my dad has a 2001 e-150 conversion van. i want to get drilled and slotted rotors but when i look online i get pictures of rotors which slide over the lugs and ones with the lugs on them. my van has the lugs on them and the bearings in hub on the rotor. are there 2 styles or is it just a generic picture?

 

4 wheel discs?
You asking about fronts or rear?

Are you road racing a van? Why drilled and slotted rotors? Know that drilling rotors and slotting rotors removes surface area and actually decreases braking potential.
Drilled rotors are designed to keep the braking surface cool, as is the slotted one. This is only a fix for a rotor that experiences super high temps. Braking perfrmance stays consistant under high temps.
Most vehicles like vans, will never see this type of abuse, and will not benifit from the slotted or drilled rotor. Fact is braking performance will fall off under normal driving.

 

the van is a full size conversion van. so it has the tv and coutch and captin chairs. my dad does alot of hill driving and experiences hard braking down hills with his boat behind him. so there is alot of heat build up and the rotors constantly warp. new to discard. i just need to know if there are 2 types... ones that go over the studs? cause pictures when i look for drilled slotted rotors i am shown 2 pictures. ones that go over studs and ones that have the studs and bearing races in them. mine have the studs and races in rotor. and i know about the braking efficency... but if you want to get technical the gasses from the pads heating up will actually cause the pads to push away from the smooth surface rotors. thats why they are drilled to let the gasses escape

 

With regards to rotors, I have previously run Brembo OEM replacement rotors that are cryogenically treated at Diversified Cryogenics, making them almost as hard as stainless steel. Unfortunately, Brembo, Powerslot, Raybestos, Bendix, Hawk etc. are all purchasing their rotors from the same foundary in China (with the exception of the $300 each composite high end units for Ferrari, Porsche, etc). I am presently running “Frozen Rotors” from Diversified Cryogenics 888-323-8456. They have a web site at Frozen Rotors - High Performance Brake Pads, Brake Rotors. They purchase the highest grade rotors made, laser mic them for quality, scrap the ones that are out of spec and cryogenically treat the good ones which are now as strong as stainless. They will also slot and cross drill the rotors for you. Their service, price and quality is excellent as well.

For street use, slotted/drilled rotors are just “cheese-graters” for the brake pads IMHO, because unless you are involved in true racing conditions, the brake linings do not produce the gases which slotted/drilled rotors are designed to relive. In some cases, brake testing indicated reduce brake efficiency in street-based operations using slotted/drilled rotors when equal comparisons were made. The staff at carbo can speak to you as well regarding those options, but I am very satisfied with the performance & wear of these products.

 

Those made in China rotors (Motorcraft for my 05) really are lousy looking castings. If I had of known I wouldn't of used them. Have heard great things about Frozen rotors. Thats what I'll go with next time for sure.

 

Is he using engine braking? Even turning OD off downhill can make a significant difference.

 

get a hold of the guys at tire rack.
i am using the Brembo OEM replacement (smooth) rotors on all four wheels and the Hawk LTS pads....love them - quiet, NO dust, great stopping power and little fade.

 

thanks for all the info. ill tell me pops about this. but my van is a rear drum and not 4wheel disk. im sure that helps with keeping alot of the braking off the front rotors. still noone has answered my question... ARE THERE 2 DIFFERENT STYLES OF FRONT ROTORS? ones with the bearing retainer formed to the rotor, or/and a rotor that would slide over the hub bearing. keep in mind this is a 2wd van, thanks

 

Lucky:
front rotors which slide over the lugs = 4wd
front rotors with the lugs on them and the bearings in the rotor = 2wd

 

and one more question. how will i figure out if its 2 wheel abs or 4 wheel abs. the front rotors do have sensors and a reluctor wheel and the rear has 1 sensor on the diff and a single brake line to both rear drums... so what would this be my fellow FORD MEN?

 

I would think if you have sensors front and rear you have four wheel ABS.