overheated brake rotors

This is what happened the last time I went to the track. I knew something felt wrong but had to drive home anyway. When I got home this is what i saw.

Category:

Autos & Vehicles

Tags:

• over
• heated
• brakes
• honda
• civic
• delsol
• cross
• drilled
• sloted
• rotors
• napa
• Hawk
• HP
• pads
• racing
• hot
• cracked

[nagkandautot2006]

how many miles you put in your rotor before it was broken. What brand of rotor did you use.

[drivefast6969]

@nagkandautot2006 - these were from Napa. I got about 800 miles out of them. Mostly on the track.

[Sandeep9201]

Do the drilled rotor's with pads last longer than regualar rotor's with pads?

[drivefast6969]

@Sandeep9201 --- nope, they ware faster but perform better.

[Sandeep9201]

could you reservice drilled rotors??? HELP

[drivefast6969]

@Sandeep9201 ---- I wouldn't turn drilled rotors. as you can tell im hard on brakes so I'd just replace them.

[AtariFTW]

made in chi chi chi china!

[Bulgdoom]

Might wana look into carbon rotors

[exnol]

So how do you know when a rotor has broken.

[Autofanatic28]

I would only get slotted. drilled brakes not really ideal for track use as the hole in the rotor compromise the structure integrity.

[looncraz]

From the look of the wear pattern I'd guess that these were not bedded in before tracking them? The cracks are caused by the temperature difference AND the structure loss from the holes (showing that - yes they are cooling - and, yes, those holes to create weak points).

Personally, on a track vehicle, I think slotting without the holes is better as the temperature delta is spread over a larger area and the strength is hardly compromised at all... just a theory, though ;-)

[Me112233]

This is what happens when you drill holes in rotors. The cracks are all orignating at the holes, where expansion/contraction occurs and a higher rate than it does away from the hole. If you need better stopping power or brake fade is an issue, get bigger rotors (you can get aftermarket kits for most cars/trucks). The Viper did it that way. Very basic brakes -- no holes, no grooves, not even ABS, just really big.

[DaBluedude100]

I would suspect this was caused partially by not having bed them in properly... Ive been running similar rotors on my mustang and i run them hard on some downhill canyon blasts (20 mins worth with a LOT of hard breaking) and they are great even after 70k km on them...

[Sandeep9201]

@minilogoguy18 so what about car that come with drilled rotors?? over a long period of time they will crack too right??

[minilogoguy18]

@Sandeep9201 They can be turned, just have to set the lathe at the slowest setting. Drilled rotors are prone to cracking like that, I'd just get slotted.

[SuperDeluxe80]

@compaqeo

dont have to worry about heat unless you driving way to fast then breaking hard or at a race track.