Rear Disc Install

qhkajlog · 09-08-2002, 12:09 PM

I installed rear disc brakes on a 90 GT. The brakes are out of an 87 Thunderbird Turbo Coupe. The brakes work, but I need to know anything else I need to do, master cylinder, proportioner valve, etc..... Also will the emergency brake cables out of a SVO Mustang work with my setup. Any help will be appreciated. I went to the website that I will probably be sent to, but need this broken down further in shadetree terms. Thanks

qhkajlog · 09-08-2002, 09:25 PM

Come on nobody knows. I need some help. Someone has to know or has already done this install. Please help if you know. Any and all help will be greatly appreciated. This is the site I know I can get an answer. Thanks

84LX89GT · 09-09-2002, 02:35 PM

The guy who owned my car before me installed a thunderbird turbo coupe rearend in it and from what i can see, he put in the master cylinder, got rid of the stock valve that applies the rear brakes first before the front(forgot name of valve), it's in the proportioning block though, he used e-brake cables from the turbo coupe as well i think. I'm not exactly sure though. The E-brake lines from an SVO should work because it's the same system. He also used as many of the brake lines from the turbo coupe as he could, but re-routed from the master cylinder back to the hose from the rear axle housing.
You can also add a proportioning valve for better control, although my brakes work pretty good without it, you'd probably be able to stop faster by being able to apply more pressure to the front.
Hope this helps,
Rick

jrgoffin · 09-13-2002, 11:47 AM

Gut the stock prop-valve and put the FRPP plug in it and add an adjustable prop valve. I went with the SVO MC since I have the big calipers up front. The e-brake cables have to come from FRPP since the SVO cables have different ends (I used '93 GT cables and added the special bracket that holds them in the trans tunnel). For the rear axle, I just re-bent new lines and used the '94 GT caliper hoses. Hope that helps to start!

09-08-2002, 12:09 PM	#1
qhkajlog Registered Member Join Date: May 2002 Location: San Diego Posts: 10	Rear Disc Install I installed rear disc brakes on a 90 GT. The brakes are out of an 87 Thunderbird Turbo Coupe. The brakes work, but I need to know anything else I need to do, master cylinder, proportioner valve, etc..... Also will the emergency brake cables out of a SVO Mustang work with my setup. Any help will be appreciated. I went to the website that I will probably be sent to, but need this broken down further in shadetree terms. Thanks

09-09-2002, 02:35 PM	#3
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	The guy who owned my car before me installed a thunderbird turbo coupe rearend in it and from what i can see, he put in the master cylinder, got rid of the stock valve that applies the rear brakes first before the front(forgot name of valve), it's in the proportioning block though, he used e-brake cables from the turbo coupe as well i think. I'm not exactly sure though. The E-brake lines from an SVO should work because it's the same system. He also used as many of the brake lines from the turbo coupe as he could, but re-routed from the master cylinder back to the hose from the rear axle housing. You can also add a proportioning valve for better control, although my brakes work pretty good without it, you'd probably be able to stop faster by being able to apply more pressure to the front. Hope this helps, Rick __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

09-13-2002, 11:47 AM	#4
jrgoffin Registered Member Join Date: May 2002 Location: The Midwest Posts: 79	Gut the stock prop-valve and put the FRPP plug in it and add an adjustable prop valve. I went with the SVO MC since I have the big calipers up front. The e-brake cables have to come from FRPP since the SVO cables have different ends (I used '93 GT cables and added the special bracket that holds them in the trans tunnel). For the rear axle, I just re-bent new lines and used the '94 GT caliper hoses. Hope that helps to start! __________________ '90 LX Too many mods... Rear-Disc tech

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09-08-2002, 09:25 PM	#2
qhkajlog Registered Member Join Date: May 2002 Location: San Diego Posts: 10	Come on nobody knows. I need some help. Someone has to know or has already done this install. Please help if you know. Any and all help will be greatly appreciated. This is the site I know I can get an answer. Thanks