Let me be more clear.
Bench bleeding a MC using a vise to hold it and pushing on the piston
VS.
Mounting it to the booster and using the pedal to bleed the MC
My battle with my rear disc brakes is constant. The other day I looked into getting some new Willwood dual piston calipers for the back. It wasn't because they are dual piston, it was the only thing they had for a front C/K10 as an upgrade. I only wanted to try something different, something that maybe wasn't designed to retract the pistons when the pedal was let off.
This has been my problem, the pistons retract 1/8" or more each time the pedal is let off, thus causing a squishy pedal and poor braking. (cause each stroke means re-filling the caliper before any braking happens. Lots of stroke wasted re-filling instead of applying pressure)
The Willwood guy I happen to get on the phone told me they all do that and are suppose to do that. (I doubt he would stick to that story if he saw mine in person) He said I probably have air in the lines. I said probably not, since I've gone through 5 MCs and 3 shops. He said did you bench bleed the master....I said yes. He asked "in a vise or mounted, because if it's mounted it probably still has air in it since the booster doesn't push the piston as far in as if you were doing it by hand".
Never heard of this before.
Thoughts?
I've pretty much been driving on front D60 brakes this whole time. Even with a 2psi check valve installed by the 3rd shop, the rears don't work. I am trying a 10psi check valve today since the 2psi one recently started leaking. If the 10 is too much, I have another new 2 that will get thrown in. Or I can find a coupler and go without. I think if I just cap off the rears, my fronts will work better and pedal pressure would be better too LOL
As cool as the rear discs are, it wasn't worth it.
PS> don't reply if you're just going to say how happy you are with rear discs. There are other "brake trouble" threads I have that you can voice your opinions in.
Bench bleeding a MC using a vise to hold it and pushing on the piston
VS.
Mounting it to the booster and using the pedal to bleed the MC
My battle with my rear disc brakes is constant. The other day I looked into getting some new Willwood dual piston calipers for the back. It wasn't because they are dual piston, it was the only thing they had for a front C/K10 as an upgrade. I only wanted to try something different, something that maybe wasn't designed to retract the pistons when the pedal was let off.
This has been my problem, the pistons retract 1/8" or more each time the pedal is let off, thus causing a squishy pedal and poor braking. (cause each stroke means re-filling the caliper before any braking happens. Lots of stroke wasted re-filling instead of applying pressure)
The Willwood guy I happen to get on the phone told me they all do that and are suppose to do that. (I doubt he would stick to that story if he saw mine in person) He said I probably have air in the lines. I said probably not, since I've gone through 5 MCs and 3 shops. He said did you bench bleed the master....I said yes. He asked "in a vise or mounted, because if it's mounted it probably still has air in it since the booster doesn't push the piston as far in as if you were doing it by hand".
Never heard of this before.
Thoughts?
I've pretty much been driving on front D60 brakes this whole time. Even with a 2psi check valve installed by the 3rd shop, the rears don't work. I am trying a 10psi check valve today since the 2psi one recently started leaking. If the 10 is too much, I have another new 2 that will get thrown in. Or I can find a coupler and go without. I think if I just cap off the rears, my fronts will work better and pedal pressure would be better too LOL
As cool as the rear discs are, it wasn't worth it.
PS> don't reply if you're just going to say how happy you are with rear discs. There are other "brake trouble" threads I have that you can voice your opinions in.
I've also tried gravity bleeding the system too but for some reason (valves or not, front or rear) the flow is just too damn slow. ChrisPerry came over to help one day, all day (thanks chris) before BB last year and we tried to figure it out. He brought up gravity bleeding to me, never heard of it till then.
