![]() |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
![]() |
Krank |
![]()
Post
#21
|
Member ![]() ![]() Group: Members Posts: 140 Joined: 11-October 09 From: Winnipeg, MB Member No.: 10,922 Region Association: Canada ![]() |
I have been thinking about doing the beemer front disk brake upgrade. The only thing that bothers me is the loss of the parking /(cough, cough) emergency brake. I had an idea to look for a motorcycle front disk brake rotor mounted to the axleshaft with a cable operated brake assembly mounted to the tranny (I think there are three useable bolts on the RH side). Anyone play with this idea before?
|
![]() ![]() |
Eric_Shea |
![]()
Post
#22
|
PMB Performance ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 19,279 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains ![]() ![]() |
If your F100 brakes lock up your wheels... their job is done. How could they suck? You would only need a larger contact patch to get better braking once your wheels lock (read: fatter tires).
If you don't know how to drive down a mountain without getting brake fade (in a car that should "never" experience brake fade other than "heavy" track duty) you really shouldn't be driving a 914 down a mountain. (IMG:style_emoticons/default/biggrin.gif) Carrera calipers weigh 9+ frigg'n pounds EACH. I will guarantee you I would "Never" put those on one of my 914's. But wait, it gets better... 24mm Carrera vented rotors add an additional 4lbs. each. Welcome to nearly 20lbs. of additional UNSPRUNG weight to your 2000lb sports car. Guess what, the BMW caliper weighs almost the same! (IMG:style_emoticons/default/biggrin.gif) Upgrade away gang... I'm enjoying the show. (IMG:style_emoticons/default/thumb3d.gif) P.S. My thoughts on "Why"people think they need "upgrades": Most of us enjoy modern cars on a daily basis. The wife has an E500 wagon with excellent brakes. My Cayenne has the largest set of calipers ever thrown on a standard road going Porsche (I found a small pony living in my right front). All of these brake systems are well designed and power assisted. Put your big toe on the pedal and the big car stops... really fast It takes a few minutes to get use to the Cayenne after driving her car... now, imagine getting out of the Cayenne and going to a brake system from 1970, be it their top of the line 1970 914-6/GT model or a lowly (and lovely) 1970 914-4 (which has better brakes than anything in it's class!) Or... plop yourself into a 1970 Ford F-100. THINGS ARE GONNA FEEL DIFFERENT GANG. Does this mean our brakes suck? All things being equal... NO. Your 2000lb 914 can still stop much faster than the 2012 7000lb. Suburban behind you so... keep that in mind. Could they be better? Depends. To me, better means "stopping the car faster" and again, I'll go back to -- "If you can lock up your wheels with your current brakes, the answer is NO." Get bigger tires... you'll stop faster. Get better pads that allow you to modulate your pedal almost as well as an anti-lock devise... you'll stop faster. Learn "how" to brake/modulate and... you'll stop faster Given enough money, time and engineering know-how, I'm sure someone could install my Cayenne calipers on a 914. It still won't stop any faster if the tire is sliding along on the pavement. |
PRS914-6 |
![]()
Post
#23
|
Excellence Magazine Project 914 3.6 ![]() ![]() ![]() Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None ![]() ![]() |
To me, better means "stopping the car faster" and again, I'll go back to -- "If you can lock up your wheels with your current brakes, the answer is NO." Get bigger tires... you'll stop faster. Get better pads that allow you to modulate your pedal almost as well as an anti-lock devise... you'll stop faster. Learn "how" to brake/modulate and... you'll stop faster Given enough money, time and engineering know-how, I'm sure someone could install my Cayenne calipers on a 914. It still won't stop any faster if the tire is sliding along on the pavement. Eric hits the nail on the head! I would like to add some thoughts though. Pretty much any vehicle (even that F150) can lock up the brakes once. The question becomes how many times in a row can you stop. Picture that truck coming down the mountain..... A true "upgrade" really boils down to how many times you can stop repeatedly and that equates to heat absorbing and heat shedding capabilities since any brake system has a mechanical limit on both. The heat absorbing is mass and the heat shedding would be things like ventilated rotors. You need both to accomplish a true "upgrade" Most people go from the brakes of a modern day car and jump into a 914 and feel the 914 sucks. It has nothing to do with capacity or the need for an "upgrade". Next they throw in a 19mm MC, get a FIRMER peddle but is more difficult to stop (peddle pressure goes up). It has everything to do with assist for the average person and the desire to have the modern day car feel. It's not going to happen without the assist!!! Try some different pads to change the coefficient of friction So, when deciding if you need an upgrade ask yourself this.....Have my brakes EVER failed to easily stop the car? If the answer is no (all street guys), you are probably wasting your money to upgrade and an overhaul of a stock system will do wonders. The track guys will most certainly feel loss of brakes. It's that heat issue that requires more mass and heat shedding ability. An upgrade for them typically adds little to the modern car feel but adds the ability to do it's job longer and more frequent. Bottom line......If you think an "upgrade" is going to give the modern day car feel, you will be disappointing. If you want more "capacity" than upgrade away keeping in mind the need for both mass and heat shedding and the cost will be more weight....Are you sure you need it? Hopefully this will save many some cash..... |
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 16th June 2024 - 03:28 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |