Can you machine drilled and slotted rotors?

Last Update: May 30, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

Asked by: Jayce Murray
Score: 4.4/5 (51 votes)

Can You Resurface Drilled and Slotted Rotors? You can cut or machine a drilled and slotted rotor. Just set your brake lathe to its slowest setting to avoid any chatter. Whenever replacing your pads, you'll want to replace or cut your rotors, so the new pads can bed-in properly.

Are drilled and slotted rotors worth it?

They perform well, although not necessarily better than other styles of brake rotors. ... Drilled & slotted brake rotors are also are fine for general use in street vehicles. Cons: Drilled & slotted rotors are not recommended for performance racing since the drilling makes them vulnerable to cracking.

Can slotted discs be machined?

If done properly, and with care, slotted and drilled rotors can be machined. Not all warped, worn or damaged rotors can be brought back from the dead, but more often than not, a proper machining job can breathe new life to your rotors and should be considered a viable alternative to replacement rotors in some cases.

Are drilled and slotted rotors bad for daily driving?

The low down is yes, Slotted rotors are bad for daily driving. The slots act as razors to shave off layers of the pads each time so you have a fresh layer of the pad touching the metal of the rotor as it spins, thus creating less heat, thus producing less friction, thus creating better braking.

Can you machine 2 piece rotors?

Yes, you can have them resurfaced as long as there is enough material left.

Datsun 311 Rotor Machining - Altima Drilled and Slotted

41 related questions found

What are two-piece rotors?

Two-piece rotors offer some significant advantages, though, such as reduced weight as well as better heat dissipation, partly from the aluminum hat acting as a heat sink. Some two-piece rotors also offer increased airflow through the rotor because of the more open design where the hat meets the rotor face.

Why are two rotors so expensive?

A 2 piece rotor has that operation, plus you need to make the carrier core, and then you need to attach the two. So more expensive to make, and therefore more expensive to buy. 2 piece rotors have several benefits. Lighter weight is not among them - they're a bit heavier.

Are drilled rotors a gimmick?

Cross Drilled and or Slotted rotors are definitely not necessary but they aren't a gimmick either. Like the user above me said, they WILL make a difference in brake fade, and cars that hotlap tracks all day long can definitely benefit from them.

Are dimpled rotors better than drilled?

The dimpled rotor is an evolution of the cross-drilled rotor designed for track and sport cars. Because SUV's and trucks exert a much higher load and stress on the brake rotors, the dimpled rotor is recommended due to the higher stress handling capacity. Outgassing is important as it allows the brake pad to "breathe".

What is the difference between cross drilled and slotted rotors?

Slotted brake rotors have machined grooves or 'slots' on the surface of the disc rotor. Unlike cross drilled rotors, these grooves do not pass all the way through, which help to reduce temperatures for better performance.

When should I replace slotted and drilled rotors?

When Should They Be Replaced?
  • After pressing the brake pedal, the driver feels a vibration in the steering wheel and/or the brake pedal. Cause: Pad Deposits. ...
  • The brakes produce very loud noises when braking. Cause: Corrosion, or worn out components. ...
  • The brake rotor has developed surface cracks. Cause: Excessive heat.

Does O Reilly's turn rotors?

O'Reilly Auto Parts offers rotor turning services — also known as rotor resurfacing — at many of its locations. ... O'Reilly stores do, however, sell replacement rotors, brake drums, brake pads, and other parts needed to maintain and repair your brakes yourself .

How long do slotted rotors last?

On average, you can expect to replace your slotted and drilled rotors between 25,000 to 35,000 miles.

Why are drilled and slotted rotors better?

The design of drilled and slotted rotors offer drivers the advantages of both designs with minimal side effects. The drilled holes give you better cooling for the heat generated by heavy braking, while the slots work to sweep away gas and dust which come through braking.

What brand of brake rotor is best?

Top 8 Best Replacement Brake Rotors and Why You Need Them
  • Editor's Pick: ACDelco Professional Brake Rotor. ...
  • Bosch QuietCast Rotor. ...
  • ACDelco Advantage Non-Coated Rotor. ...
  • DuraGo Premium Electrophoretic Brake Rotor. ...
  • DuraGo Vented Disc Brake Rotor. ...
  • Centric Parts Premium Brake Rotor. ...
  • Wagner Premium E-Coated Brake Rotor.

Do slotted rotors make noise?

When braking, cross-drilled and slotted rotors tend to make noise. A small popping noise is normal, as this is the sound of the pad going over the slots/holes. Unless you have full race brakes, a squealing sound is not normal.

What is the difference between coated and uncoated brake rotors?

ACDelco uses a specific coating technology called COOL SHIELD™. The entire rotor including its interior has a baked on, robotic applied coating for long lasting rust protection, compared to an uncoated rotor. Edges and vanes also stay cleaner longer, for optimal cooling. Vanes play a key role in safety and performance.

Do drilled rotors run cooler?

Yes, drilled rotors tend to run a little cooler than straight faced rotors, but there are two caveats to that: The face of the average drilled rotor can have a reduced surface area of 10%-12%, which means overall less area for the pad to grip onto, and less friction applied in total, meaning not as much heat generated.

Do 2 piece rotors last longer?

This allows you to run the rotor through countless heat cycles without having to worry about warping or cracking. Cost Savings: Although the initial cost of 2-piece rotors is more expensive, these rotors last considerably longer then a 1-piece grey iron rotor.

When should brake rotors be replaced?

Most industry professionals will recommend replacing your rotors somewhere between 30-70K miles in any case.

What do rotors mean?

The Rotor is the brake disk that attaches to the wheel of the car. In a disc brake system, the brake pad is pressed against the rotor with a set of calipers. The friction it causes enables the car to slow down and stop. If you let your brake pads wear out without replacing them, you risk damaging the rotor.

Are Floating Rotors worth it?

The number one reason why you would want a floating rotor is you are looking for the most stopping power! When you grab the brake lever it creates a hydraulic force that squeezes the brake pads onto the brake rotor. A floating rotor has the ability to conform to the brake pads giving maximum rotor to pad contact.

What are floating disc rotors?

Floating type is a disc brake which has a piston on only one side, and is also called the sliding type disc brake. Floating type is a disc brake which has a piston on only one side, and is also called the sliding type disc brake.

Are Floating Rotors better MTB?

Floating rotors are claimed to offer better heat dissipation and improved warping resistance, but the real benefit is they are always lighter than non-floating designs.