CLASS RACER FORUM - View Single Post - soft brakes

nhramnl · 05-14-2010, 08:31 AM

I learned this from Pustelny and it works every time. Fill the master cylinder, open the bleeders at all four corners and just let the car sit for a few hours. Obviously, check the master cylinder regularly, to make sure it doesn't go dry. The system will gravity-bleed just fine. To make absolutely sure you're done (though it is not necessary), close all four bleeders and put one pump on the brake pedal at each corner. You should get solid fluid, with no sputtering.

One other thing. the basic rule of master cylinder bore size says that too large a bore will make the pedal go too deep and the brakes will tend to feel spongy and too small a bore will make the pedal too hard and require a ton of pedal pressure.

05-14-2010, 08:31 AM	#24
nhramnl Senior Member Join Date: Feb 2010 Posts: 507 Likes: 8 Liked 358 Times in 83 Posts	Re: soft brakes - why? I learned this from Pustelny and it works every time. Fill the master cylinder, open the bleeders at all four corners and just let the car sit for a few hours. Obviously, check the master cylinder regularly, to make sure it doesn't go dry. The system will gravity-bleed just fine. To make absolutely sure you're done (though it is not necessary), close all four bleeders and put one pump on the brake pedal at each corner. You should get solid fluid, with no sputtering. One other thing. the basic rule of master cylinder bore size says that too large a bore will make the pedal go too deep and the brakes will tend to feel spongy and too small a bore will make the pedal too hard and require a ton of pedal pressure.