011, 11:35:27 AM
The 87-88 Turbo Coupe unit is different than the regular vacuum assisted braking system found on earlier models.  It uses an electric pump to pressurize the brake fluid into a reservoir and stores it there under pressure until you press the brake.  There is no separate boosters on these models and the ABS stuff is built into the same unit. 

Check out the following NATO article for more info on the system and troubleshoot it if you decide to. 
http://www.turbotbird.com/techinfo/TEVES%20II%20ELECTRO-HYDRAULIC%20BRAKING%20SYSTEM%2087-88%20TCs.htm

Also, here is a how-to article on how to convert to the earlier style brake system (opens as a download)
http://www.turbotbird.com/techinfo/Convert_ABS_to_Vacuum.doc
Title: TurboCoupe Brake Booster?
Post by: 23027 on February 10, 2011, 12:08:40 AM
Nah, I'm not keeping the ABS in this engine swap.

Thanks for all the responses! I ordered the 89 mustang booster and an svo master. Going to go by that tutorial. I was suprised that my local Lordco had them for about as much as it is to buy online. $30 for a master, $120 for the booster
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