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Old 08-28-2012, 06:58 PM
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E99 Brakes

I have a F250, manufactured 2/1998. I am need to replace my pads and rotors soon. I remember reading on here that the E99 brakes are different in some way from the 99.5-03 brakes but now I can't find that post. Can anyone tell me what/if any the difference between the two are and how I can tell if my truck for sure has the E99 brake set up so that I can pick up some rotors and pads and make sure I have the right ones before the trucks up on blocks.
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Old 08-28-2012, 07:14 PM
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The early 1999 have shallower front rotors because our hub assembly is different then the later models. I want to say its just the fronts that are different, but it was last summer when I did mine and just 100% sure. Maybe someone else will chime in to confirm.
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Old 08-29-2012, 04:08 AM
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There's a diffrence in the rears also, and you're right about the fronts, rotors and unit berrings have diffrent depth. The front is easy to convert, but you have to change both the unit berring and rotor at the same time. I've done the conversion, to keep all my trucks the same, so one spare unit berring on the shelf will work with all 3, and the newer unit berring is cheaper.

On the rear, on the early '99, the caliper is in front of the axle on one side, and in the rear of the axle on the other, I'm guessing this allows the same caliper to be used on both sides, unlike the newer ones, both calipers are on the rear of the rear axle, and are 'left' and 'right'.
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Old 08-29-2012, 05:01 AM
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Can you elaborate on the unit bearing conversion, do you have any part numbers or measurements.
also, do you have any measurements or units of the rotors for the e99

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Old 08-29-2012, 01:46 PM
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I definitly wish I had done the conversion before changing both wheel bearings. I dont remember price but it is way cheaper doing the whole conversion than doing the bearings. Specially since your doing rotors now, you will be much happier if you switch
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Old 08-29-2012, 04:10 PM
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Part numbers, no, I can't help you. But I can tell you what to ask for...

If you have an early '99 truck, and want to convert to the later stuff, you need the later unit berrings and rotors... ask for 2000 F-250 (or 350) single rear wheel (or dual rear wheel) (which ever you have, the only diffrence in the 2 is the lenth of the lug nut studs, shorter ones for the dual rear wheel, as the spacer bolts onto the DRW models and needs the clearance created by the shorter studs, same berring for F250 and F350)

Replace your unit berring and rotor as a package, and the caliper and it's mounting bracket will bolt right back on, not knowing the diffrence, as well as everything else, in my experiance. You can do one side at a time, as long as you change both the unit berring and rotor together. Naturally, if you replace the rotor, I'd put on new brake pads too, so they have a nice new rotor to work with.

Note: The later (2002-ish-on) trucks used a fine thread lug nut... early '99 lug nuts were the same corse thread as the 2000, so you're safe... I forget when they changed to the fine thread.
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