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Right. With two MC's each MC is only filling 2 calipers instead of 4. It's one method of getting enough pressure with full manual brakes while also getting enough volume.Think about it like this: OEM's use big MC's to fill big, heavy, sturdy, safe calipers. Since you get less pressure with big MC's you need the boost to help with the pressure, so OEM's use power assist. Wilwood makes manual brakes. To get enough pressure with no boost you need small dia. MC's. But with small dia. you can't fill a very big caliper very easily. So you need more displacement without increasing MC bore and loosing pressure. There's only two ways to do that. You can increase stroke, but then the pedal needs to go through the firewall. Or you can use an additional master cylinder to double your overall volume.Another way to increase pressure is to increase your pedal ratio. But then your pedal travels further / through the firewall and is longer and needs to stick through your floorboard.Really, OEM's use two master cylinders also. They're just built into one bore with two pistons in the same bore. But we're complicating things now.
Right. With two MC's each MC is only filling 2 calipers instead of 4. It's one method of getting enough pressure with full manual brakes while also getting enough volume.
Think about it like this: OEM's use big MC's to fill big, heavy, sturdy, safe calipers. Since you get less pressure with big MC's you need the boost to help with the pressure, so OEM's use power assist. Wilwood makes manual brakes. To get enough pressure with no boost you need small dia. MC's. But with small dia. you can't fill a very big caliper very easily. So you need more displacement without increasing MC bore and loosing pressure. There's only two ways to do that. You can increase stroke, but then the pedal needs to go through the firewall. Or you can use an additional master cylinder to double your overall volume.
Another way to increase pressure is to increase your pedal ratio. But then your pedal travels further / through the firewall and is longer and needs to stick through your floorboard.
Really, OEM's use two master cylinders also. They're just built into one bore with two pistons in the same bore. But we're complicating things now.
