Previous Thread
Next Thread
Print Thread
Page 7 of 7 1 2 3 4 5 6 7
Re: So, how much braking do you really need? [Re: astjp2] #870676
12/25/11 11:06 AM
12/25/11 11:06 AM
Joined: Jan 2003
Posts: 3,575
The Netherlands
BigBlockMopar Offline
master
BigBlockMopar  Offline
master

Joined: Jan 2003
Posts: 3,575
The Netherlands
Thanks for pulling this topic up from out of the sewer again... We need good winter-topics like this to sink our gums in every year...
It's like A Christmas Story, only with a better braking leglamp!

Re: So, how much braking do you really need? [Re: BigBlockMopar] #870677
12/26/11 02:04 PM
12/26/11 02:04 PM
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
astjp2 Offline
master
astjp2  Offline
master

Joined: Jan 2011
Posts: 4,785
Utah and Alaska
Well the 12.44 mustang rotors wont work for sure, gonna try the Crown vic ones today. Tim

Re: So, how much braking do you really need? [Re: astjp2] #870678
12/26/11 06:15 PM
12/26/11 06:15 PM
Joined: Jul 2006
Posts: 619
nj
J
JAMESDART Offline
mopar
JAMESDART  Offline
mopar
J

Joined: Jul 2006
Posts: 619
nj
i use tyhe 11.75 slider setup on the front of my duster and explorer rear discs. it works pretty damn good with 245 45 17s. i like it not bad for a bunch of factory junk. im curious how much better it could be.

Re: So, how much braking do you really need? [Re: JAMESDART] #870679
12/26/11 07:22 PM
12/26/11 07:22 PM
Joined: Jan 2007
Posts: 7,664
IN
A
ahy Offline
master
ahy  Offline
master
A

Joined: Jan 2007
Posts: 7,664
IN
The 11 3/4 discs are a really good setup and an A isn't too heavy. The main benefit of bigger discs over your dialed in factory setup would be in repeated braking. If you were running a road course at 10 10's, you would likley overheat the brakes... for more normal driving, not much benefit except weight.

Re: So, how much braking do you really need? [Re: ahy] #870680
12/26/11 10:15 PM
12/26/11 10:15 PM
Joined: Dec 2004
Posts: 733
Northern Virginia
Moparmaniacc Offline
super stock
Moparmaniacc  Offline
super stock

Joined: Dec 2004
Posts: 733
Northern Virginia
Instead of messing up this thread, can someone refer me to a good sticky on the easiest e-body disc upgrade

Thx

Re: So, how much braking do you really need? [Re: Moparmaniacc] #870681
12/26/11 10:27 PM
12/26/11 10:27 PM
Joined: Jan 2007
Posts: 7,664
IN
A
ahy Offline
master
ahy  Offline
master
A

Joined: Jan 2007
Posts: 7,664
IN
The MA "stop on a dime" articles cover upgrade using later 70's factory style parts.

http://www.moparaction.com/Tech/archive.html

Dr Diff, Master Power brakes and others have complete packaged kits as well.

Re: So, how much braking do you really need? [Re: ahy] #870682
12/27/11 09:43 AM
12/27/11 09:43 AM
Joined: Aug 2003
Posts: 2,463
Answering the call of the wild
T
ThermoQuad Offline
top fuel
ThermoQuad  Offline
top fuel
T

Joined: Aug 2003
Posts: 2,463
Answering the call of the wild
A drum brake car with the proper brake lining material will stop very well, repeatedly. Key words "proper lining material" which is not available at the autoparts store. Velvetouch and/or carbon metallic lining material should be used on all 4 corners. Velvetouch is hard to find theses days but it's out there.

A disc brake equipped car with the proper brake material will stop very well, repeatedly. Key words "proper lining material" which is not available at the autoparts store. Velvetouch and/or carbon metallic lining material should be used on all 4 corners. Velvetouch is hard to find theses days but it's out there.

Unless you want to put 17 inch wheels on your old cars there are mechanical limitations to what fits.

I have been running hot laps for the last 20+ years on the road course with mopar disc brakes on 15 & 16 inch wheels. I have not crashed [yet] from overheating the brakes while running some very hot laps.

The newest track ride is a big fat heavy 1970 Charger R/T. Top speed is limited 125mph on the straightaways because you need hp to push weight. It has the large rotors on the front with wilwood calipers, special compound wilwood pads, braided steel lines and high temp dot 4 fluid. On the rear is Dr Diff's set up for 15-16 inch wheels. 16x8 wheels. There is air ducted to the front brakes. There are no braking issues with the car.

There were no braking issues with my old but very wicked pos 70 'Cuda either that was set up in a similar fashion except the 'Cuda had 11 inch rear drums and ran much faster [130 mph]than the Charger. Sessions are 50 minutes, track distance is 3.4 miles. 15-20 laps depending how fast you are.
I think the brakes get tested.

If you feel the need to cut 5 seconds off your lap times on a 45 year old car larger brakes and more stiffening to the car would be required. The laps times are already very acceptable.

So there you have it, real world testing and results. The big fat Charger returns to Watkins Glen for more fun and adventure June 25-26, 2012.


6986367-glen1.jpg (79 downloads)
Re: So, how much braking do you really need? [Re: ThermoQuad] #870683
12/27/11 01:09 PM
12/27/11 01:09 PM
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
astjp2 Offline
master
astjp2  Offline
master

Joined: Jan 2011
Posts: 4,785
Utah and Alaska
I just mocked up a 12.44" rotor and caliper on a 15" wheel. Steel wheel didn't work but an aluminum one did.

6986564-DSCN0114.JPG (147 downloads)
Re: So, how much braking do you really need? [Re: Mike H] #870684
01/02/12 02:06 AM
01/02/12 02:06 AM
Joined: Jan 2005
Posts: 4,862
the frozen wastes...
Pale_Roader Offline
Swears too much
Pale_Roader  Offline
Swears too much

Joined: Jan 2005
Posts: 4,862
the frozen wastes...
Quote:

I can't recall having any difficulty bringing my 69 340 Dart (manual drum brakes) down from 110+mph, many times. So what's the deal with the massive disk brake setups so popular today? Ten inch, 12", 14" rotors, 4 pad, 6 pad, what, 12 pad? I've never even ridden in a mopar that can handle as well as my wife's 90 Camry, or even our Suburban with my wife, kids and the dog in it. So I assume nobody's driving LeMans or Nurburgring. Where the heck are you guys driving that you need so much braking? Down a mineshaft?




I dont know what it is about my particular style ov driving, but when i 'drive', i drive very fast, and dont tend to slow in the corners. I've never had anything more than stock, factory 11" discs/11" or 10" drums on my cars, which are usually at the lightest possible end ov the scale for what they are, which helps. On some i've had 16" or 17" rims and the best HP high speed rated tires available (though i always buy them used, so they are older than new), and on others i've had 15" goodl ol' BFG's. I just dont seem to go through brakes like other people do. A LOT ov this comes down to driving style... Three different 'drivers' (ie: not people who just drive cars, or commute) will require three different levels ov braking.

On my current road race Challenger project, brakes are going to be a big priority. After i get it running, and a new suspension front to back, i'm getting 4 13" discs. No more compromise. I've been daily driving a 96 Mustang GT for years now, with 275/295/35/18 BFG G-Force KDW2's and stock brakes... and i'll tell you that car has made me appreciate good brakes... Because it DOESN'T HAVE ANY.

Between having to drive this terribly brake-challenged Mustang for years, and then driving a rented E-class Mercedes (supercharged) with GLORIOUS 14" discs all 'round... I'm sold on killer brakes. With that Mercedes i could just sail into corners at speed and not care one bit. No matter how fast the car in front was, come the corner he's on the brakes and i'm still on the throttle. I could never do that in the GT... or my old Mopars... I want that advantage. To say nothing ov safety.

That Mustang has also been in at least one accident that better brakes would have avoided. Even my stock braked crap tire Charger stops quicker.

Page 7 of 7 1 2 3 4 5 6 7






Powered by UBB.threads™ PHP Forum Software 7.7.1