Oversize Brakes
#1
03-02-2018
Join Date: Feb 2018
Location: Alameda, CA
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Oversize Brakes
I’ve got a 2011 Ranger 2wd with stock 15” rims...I slapped some 31’s on her and love it. I may or may not in the future run 33’s and I already notice the lack of braking power. So, is there a way that I can run a larger braking system at least up front to help her come to a stop and not warp rotors every 5 seconds?
#2
03-02-2018
Are your brakes fading because of heat, or are you just having to use more force on the pedal?
Slotted rotors can dissipate heat faster so less fading
Drilling a hole just over current brake pedal hole(for push rod) will increase leverage for less foot pressure.
A larger Master, bigger diameter piston, will also decrease pedal pressure required, if one is available.
But you have to be careful as brakes can become "touchy"
Current brake size is for the vehicles overall weight, including legal trailer weight, brakes are spec'ed for GCWR(Gross Combined Weight Rating), so truck fully loaded with passengers, gear and trailer
Larger/heavier tires do require more pedal pressure to slow them down, this is not a rotor size problem specifically, the pedal pressure required is what changes
Slotted rotors can dissipate heat faster so less fading
Drilling a hole just over current brake pedal hole(for push rod) will increase leverage for less foot pressure.
A larger Master, bigger diameter piston, will also decrease pedal pressure required, if one is available.
But you have to be careful as brakes can become "touchy"
Current brake size is for the vehicles overall weight, including legal trailer weight, brakes are spec'ed for GCWR(Gross Combined Weight Rating), so truck fully loaded with passengers, gear and trailer
Larger/heavier tires do require more pedal pressure to slow them down, this is not a rotor size problem specifically, the pedal pressure required is what changes
Last edited by RonD; 03-03-2018 at 12:32 PM.
#3
03-02-2018
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Location: Alameda, CA
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I only had one incident with brake fade but that’s because I was going down a crazy steep hill that was pretty long and windy...other Han gay my only concern is that I have to really crank on the pedal to get her to slow down. Maybe I’ll try the slotted rotors out and see how that does. Have you personally done the new hole on the brake pedal? How much would I have to go? Right now I have to push the brake about 1/2 way down for it to start slowing down at a reasonable pace.
#4
03-02-2018
Yes, I have modified brake pedal arms but opposite way when I added power brakes to cars, so less leverage, lower hole.
It isn't about the travel of the pedal, drilling the hole is about pedal pressure required
Read here on leverage and ratio: https://techtalk.mpbrakes.com/how-to...ng-pedal-ratio
Yes, automatics can wear brakes out fast going down hills, don't be afraid to down shift the transmission and use the engine as a brake, with fuel injection it actually increases MPG.
On fuel injected engines the computer will shut off fuel injectors if engine RPMs are above 1,500 and your foot is off the gas pedal, so 0 fuel use while going downhill as long as RPMs stay high, so downshift.
With carbs you shifted to Neutral and coasted, because of the Jets always feeding gasoline to the engine, you wanted low RPMs when going downhill, unless using engine as brake
Computer starts injectors at about 1,100 RPMs or if you touch the gas pedal
It isn't about the travel of the pedal, drilling the hole is about pedal pressure required
Read here on leverage and ratio: https://techtalk.mpbrakes.com/how-to...ng-pedal-ratio
Yes, automatics can wear brakes out fast going down hills, don't be afraid to down shift the transmission and use the engine as a brake, with fuel injection it actually increases MPG.
On fuel injected engines the computer will shut off fuel injectors if engine RPMs are above 1,500 and your foot is off the gas pedal, so 0 fuel use while going downhill as long as RPMs stay high, so downshift.
With carbs you shifted to Neutral and coasted, because of the Jets always feeding gasoline to the engine, you wanted low RPMs when going downhill, unless using engine as brake
Computer starts injectors at about 1,100 RPMs or if you touch the gas pedal
Last edited by RonD; 03-03-2018 at 12:31 PM.
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