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Brake swap master cylinder

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Old 09-23-2012
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Brake swap master cylinder

I picked up a 8.8" rear axle assembly with disc brakes off an 04 Expo Sport Trac that I'm working on to put on my 03 2WD Ranger. Will I have any problems with brake balance if I use the master cylinder that's in my Ranger now or will I need to get one off an Expo that's made to have discs all around?
 
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Old 09-23-2012
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You need the master from the expo your stock ranger master wont work.
 
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Old 09-23-2012
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Originally Posted by Clyhead View Post
I picked up a 8.8" rear axle assembly with disc brakes off an 04 Expo Sport Trac that I'm working on to put on my 03 2WD Ranger. Will I have any problems with brake balance if I use the master cylinder that's in my Ranger now or will I need to get one off an Expo that's made to have discs all around?
My factory 03 master works fine with 4 wheel discs. There should be no problem with front/rear balance because 2001and newer Rangers use Electronic Brake Force Distribution instead of a traditional proportioning valve. EBFD software compares front-to-rear tire slip ratios and does brake proportioning through the ABS. I have 11.25" Mustang SVO rear rotors and Cadillac Eldorado calipers on my 2003 and even this mismatched system works great with the EBFD. I helped install Explorer brakes on a friend's 2004 Ranger and the proportioning was just as good.
 
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Old 09-23-2012
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Originally Posted by rwenzing View Post
My factory 03 master works fine with 4 wheel discs. There should be no problem with front/rear balance because 2001and newer Rangers use Electronic Brake Force Distribution instead of a traditional proportioning valve. EBFD software compares front-to-rear tire slip ratios and does brake proportioning through the ABS. I have 11.25" Mustang SVO rear rotors and Cadillac Eldorado calipers on my 2003 and even this mismatched system works great with the EBFD. I helped install Explorer brakes on a friend's 2004 Ranger and the proportioning was just as good.
Wow really that's neat! Wish my 87 was that simple!
 
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Old 09-23-2012
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Bob you mentioned 2001 and up. Will the factory master cylinder still work for 4 wheel disks on a 98?
 
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Old 09-23-2012
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Originally Posted by littlered View Post
Bob you mentioned 2001 and up. Will the factory master cylinder still work for 4 wheel disks on a 98?
I haven't done a pre-2001 swap but my guess is that the 98 MC would be compatible. However, I question whether the original Ranger proportioning valve would be correct for the rear discs - it might need an adjustable one.
 
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Old 09-24-2012
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Thanks for the info! I still need to buy new rotors, calipers, pads, hoses and everything for the parking brake except the cable so I really don't want to buy more stuff than I have to
 
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