Hold on. Wait just a minute. You come here to an RX-7 specific forum and throw out something about brakes, and now your saying you were just speaking in general. Hmm...Dont think so bud. Just face it, your wrong.

Oh, and you spell Brakes like this when you are referring to the ones on cars, not breaks. But ****, im only 19 so I probably dont know what Im talking about.

 

The Porterfeld R4S is an excellent street pad (the best I've found) and the chemistry is compatible with the Porterfeld R4 compound (which I've found to be a very good track pad), so you don't need to switch rotors between track and street. The Porterfeld is a carbon/kevlar chemistry, so the dust is also rim-friendly.

I've also used the Carbotech XP8 and XP10 on the track, and been very impressed. Prior to adding additional brake ducting for my (stock) brakes, I would get one track day per set of pads with these. After adding the ducting, I can get two track days per set. I believe Carbotech makes the NTech lapping day pads, so they would be the same compound as those.

The Carbotechs are not a compatible chemistry with the Porterfelds though. Using them on the same set of rotors will make it seem as if the rotors are warped.

 

How do the CarboTech XP8's and XP10 compare to the Porterfield R4 for the track ?

I do like having a "street" R4S that's compatible with a track pad. . .

:-) neil

 

Some good info here, thanks. Do you have a good source for the porterfields?

 

Nick at N-Tech has them custom made. He has never said who actually does the manufacturing but they are custom.

 

I've been using these recently and really like them but they are expensive. The dust cleans off much more easily than the Hawk products. No squealing at all in town and they do pretty well on the track though still not nearly what a true race pad will do. Anyone on street tires would probably be just fine though.

 

DamonB, do you switch between the R4S and R4 for track use ?

BTW: the Porterfield front pn# is AP331 and rear pn# is AP332 followed by the compound (e.g., R4; R4S; R11)

I've always just purchased them direct from Porterfield. http://www.porterfield-brakes.com

I had a pair that overheated for my application, Mercedes 500E (4000-lbs), at Buttonwillow and they replaced them.

:-) neil

 

You are just ignorant and incapable of comprehending what was said in this thread. Nor shall you speak anymore because you have yet to fill this thread with a shred of knowledge. I highly pertain you have none to offer. All we see is a kid trying to ramble BS to try and look intelligent in front of others. If you can not contribute like the rest of the group has stay out of the thread.

 

Thank you for the http://www.porterfield-brakes.com brake tip. I think I will try them on my drift car.

 

Wow, Im so ignorant and incapable of comprehending what has been said in this thread when I was the first one to tell you that drilled rotors will crack. Period. And remember how we are on an RX-7 forum, so thats what I was assuming you were talking about. Cause you know, it just doesnt make sense to try to argue about other brand cars here, right. Maybe you dont remember clicking on the link that says 3RD GEN SPECIFIC...

My whole point in posting in this thread was to say you cannot run drilled rotors for this car at the track. Unless you dont mind shelling out big money every HDPE for a new set. Dont say im ignorant, as I track my car regularly and have seen this particular topic occur in real life. Where as you can only speak in general terms referring to other high end car manufactures and even motorcycles. Got news for ya bud, motorcycles are a different breed. Do not ever try to tell me to post again. I have been here for ages longer than you, have helped out many a FD owner, and do my best to support the rotart community. All you have done is been disproved, and now your pouting like a bitch.

 

You're post rests my case.