Which Master Cyl.

BLUE91GT · November 5th, 2008, 11:04 AM

I am getting ready to switch my fox over to 5 lug with 95 spindles and 13 inch cobra brakes front and rear. I have read the brake sticky, and would like to hear from the people who have done this swap. Is there a way to switch to front and rear disc and not have to use an after market proportioning valve. What is the best master cyl to use on the swap. Thanks Mark

ryans88gt · November 5th, 2008, 11:07 AM

SVO style master cylinder.

84-86 MASTER CYLINDER, SVO, 1-1/8" BORE MUSTANG

BLUE91GT · November 5th, 2008, 03:11 PM

Cool thanks for the info!!! Do I need a different porportioning valve for rear disc???

hopper · November 5th, 2008, 03:13 PM

I think we just pulled it out and it worked fine,
maybe I am full of shit I really can't remember, but that does ring a bell

Haggis13 · November 5th, 2008, 05:43 PM

I'm pretty sure you have to swap out the proportioning valve on a fox disc swap. It's not expensive, and easy to do.

I had a MC from a 95 Mustang, which I found made the pedal really stiff, then I switched to a 93 Cobra booster and MC - softer pedal feel, and increased responsiveness IMO.

vfast · November 5th, 2008, 05:50 PM

I would get an adjustable proportion valve

1slo5.0 · November 5th, 2008, 08:34 PM

Originally Posted by Haggis13

I'm pretty sure you have to swap out the proportioning valve on a fox disc swap. It's not expensive, and easy to do.

I had a MC from a 95 Mustang, which I found made the pedal really stiff, then I switched to a 93 Cobra booster and MC - softer pedal feel, and increased responsiveness IMO.

+1 The 93 Cobra brake booster and master cylinder works great. I have that set up in one of my cars with disc brakes all the way around and the car stops like a ZO6. The pedal is as soft as a Cadillac pedal.

00SoSlow · November 6th, 2008, 02:58 AM

some one want to pm me a complete list of all parts and the years off of what car is needed for a good 5 lug conversion... disc's all the way around!!!!!! plz and thank you

BLUE91GT · November 6th, 2008, 01:32 PM

Cool! Thanks for the info. I will get a 93 cobra master, booster, and proportining valve.

My next question is I have drum brakes now, and am going to rear disc. Do I need a whole new rearend, or can I get away with brackets???? Any suggestions??? Thanks Mark

ryans88gt · November 6th, 2008, 02:05 PM

WIth the SVO mastercylinder, you don't need anything else. That is the easy way to do it.

For the rear disk all you need is the calipers, brakets, rotors, pads, and you will have to get some brake line adapters. You do not need a new rear. The axles were longer on 93 cobras and SN95 cars, but you can get caliper brakets made specifically for a fox swap so that you can use the stock length axles.

BLUE91GT · November 6th, 2008, 02:22 PM

ryan88gt-

So I can keep my stock booster with the 84-86 svo master???

I am switching to 5 lug axels, can I buy 93 cobra axels and use regular brackets for the disc??? Thanks Mark

ryans88gt · November 6th, 2008, 08:38 PM

yes about the booster, I had it on my last car

you can use SN95 axles and brakes, cobras were 4 lug.

00SoSlow · November 7th, 2008, 02:43 AM

isn't the sn95 axles longer?

Haggis13 · November 7th, 2008, 06:11 PM

Get some Fox length 5 lug axle shafts and the brackets off the Internet. SN95 shafts are long, and if you run a big fat tire in the back, your outer fenders are going to rub the tire.

Since we're on this topic:

Anybody who has cut their e-brake spring and welded it a la SN95 style - how do you keep pressure on the fucking thing so your e-brake light doesn't keep flashing on and off since the original spring gets cut out??

vfast · November 7th, 2008, 09:13 PM

you will also need to change the emergency brake cables

ryans88gt · November 7th, 2008, 10:37 PM

THe SN95 axles are 0.4 inches longer. Your wheels will not rub unless they are very close to rubbing already. And since you are buying wheels anyway (going 4 lug to 5 lug) if you get the correct backspace there is no reason why everything wouldn't fit.

The axles need to be longer to run the SN95 brakes or you need expensive brackets.

Haggis13 · November 8th, 2008, 09:18 AM

Close - they're .75 inches longer per axle shaft.

IMO a lot of cars look funny because people don't buy the right rims for the back. If you change to SN95 spindles in the front, and use SN95 shafts, for the car to look right, you really need to buy front and rear rims with different offsets, or the car looks weird.

November 5th, 2008, 11:04 AM	#1
BLUE91GT Enthusiast 2002 Mustang GT Join Date: Sep 2008 Location: SONOMA COUNTY Posts: 508 iTrader: 1 reviews	Which Master Cyl. I am getting ready to switch my fox over to 5 lug with 95 spindles and 13 inch cobra brakes front and rear. I have read the brake sticky, and would like to hear from the people who have done this swap. Is there a way to switch to front and rear disc and not have to use an after market proportioning valve. What is the best master cyl to use on the swap. Thanks Mark

November 5th, 2008, 11:07 AM	#2
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	SVO style master cylinder. 84-86 MASTER CYLINDER, SVO, 1-1/8" BORE MUSTANG __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

November 5th, 2008, 03:11 PM	#3
BLUE91GT Enthusiast 2002 Mustang GT Join Date: Sep 2008 Location: SONOMA COUNTY Posts: 508 iTrader: 1 reviews	84-86 Svo Master Cool thanks for the info!!! Do I need a different porportioning valve for rear disc???

November 5th, 2008, 05:43 PM	#5
Haggis13 Enthusiast 1993 Mustang GT Join Date: Sep 2006 Location: Ottawa, Ontario, Canada Posts: 593 iTrader: 0 reviews	I'm pretty sure you have to swap out the proportioning valve on a fox disc swap. It's not expensive, and easy to do. I had a MC from a 95 Mustang, which I found made the pedal really stiff, then I switched to a 93 Cobra booster and MC - softer pedal feel, and increased responsiveness IMO. __________________ Bart 93 Black on Black GT Kenne Bell S/C GIVE 'ER!

November 5th, 2008, 05:50 PM	#6
vfast Banned Join Date: Aug 2005 Location: shimmy shack takeout Posts: 1,084 iTrader: 0 reviews	I would get an adjustable proportion valve __________________ EVERYONE IS ENTITLED TO MY OPINION:cool: 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter[COLOR="Red"]RIP[/COLOR]

November 5th, 2008, 03:13 PM	#4
hopper Regular Join Date: Apr 2007 Posts: 390 iTrader: 0 reviews	I think we just pulled it out and it worked fine, maybe I am full of shit I really can't remember, but that does ring a bell

November 6th, 2008, 02:58 AM	#8
00SoSlow Hardcore Enthusiast Join Date: Feb 2006 Location: Pewaukee, Wisconsin Posts: 1,340 iTrader: 0 reviews	some one want to pm me a complete list of all parts and the years off of what car is needed for a good 5 lug conversion... disc's all the way around!!!!!! plz and thank you __________________ 2000 V6 Performance Red @ Cardomain Was fun but a waste... 1987 LX Hatch \| Soon to be a 600hp monster

November 6th, 2008, 01:32 PM	#9
BLUE91GT Enthusiast 2002 Mustang GT Join Date: Sep 2008 Location: SONOMA COUNTY Posts: 508 iTrader: 1 reviews	Master Cool! Thanks for the info. I will get a 93 cobra master, booster, and proportining valve. My next question is I have drum brakes now, and am going to rear disc. Do I need a whole new rearend, or can I get away with brackets???? Any suggestions??? Thanks Mark

November 6th, 2008, 02:05 PM	#10
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	WIth the SVO mastercylinder, you don't need anything else. That is the easy way to do it. For the rear disk all you need is the calipers, brakets, rotors, pads, and you will have to get some brake line adapters. You do not need a new rear. The axles were longer on 93 cobras and SN95 cars, but you can get caliper brakets made specifically for a fox swap so that you can use the stock length axles. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

November 6th, 2008, 02:22 PM	#11
BLUE91GT Enthusiast 2002 Mustang GT Join Date: Sep 2008 Location: SONOMA COUNTY Posts: 508 iTrader: 1 reviews	master ryan88gt- So I can keep my stock booster with the 84-86 svo master??? I am switching to 5 lug axels, can I buy 93 cobra axels and use regular brackets for the disc??? Thanks Mark

November 6th, 2008, 08:38 PM	#12
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	yes about the booster, I had it on my last car you can use SN95 axles and brakes, cobras were 4 lug. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

November 7th, 2008, 02:43 AM	#13
00SoSlow Hardcore Enthusiast Join Date: Feb 2006 Location: Pewaukee, Wisconsin Posts: 1,340 iTrader: 0 reviews	isn't the sn95 axles longer? __________________ 2000 V6 Performance Red @ Cardomain Was fun but a waste... 1987 LX Hatch \| Soon to be a 600hp monster

November 7th, 2008, 06:11 PM	#14
Haggis13 Enthusiast 1993 Mustang GT Join Date: Sep 2006 Location: Ottawa, Ontario, Canada Posts: 593 iTrader: 0 reviews	Get some Fox length 5 lug axle shafts and the brackets off the Internet. SN95 shafts are long, and if you run a big fat tire in the back, your outer fenders are going to rub the tire. Since we're on this topic: Anybody who has cut their e-brake spring and welded it a la SN95 style - how do you keep pressure on the fucking thing so your e-brake light doesn't keep flashing on and off since the original spring gets cut out?? __________________ Bart 93 Black on Black GT Kenne Bell S/C GIVE 'ER!

November 7th, 2008, 09:13 PM	#15
vfast Banned Join Date: Aug 2005 Location: shimmy shack takeout Posts: 1,084 iTrader: 0 reviews	you will also need to change the emergency brake cables __________________ EVERYONE IS ENTITLED TO MY OPINION:cool: 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter[COLOR="Red"]RIP[/COLOR]

November 7th, 2008, 10:37 PM	#16
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	THe SN95 axles are 0.4 inches longer. Your wheels will not rub unless they are very close to rubbing already. And since you are buying wheels anyway (going 4 lug to 5 lug) if you get the correct backspace there is no reason why everything wouldn't fit. The axles need to be longer to run the SN95 brakes or you need expensive brackets. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

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November 8th, 2008, 09:18 AM	#17
Haggis13 Enthusiast 1993 Mustang GT Join Date: Sep 2006 Location: Ottawa, Ontario, Canada Posts: 593 iTrader: 0 reviews	Close - they're .75 inches longer per axle shaft. IMO a lot of cars look funny because people don't buy the right rims for the back. If you change to SN95 spindles in the front, and use SN95 shafts, for the car to look right, you really need to buy front and rear rims with different offsets, or the car looks weird. __________________ Bart 93 Black on Black GT Kenne Bell S/C GIVE 'ER!

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Which Master Cyl.

Which Master Cyl.

84-86 Svo Master

Master

master