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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Mach 1 Caliper Install/Upgrade

  • Thread starter Thread starter toyman
  • Start date Start date Jun 26, 2010
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toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 26, 2010
#1
  • Jun 26, 2010
  • #1
I have purchased a set of Mach 1 calipers with brackets and was wondering if there is anything else needed other than the 13" rotors. Earlier posts made reference to kit M-2300-Q but that part is no longer in the FRPP catalog. Was that a rotor and caliper kit or did it include other hardware?
 

Husky44

10 Year Member
Sep 27, 2006
865
104
74
Tacoma, WA
Jun 26, 2010
#2
  • Jun 26, 2010
  • #2
I won't swear to this, but you'll most likely need different banjo bolts, if not new lines. When I did my swap, I went ahead and put in braided SS lines to the caliper. IIRC there's a different thread pitch from the stock calipers to the new ones. SS braided lines aren't that expensive, and it's an easy "while I'm at it" change.
 
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wytstang

Mustang Master
Mar 14, 2004
4,988
4
78
Summerville,SC missing South Fl. weather :(
Jun 26, 2010
#3
  • Jun 26, 2010
  • #3
toyman said:
I have purchased a set of Mach 1 calipers with brackets and was wondering if there is anything else needed other than the 13" rotors. Earlier posts made reference to kit M-2300-Q but that part is no longer in the FRPP catalog. Was that a rotor and caliper kit or did it include other hardware?
Click to expand...
It's a complete kit with everything you need to make the switch
Ford Racing Brake Kit for 1994-95 SVT Cobra [M-2300-Q] - $559.95 : Powered By Ford - Your only high performance parts supplier for your Ford car or truck, When you want it done right and done well there is only one Powered By Ford!
Everything you need is pictured including the cobra specific master cylinder. If you already have a tube flare kit and know how to use it, you will have to switch the MC lines to the prop. valve. Or take the easy route and buy MM's swap lines Master Cyl. Adapter, 94-95 Cobra M/C, 94-95 w/Stock Prop. Valve [MMBAK-7] : Maximum Motorsports, the Latemodel Mustang Performance Suspension Leader!
Best $20 I spent.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 26, 2010
#4
  • Jun 26, 2010
  • #4
wytstang said:
It's a complete kit with everything you need to make the switch
Ford Racing Brake Kit for 1994-95 SVT Cobra [M-2300-Q] - $559.95 : Powered By Ford - Your only high performance parts supplier for your Ford car or truck, When you want it done right and done well there is only one Powered By Ford!
Everything you need is pictured including the cobra specific master cylinder. If you already have a tube flare kit and know how to use it, you will have to switch the MC lines to the prop. valve. Or take the easy route and buy MM's swap lines Master Cyl. Adapter, 94-95 Cobra M/C, 94-95 w/Stock Prop. Valve [MMBAK-7] : Maximum Motorsports, the Latemodel Mustang Performance Suspension Leader!
Best $20 I spent.
Click to expand...

I'm a little confused. Is it necessary to change the Master Cylinder? I didn't think that was necessary. The adapter from MM is to connect the Cobra MC to the GT proportioning valve. Is that correct?
 
W

wytstang

Mustang Master
Mar 14, 2004
4,988
4
78
Summerville,SC missing South Fl. weather :(
Jun 27, 2010
#5
  • Jun 27, 2010
  • #5
If you can deal with a very stiff peddle feel then no you don't have to and yes the adapter connects a cobra MC to the stock prop. valve. I did it all at once and the peddle feel is just like stock.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 27, 2010
#6
  • Jun 27, 2010
  • #6
The thought had occurred to me that the M-2300-Q kit was primarily made for those Fox owners wanting to upgrade. So there is a difference between the GT and Cobra MC.
 

nmcgrawj

Advanced Member
Sep 28, 2003
3,651
4
68
Indianapolis, IN
Jun 27, 2010
#7
  • Jun 27, 2010
  • #7
I have to say i dont really care for the stiffer pedal after i made the swap.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 28, 2010
#8
  • Jun 28, 2010
  • #8
Anyone have a link to a source for the 94-95 Cobra Master Cylinder. Summit and Latemodel Restoration show only 96-98 Cobra MC as far as I can tell.
 

LRSjmac

Premium Sponsor
Sep 9, 2008
335
0
17
Hewitt, Tx
Jun 28, 2010
#9
  • Jun 28, 2010
  • #9
toyman said:
Anyone have a link to a source for the 94-95 Cobra Master Cylinder. Summit and Latemodel Restoration show only 96-98 Cobra MC as far as I can tell.
Click to expand...

Here ya go!

1994-95 Mustang Cobra Brake Master Cylinder by Centric at LRS - Same Day Shipping!
 
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wytstang

Mustang Master
Mar 14, 2004
4,988
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Summerville,SC missing South Fl. weather :(
Jun 28, 2010
#10
  • Jun 28, 2010
  • #10
So there is a difference between the GT and Cobra MC.
Click to expand...
GT- 1 1/16 bore
Cobra- 15/16 bore
GT needs a higher fluid pressure to compensate for the single piston caliper. The Cobra MC uses less fluid pressure since it uses a dual piston caliper. My theory, if you have the stiff pedal (GT MC) you can't be using the cobra brakes to there full potential at all. You'd be better off leaving the stock brakes on there, it would stand to reason you would be overloading the brake system.
 

nmcgrawj

Advanced Member
Sep 28, 2003
3,651
4
68
Indianapolis, IN
Jun 28, 2010
#11
  • Jun 28, 2010
  • #11
While it is stiffer...it definitely stops better than it did stock.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 28, 2010
#12
  • Jun 28, 2010
  • #12
wytstang said:
GT- 1 1/16 bore
Cobra- 15/16 bore
GT needs a higher fluid pressure to compensate for the single piston caliper. The Cobra MC uses less fluid pressure since it uses a dual piston caliper. My theory, if you have the stiff pedal (GT MC) you can't be using the cobra brakes to there full potential at all. You'd be better off leaving the stock brakes on there, it would stand to reason you would be overloading the brake system.
Click to expand...

Are you certain you have that correct? If the force applied is a constant the pressure should be greater with the smaller bore. The dual piston caliper I would think is better because the force applied is more evenly distributed across the larger pads. In my case, I'm trying to improve the braking as I'm starting with a smaller (lower) vacuum assist due to my cam.
 
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wytstang

Mustang Master
Mar 14, 2004
4,988
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78
Summerville,SC missing South Fl. weather :(
Jun 28, 2010
#13
  • Jun 28, 2010
  • #13
Wouldn't the larger bore create more pressure (hence the stiffer pedal)?
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 29, 2010
#14
  • Jun 29, 2010
  • #14
wytstang said:
Wouldn't the larger bore create more pressure (hence the stiffer pedal)?
Click to expand...

I'm thinking it's like the heel of a shoe exerting pressure on the floor. If you had a 100 llb person standing in a 1 sq in heel the pressure on the floor would be 100 psi (100lb/1 sq in). However, if the heel were reduced to 1/2 sq in the pressure would increase to 400 psi (100lb/.25 sq in). I think that's the same principle used in hydraulic jacks.
 

nmcgrawj

Advanced Member
Sep 28, 2003
3,651
4
68
Indianapolis, IN
Jun 29, 2010
#15
  • Jun 29, 2010
  • #15
That makes sense richard. But why is the pedal stiffer with the bigger mc?


It seems the GT MC would need more pedal travel to equal the higher pressure of the cobra mc.
 
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wytstang

Mustang Master
Mar 14, 2004
4,988
4
78
Summerville,SC missing South Fl. weather :(
Jun 29, 2010
#16
  • Jun 29, 2010
  • #16
nmcgrawj said:
That makes sense richard. But why is the pedal stiffer with the bigger mc?


It seems the GT MC would need more pedal travel to equal the higher pressure of the cobra mc.
Click to expand...
That's what I'm not understanding, it would seem the GT MC would be to soft and drop to the floor.
 

nmcgrawj

Advanced Member
Sep 28, 2003
3,651
4
68
Indianapolis, IN
Jun 29, 2010
#17
  • Jun 29, 2010
  • #17
are the hard lines on the cobra different? Prop. valve?
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 29, 2010
#18
  • Jun 29, 2010
  • #18
nmcgrawj said:
That makes sense richard. But why is the pedal stiffer with the bigger mc?
Click to expand...

Less mechanical advantage?


It seems the GT MC would need more pedal travel to equal the higher pressure of the cobra mc.
Click to expand...

I'm not certain that pedal travel is important unless you are bouncing off the floor. Pedal travel will be determined by the volume of fluid needed to move the pistons and in turn the pads to full contact with the rotors. This may be where the proportioning valve comes into play but IDK for sure.
 

Chythar

Recently finished repairing my rear
20+ Year Stangneter
Aug 26, 2004
2,373
140
113
Foothill Ranch, CA
Jun 29, 2010
#19
  • Jun 29, 2010
  • #19
nmcgrawj said:
are the hard lines on the cobra different? Prop. valve?
Click to expand...

Ran into this on my Cobra conversion. The fittings on the prop valve are different sizes, and are swapped on the Cobra. You could technically bend the hard lines to switch them, but then you'd unbalance the brake pressure front to rear. Remember, it's a proportioning valve - more pressure to the front brakes, which do most of the work on a front-heavy car. Supposedly this fitting swap was done by Ford to keep from installing the wrong master cylinder on the assembly line.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jun 29, 2010
#20
  • Jun 29, 2010
  • #20
nmcgrawj said:
are the hard lines on the cobra different? Prop. valve?
Click to expand...

It's my understanding that the coupling threads are different on the Cobra MC and that's why an adapter kit is available. Post #2 by Husky44 indicated that the thread pitch is different on the Cobra MC.
 
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