Front Rotors

[Whydah91]

Getting ready to replace the front rotors on the '91. Can anyone suggest a drilled {not necessarily drilled and slotted} brand that you've had good results with. Factory size, not updated later brakes.:thankyou:

 

[zblackbeast]

I would just stick with a preimum flat rotor and some good pads. I doubt you'll be in many situations where you'll hear them up that bad..


I personally would save for the 96 upgrade.. the stock brakes compared to the 96s are rubbish and not worth replacing imho..

 

[Whydah91]

Yeah Clay, I was thinking of that also. I've have no issues with the way the car stops the way I use it, but it's had 6 sets of front rotors and 2 sets of rears since new. I was looking for a little cooling effect with drilled rotors'
Mike

 

[sdpatt]

The holes were not for cooling, but for escape of gases generated by the pads. Modern pads do not really have this concern, so the holes are more for weight savings and appearance, but not in that order. The drilled holes actually reduce the friction and heat sink surface area of the rotor, resulting in higher brake rotor temperatures. The way to cool them is to provide greater cooling air flow, greater heat sink surface area, or both.

You can greatly increase the braking performance of even the 10.2" stock brakes by using a higher quality pad with higher friction coefficient and greater temperature range. Pads such as the Carbotech 1521 with great bite and are good up to 800F will provide a greater margin of safety on the street with even the stock rotors.

Carbotech Site: http://www.ctbrakes.com/pads.asp

For rotors, I recommend using economical disks that, after initial break-in to mate the surfaces, are bedded and heat cycled per the instructions in the FAQ/Bedding Procedure information in the Carbotech site above.

With brakes, you get what you pay for. I finally upgraded to the '96 configuration (with the generous help of a Forum member) after I started taking my '91 to the track. The stock rotors and calipers were seeing temperatures over 900F. The '96 components kept this below 600F for the same track, even though I was running faster laps with upgrades to R-compound tires and Carbotech XP10 pads. For street use, you can upgrade the pads for the results you are looking for.

 

[frosho]

Don't buy cross-drilled rotors. You'll end up replacing them even more often after they start to crack around the drill holes. You'll go through pads faster too.

You already said the brakes work fine (i.e. they don't fade), so there's no benefit to be had with drilled rotors. If you're looking for rotor longevity, you might want to look at a different type of pad than what you've been using.

Edit: What Scott^ said.

 

[Ishodu]

The cheapest disks and the best pads have always done well for me. Welcome back Scott

 

[jedhead]

I cryo treated my stock rotors and used Performance Friction Carbon Metallic pad with good results. The rotors survived two set of pads on my car and were next installed on my bro's SHO for another couple of pad changes. I would spend my money on getting the best pads on stock rotors.

Bob