87-93 Ford Fox Body Mustang Brake Upgrades
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Master Cylinder Upgrades:
The stock master cylinders on the 87-93 Mustangs are marginal with just the install of larger front 73 calipers. The 3 port design is really to blame with the small 21mm bore. If you swap to rear disc, then a new MC is needed! There are 4 common MC upgrades out there for the Mustangs: the Lincoln/SVO unit, the '94-98 V6 unit, the '93 Cobra unit and the '94-95 Cobra units. Each is a 2 port MC, so a conversion will be needed but they are all different bore sizes. Which one is the correct unit for you? Read on: Here is a more specific information on the master cylinders mentioned: '84-86 SVO - (SAE Threads) 1 1/8" bore, old style aluminum reservoir unit. no low fluid sensor. This is the same as the 84-90 Lincoln Mark 7. The difference is usually the SVO is aluminum, and the Lincoln can be a cast iron unit. The aluminum is what you want to keep the weight down. '85 Towncar - (SAE Threads) 1" bore, old style aluminum reservoir unit. no low fluid sensor. '93 Cobra - (metric threads) 1.00" bore '94-95 GT/V6 - (metric threads) 1 1/16" bore, stock plug in for the low fluid sensor '94-98 V6 - (metric threads) 1 1/16" bore, stock plug in for the low fluid sensor '94-95 Cobra - (metric threads) 15/16" bore, stock plug in for low fluid sensor. Ports are reversed thread sizes from 87-95 LX/V6/GT '99 V6 - (metric threads) 1.000" and 1.006" bore. Can be converted to work for the low fluid sensor on the fox3 cars 96+ V8 Units - These are hydroboosted and the mounted flange is vertically vs horizontal required for a vacuum booster. They will NOT work
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10/23/2010 12:53 AM
87-93 Ford Fox Body Mustang Brake Upgrades
http://home.comcast.net/~mjbobbitt/mustang/page11.html
Low fluid sensor notes: The stock '87-93 master cylinder has a plastic reservoir with a low fluid indicator. The '93 Cobra and the...