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Disc Brake Conversion

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Old Apr 4, 2007 | 01:28 PM
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Disc Brake Conversion

Does anyone make a rear axle disc brake conversion for my 94 F150 4X4?
 
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Old Apr 4, 2007 | 01:49 PM
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I thought, but am not sure on this, that the Explorer rear disks would work. Does anyone know for sure?
 
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Old Apr 4, 2007 | 07:30 PM
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Different width and different bolt pattern. One's easy to fix, one's not.

I think jeffsbroncograveyard.com makes a kit.
 
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Old Apr 4, 2007 | 08:47 PM
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Do the newer F-series (99+) have discs in the rear?

If so, swap the spindles, calipers, rotors, wheels and tires front and rear and call it a day.
 
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Old Apr 4, 2007 | 09:35 PM
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Some of them do, but they all have sealed front bearings (up until Dec. 05 I think) so it won't swap over.
 
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Old Apr 4, 2007 | 10:19 PM
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i seem to remember a forum member who had a kit and was still having problems getting it to work.
 
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Old Apr 5, 2007 | 07:11 PM
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Yes there are complete kits. I saw them while looking at sponsors. Or maybe summit. Bronco grave yard
Backing plate off off explore or new F150 may bolt to 8.8 rear if they have 8.8 .But do the axle protrude the same? All would have to do is get rotors redrilled. I'll be takin some measurements tomorrow.
 
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Old Apr 5, 2007 | 07:16 PM
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ok, the explorers use a 8.8 but the bolt pattern is 5 on 4.5 , a friend told me that the new body fseries is actually the same bolt pattern but uses metric designation and studs. i dont know this for fact. but i do know they are prevlent trucks with disk rears. i suppose it could be a fun project , as i really hate drums
 
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Old Apr 5, 2007 | 09:07 PM
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Originally Posted by andym
Some of them do, but they all have sealed front bearings (up until Dec. 05 I think) so it won't swap over.
Okay. I was suggesting swapping the whole front spindles... reaming the ball joint holes if necessary - so the front spindles and rear axle are the newer style parts then he'll have discs all around.

Maybe the drums stink on the F150's... to be honest, I've never really had a problem with the drums on my F350 crewcab... they seem to last an incredible amount of time though the shoes themselves are good for about 80k if most of that mileage is unloaded. Loaded obviously there put to work.

The only thing I cannot stand about the brakes in this vintage are the rear-only anti-locks. Why? Because I can easily lock them anyway even with the system functioning "correctly". But that's a different gripe for another thread.
 
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Old Apr 6, 2007 | 01:10 PM
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Originally Posted by frederic
Okay. I was suggesting swapping the whole front spindles... reaming the ball joint holes if necessary - so the front spindles and rear axle are the newer style parts then he'll have discs all around.
I see. That would be a cool trick. I wonder if it could be done?

Maybe the drums stink on the F150's... to be honest, I've never really had a problem with the drums on my F350 crewcab... they seem to last an incredible amount of time though the shoes themselves are good for about 80k if most of that mileage is unloaded. Loaded obviously there put to work.
The sterling drum brakes aren't much different from the 8.8" and 9" setups. I don't think they get used enough, to be honest. I think the brake system in these trucks is good except for the fact that the front is doing more work than it needs to. I've taken the factory retaining clips off trucks with 100k-plus miles and found nearly new shoes.

The only thing I cannot stand about the brakes in this vintage are the rear-only anti-locks. Why? Because I can easily lock them anyway even with the system functioning "correctly". But that's a different gripe for another thread.
Ford's RABS blows chunks. I agree completely.
 
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Old Apr 6, 2007 | 01:13 PM
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Originally Posted by gustang818
Yes, but I was talking taking the backing plate/caliper mounting flange off the explorer and using it on the pick-up, not using the whole rear end.
Ok, I see. I think that people would be doing this a lot more often if it were feasible though. There wouldn't be any need to buy expensive conversion kits if all you needed was that. There must be a reason that it can't be done easily, but I'm spacing out on what disc brakes on an explorer look like right now.
 
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Old Apr 6, 2007 | 08:20 PM
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the problem with explorer parts is they are not the right bolt circle i wouldnt want that heavy of a truck ridign around on any smaller than it is now
 
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Old Apr 6, 2007 | 08:45 PM
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Originally Posted by frederic
Maybe the drums stink on the F150's... to be honest, I've never really had a problem with the drums on my F350 crewcab... they seem to last an incredible amount of time though the shoes themselves are good for about 80k if most of that mileage is unloaded. Loaded obviously there put to work.
The 150 drums are fantastic too when in proper adjustment. I stopped looking at the conversion once I adjusted the drums on my 96. The braking power is great. The 4 disc would be nice, but the work is hefty. You can get a 97-04 8.8 with discs but you have to reweld the shock mounts from what I researched.

Mike
 
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Old Apr 6, 2007 | 10:14 PM
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I tried unsucessfully to search out the elusive explorer conversion & after numerous unrelated returns I just gave up & started going back page by page in the axle/brake forum.

I came across one member who aparently did the junk yard conversion of the Currie set up.

https://www.ford-trucks.com/user_gal...&albumid=13256

I Pm'd him a request to corespond with some questions not answered in the original thread response, but got no reply.

The diagrams I have on cd (94-95) show a different shaped mounting flange on the axle tubes. The explorer has a roughly rounded diamond shape while the 150 has a rounded rectangular shape. So I guess the critical peice of knowlege would be what explorer years has the same backing plate as the 150. You can see what he does for drilling the lug pattern& turning down the axel flange.

He uses 98 hoses but does that mean the whole set up is sourced from a 98?

I'd also like to know what the resoning for using 2 right side hoses vs 1 right, 1 left.

Also what was used to mate up the emergency brake & what kind of proporting valve was used & where plumbed.
 
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Old Apr 7, 2007 | 12:13 AM
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Originally Posted by Scndsin
The diagrams I have on cd (94-95) show a different shaped mounting flange on the axle tubes. The explorer has a roughly rounded diamond shape while the 150 has a rounded rectangular shape. So I guess the critical peice of knowlege would be what explorer years has the same backing plate as the 150. You can see what he does for drilling the lug pattern& turning down the axel flange.
The two big issues I see are whether the Explorer disc brake backing plate/caliper brakets will mount to the F-150 8.8 axle flange and finding rotors with a 5 x 5-1/2" bolt circle. I found this company that manufactures its own caliper brackets for rear disc brake conversions on 8.8" axles (they use GM calipers/rotors). The important information is that if you click on the links for both the Explorer and the F-150/Bronco, the diagrams they have of the axle flanges show the bolt pattern is the same at 2" x 3-9/16"
http://www.tsmmfg.com/Ford_truck_rear_axles.htm

If you order rotors from Currie you can specify wheel bolt pattern (up to 6 x 5 1/2") and stud hole size that you would like drilled in the rotors. The cost of new rotors may balance out against the cost of machining for those of us who don't have a machine shop connection.
 
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