15/16" master cylinder vs 1" w/88 Booster

[racerraj]

I have the Cobra Brakes in my 88 now. I just put them in from the V6 single piston 95 brakes. I have a 1 1/16" Master Cylinder now, but it's WAY TOO HARD! Was acceptable with the old brakes. Will the 1" 93 cobra Master Cylinder be enough, or should I look at getting a 10mm to 12mm and a 12mm to 10mm adapter and putting a 15/16" Master Cylinder in it. That's what they came with I believe.

I don't really want a larger Booster, Thanks for any tips.

 

[Mustang5L5]

What do you have for rear brakes??? Sn95 calipers out back as well??

 

[southbronx]

If you haven't done so, use the info at the svo73mm website http://mjbobbitt.home.comcast.net/mustang/mc.html to help you with your setup.

 

[racerraj]

I ordered the 3/2 conversion from him, and the website in PDF form. Quite useful, but it doesn't hit directly on my question. However, in researching adapters, I can't find what I would need , and I don't want to cut and reflare the lines, so it's begining to look like I'll try the 93 Cobra Master Cylinder with the 1" bore.

His website helped me tremendously when I did the conversion to the SN95 V6 brakes.

And yes, I have SN95 brakes in the rear too. Also gutted the stock Prop valve, and installed an adjustable.

Thanks,
Roger

 

[88GThatchback]

Racerraji - I just put cobra brakes on the front and back of my 88. I used a 93 cobra MC which is 1". The petal feels great. Not much different than stock.

 

[87'GTstang]

The 1" bore should be a nice compromise. With the 15/16" bore, you may not notice too big of a difference but I think you would just be going in the opposite direction but with another problem - too much pedal travel needed to apply the brakes.

 

[racerraj]

88GThatchback,

Do you still have the stock booster? Are you running a cam? I have the E-Cam, not a lot of vacuum, I was thinking of adding a Vacuum Canistor if I get the pedal feel good while it has vacuum.

Thanks again for the replies!

 

[mineralgsvt]

I'm running the '93 Cobra MC with stock booster.. Bullit Brakes F/R.. pedal feel is definitely not hard.. actually feels pretty good!

Stock cam here..

Good Luck!

 

[racerraj]

Mineralgsvt & 88GThatchback,
Did you notice a difference in stopping distance and/or stopping control with the 13" brakes? I didn't notice any real difference going from stock to the rear SN95 disk and SN95 Single piston fronts.

Thanks,
Roger

 

[mpswirl]

Racer i just switched my whole system including booster, and when i went with the disk rears i had to use a adjustable proportioning valve because the pressure needs to be different in the rear.

 

[mineralgsvt]

Mineralgsvt & 88GThatchback,
Did you notice a difference in stopping distance and/or stopping control with the 13" brakes? I didn't notice any real difference going from stock to the rear SN95 disk and SN95 Single piston fronts.

Thanks,
Roger

I noticed a huge difference, but I went from stock '89 brakes to the 4 wheel disk Bullits..

Good Luck!

 

[racerraj]

MPSwirl, I have the adjustable prop valve, and gutted the factory one.

I'm ordering the 93 Cobra 1" Master today, no one around has them in stock. When I get it in I'll update.

Thanks again,
Roger

 

[2000xp8]

I now have cobra disc brakes, and i used the master cylinder off a real 93 cobra, stock 1990 booster, and my cam is more choppy than an E.
Feels good, pretty much like stock.