Drilled/Slotted Rotors...

[HollaGeo]

Thinking about buying a pair for my truck. Thoughts???

 

[Mi duckdown]

Re: Drilled/Slotted Rotors...

Costly. Why?

 

[swl]

Re: Drilled/Slotted Rotors...

I had a 97 Z28 that I put cross drilled rotors on. I never really noticed any difference. Someone once told me " If they work so well, howcome they dont use 'em in nascar?" Theoretically, It seems like they should run cooler, but in the real world.....

 

[Cannondale]

Re: Drilled/Slotted Rotors...

I think you'd get better braking performance from a set of proper brake pads, like the heavy duty variants produced specifically for towing, etc., from Wagner, EBC, Hawk, etc. Most are semi-metallic pads vs. the "ceramic" pads that come OE....pads like the Hawk HP SuperDuty, EBC Yellowstuff, Wagner SevereDuty. But, as they do enhance braking performance, they do tend to be louder and dust worse. Tradeoffs..........

Crossdrilled rotors, if done cheaply and/or incorrectly, can and do lead to premature brake rotor failure and very decreased braking power. Cross drilling is not favored for racing or other hard use as the holes are a source of stress cracks under severe conditions.

View attachment 82231


And remember, drilled and/or slotted rotors will wear your pads out quicker....

 

[DaNinja]

Re: Drilled/Slotted Rotors...

I've thought of upgrading the brakes on the 99' Dodge 1500.
For $525 a local shop will pretty much rebuild the stock brakes.

For a $100-$200 more I could upgrade to a nice SSB setup if I do it myself.
Upgrading the rear drums to disc has been banted around, too.

I don't think brakes or front ends have ever been a bragging point for that generation of Dodge
trucks and the fact that I'm running 20" wheels and bigger tires doesn't help.

 

[EJ42955]

Re: Drilled/Slotted Rotors...

Cross drilled rotors have a tendency to create cracks, leading away from the holes.
That's why you'll see "Dimpled" and slotted, these days.

As for the discussion about converting rears to disc, pay close attention to the type of parking brake the set up uses. The style with the 'horse-shoe' type of shoe pushing out against the inside surface of the rotor (like a drum brake), doesn't self adjust very well. I hate them on my truck. I'd really like to find a parking brake rotor that bolts to the pinion input, and has a mechanical caliper that grips the disk. I've seen them for Jeeps, just not for my Avalanche.

EJ

 

[scipper77]

Re: Drilled/Slotted Rotors...

Cross drilled/slotted rotors also have a greater tendency to warp. When you come to a hard stop like say when a 3000 lb boat is behind you a lot of heat builds up. If you sit at a light with the brakes clamped down the area under the break pad stays hot while the rest of the rotor cools down. This happens with all rotors but the likelihood of warping increases as you drill and slot away material. Pretty much all rotors will warp to some degree with age. The next time you are driving try making a hard stop from high speed. I bet even if your breaks feel smooth normally you will feel a shimmy under heavy breaking.

It's always a good idea to drift forward at a light instead of holding the pedal firm.

 

[dvandsm64]

Re: Drilled/Slotted Rotors...

i was going to put cross drilled and slotted rotors on my mustang gt. a mechanic told me it would be overkill unless i was driving on the autobahn. so i bought regular rotors, but the slotted are cool looking.

 

[Unleadedaddict]

Re: Drilled/Slotted Rotors...

The best thing to do for improved stopping power is to add 4-6 piston calipers. I am Wilwood dealer they have a ton of options. Cross drilled and slotted rotors help dissipate heat quickly. Nascar runs carbon fiber brakes thats why they are not slotted. here is a link for a truck kit. http://www.wilwood.com/BrakeKits/BrakeKitListFront.aspx?make=Chevrolet&model=Silverado%201500%20Picku&year=2003&frttype=Disc&reartype=Drum&modoption=6%20Lug%20-%204%20x%202%20w/%20Drum%20Rear

 

[mscher]

Re: Drilled/Slotted Rotors...

A set of good replacement pads is like $40.

Even if pulling a trailer, etc., if you are burning through pads and you are not overloaded (which you should not be), or driving in the mountains all of the time, slowing down sooner, usually will take care of any brake wear problem.

If you have money to burn, they look pretty cool.

 

[MTboatguy]

Re: Drilled/Slotted Rotors...

I have them on my Jeep and have been very happy with them, but in the many conversations we have had on this chat system, there are quite a few that don't like them.

You might try doing a search, this has been discussed at great length on here.