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Bled new Wilwood brakes but still spongy pedal

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bfit:

--- Quote from: jimandemma on April 08, 2018, 11:04:10 AM ---Changed the proportional valve, pressure bled the system with 2 1/2 liters of fluid in the bottle. Got a small amount of air from the front right, solid fluid from the rest of the caliper nipples. I have taken around a liter from each top nipple, all solid fluid, no bubbles. Pedal still to the floor. I give up!!

--- End quote ---

Mmm
You now have wilwood master yes?
What year booster Do you have?
Did you have booster out of the car ?

jimandemma:
Have a Wilwood Master Cylinder correct to the caliper setup
Not sure on the brake booster year but looks relatively newish
Booster hasn't been out out the car.
Might look at the push rod length as I think I made it a mm longer to piston contact when fitting the Master Cylinder to the booster. This could be closing off the compensating port.

bfit:
Did you fit the aluminium adapter in the master cyl. That is used in the later booster set ups.
 The booster push rod should only just touch the spool in the master cylinder , 
It’s a fell thing, only  just enough to keep the plunger/spool of the cir clip in the rear of the master cyl

What happens when you pump up the brakes to get a peddle , hold it down and start the engine.

jimandemma:
Did not fit the alloy adapter, push rod was long enough. It was pushing the piston 1 to 1.5mm when tightened to the booster.

Pumping brakes to get pedal with engine off goes half pedal and doesn't improve

Holding down and starting engine, goes straight to the floor.

I've taken the master off, will take accurate measurements with a digital vernier, adjust the push rod and bench bleed the master cylinder and try again Tuesday.

bfit:
If you can get an assistance measure the stroke you are getter at the booster.

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