Are vacuum assisted brake bleeders needed on 911

[Ed scuba]

I was at WGI this past week and a Instructor trying my car thought my brake pedal was soft. I told him I had just bleed the brakes via speed bleeders. His comment was all 911 brakes need to be bleed with a master cylinder vaccuum type device in order for all air to be removed. Your thoughts?

[GH85Carrera]

I prefer to use a combination of BOTH methods. The vacuum works well but I feel better knowing the pressure from the MC is pushing the fluid out. I guess I am a belt & suspender type of guy.

[Bill Verburg]

You can do it either way, I use a m/c pressure bleeder at home, but don't carry it on the road.

vacuum bleed is a third way to do it, many don't like this method because air can bleed back into the caliper if the lines to the nipples aren't tight

[Dixie]

You do not need to do anything special to bleed the brakes on a 911. Pressure, vacuum, gravity, or pumping the pedal all work just fine.

May I ask what fluid and pads you are using, and if you have ducting to the front brakes?

[T77911S]

i use my wife. most of the time just gravity. i had a cap with a shreder valve and would put that on with about 2-3 psi to do it by myself.

[kidrock]

says here to be careful to _not_ depress the pedal to the floor while pumping the brakes. Hope this is not the case with your brakes.

BTW, I like Speed Bleeders. Very good and simple concept.