about how many feet dose it take a rear disc equiped rx7 to stop and how many feet can i cut off that with cross drilled rotors ,hawk hp pads ,and stainless brake lines all the way around?

 

It matters how many bricks you put in the wall.

 

i do not reccomend hawk blue pads for street use. they squeal like a bitch. if you have an owners manual, check in there, it will tell you. if not, someone will post it, if not, i'll have it posted by tomorrow morning.

 

ok first off. cross-drilled rotors are a waste of money. cross-drilling offers next to no added breaking performance. if anything slotted rotors will help a little. cross-drilling just looks cool. I don't think that I've ever seen a race car with drilled rotors. the venting channel in the center of the rotor really should be enough to cool the rotors off.

 

Start watching the Speed Channel...almost ALL of the serious race cars that are on the heavy side are cross-drilled, not slotted or ball-milled...

 

i didn't say hawk blues i said hawk hp's they are different and dam near all the race cars ive seen have cross drilled and i still don't have any answears

 

Stainless braided lines help a lot, in the fact that you can feel much more feedback through the pedal. And the pedal will be much firmer than before. I honestly believe the lines have cut at least 10 feet off of my 60-0 time although i have no scientific proof....

 

My brake pedal isn't very firm, but I don't think that SS lines would make any difference as I find it far too easy to lock the tires already. Maybe I need wider tires.

 

i do realize they are different. i was just giving you a suggestion. some people do not know the difference between the pads. they think they can put "race" pads on their cars and have them streetable. they are wrong. they will squeal and it is difficult to heat them to a good op. temp.

 

i know but i thank you on your support

 

Car and Driver magazine tested the 84 GSL-SE braking distance from 70-0 @ 199 feet.
SS brakelines will only offer firmer pedal feel and not significantly reduce that distance like having the Hawk pads and most importantly a GOOD set of tires.. by how many feet exactly I cant say.

 

i read the 81 gs did 60-0 in 155ft

 

no way....not stock

 

Not to sound like an idiot, but wouldn't the amount of time required to stop depend on speed?

 

in 60-0 standard magizine test

 

What's the magazine, then? I remember a 60-0 of 210 ft...

 

i believe car and driver but it could have been road and track

 

Hey

I just put SS brake lines on my SE..........What a huge difference.........I can stop on a dime........I just feal I have better control and feal of the road....

Great upgrade for an SE..........

 

Which SS lines did you get? I'm looking to get myself some, but I haven't done my reSEARCH yet. BTW, did you install them yourself? Are they easy to put in?

Thanks

 

It just begs the question....how could you remember something as specific as that before you were even interested in RX-7s after all these years...they wouldn't do a hard test on a car even 4 years old, so the C&D/R&T test article you are referring to is at least 16 years old! Why would you remember an obscure fact like that for so long? If you didn't, then that means you've seen it recently. Link to it. Scan and paste it here. Otherwise, 155 ft? No way....not stock....

 

I dunno, 155ft is believable, its a light car and if your brakes are in good shape they grab like crazy. I think someone should test it.

 

The rear tires lock up on a GSL or otherwise read disc braked 1st gen. Too much rear brake. I had an adjustable brake bias dial installed and dialed out some rear brake and now my car stops better.

I did numerous weekends of track days with the rear locking up; once that brake bias dial was installed it braked a lot better. The PRO7 and ITA guys all do this too.

Made by Wilwood. **** style
http://www.wilwood.com/products/valves/valves.asp

Brad

 

This is exactly why I'm trying to get him to cite a source. It is not believable, but will start to make people think it is just because he threw it out there. It is highly unbelievable, in fact. Look at this figure for the BMW-built Mini Cooper S which weighs 2671 lbs, but needs 170+ ft to go from 60 to 0 mph....and that's with superior German brakes...I'll say it again...NO WAY a stock '81 GS or even a better-braked GSL-SE did a 155 ft time...

 

mar3 - no way a stock GSL-SE did it in 155, huh? That's really interesting. According to my 85 owners manual, the non-se cars can stop from 60mph in 160ft. The GSL-SE can do it 150ft.

According to Motor Trend (June 1984 edition), the GSL-SE can stop from 60mph in 144ft. Do you want me to post a picture of it? I have it sitting right here in my lap, and I can scan it and post it in just a few moments if you would like...

Next time, please know what you're talking about before you spout off misinformation.

Also, in reference to your comment about the use of slotted rotors: usually, the only racers that use them are the short-heat runners (less than 50 miles). They also change them after EVERY track event, as they are usually unsuable after that amount of time. Just a little FYI.

Thanks,
Rob

 

Owners manual is hopeful info...I don't do Motor Trend, so please post it...

One thing I've noticed that will make an apples to apples comparison harder is the changing of the benchmark...

It's no longer from 60 mph, but standardized as 70 mph to zero...