What PSI to use to bleed brakes ?

[bilabonic]

Hi All

I have managed to source some ATE super blue brake fluid and an Eezibleed system which uses tyre pressure to replace the fluid.

http://www.pedrosgarage.com/Site%203/Bleed...6%20Clutch.html

On Pedro's he has the pressure at 20 lb/sqr inch, this means nothing to me as i need PSI and can not see how he has a torque unit when he needs pressure ???

Would 15 psi be ok ? Or does anyone know the correct value even though i doubt its critical.

Cheers

[blue2000s]

psi=pounds per square inch

[Loren]

Porsche says 1.5 bar

1.5 bar = 21.7556607 pounds per square inch

[bilabonic]

Doh moment, got a bit confused as replacimg my plugs etc

[03BoxsterS]

bilabonic, I use the Motive Power Bleeder and they tell you not to exceed 20 psi. The reason is that the brake fluid reservoir is not positively connected; it just rests on top and has gaskets preventing the fluid from coming out. I know this because when I bled my brakes, I had the reservoir pressured up with about 20 psi, and I accidentally hit the reservoir, and fluid came squirting out the bottom, bypassing the gaskets. I thought I had cracked the reservoir, but I had only caused the gaskets to temporarily lose their seal, letting a little fluid come out. I cleaned it up (oh yes brake fluid definitely eats paint, thank goodness it was on the inside of the boot) with alcohol and it was all good.

03Boxster S