DSE brake booster question. No pedal
 

So I have got this car all together and last thing I am struggling with is having any kind of brake pedal.

69 Camaro
Ls1
227-231-113 cam
DSE brake booster
Disc brakes all around.

We have put all new brake lines around on the car.
A proportioning valve for the rear brakes.

We have bench bled, gravity bled, pressure bled and manually bled all the corneres 11 times now.
We have NO air in the lines.

Our issue is when we adjust the rod out. I had braking power, actually to much braking power. The car in neutral would not move. Had one hell of a drag on it.

We backed off the rod a few turns. And right back to pedal to the floor.
When the car is off I have a mildly firm pedal. As soon as I turn her over goes to the floor.

We have used every hole on the pedal. Adjusted the rod from shortest to fully extended. Still nothing.
No leaks in the lines.

Anybody have any clues. Any suggestions.
Please help.

What master cylinder are you using and what brakes?

First, the rod between the pedal and booster. Remove the pin, hold pedal up against the pedal stop or brake light switch, adjust rod until pin slides in with no preload. Leave that alone.

Is the pushrod there between the master and booster? Nothing really holds it in on those boosters, it could have fallen out.

Like above, what master are you using?

Im using the Detroit Speed Master and booster all in one.

there is a push rod but its not adjustable

WIlwood 2 piston set up in the front from CCP
Right stuff disc converstion for the back.

:mad:

Yeah, the rod between the booster and master is not adjustable, just wanted to be sure it was there. My first statement was in regards to the rod from the pedal to booster, that is how to adjust it.

Right stuff rear discs? Is that the setup using the mid 80s seville caliper? Sometimes they work, but most times they don't. I have never had any luck with them at all.

I have heard of too thin a pad being shipped with those kits and that causing problems.

Is your ebrake hooked up and adjusted properly?

If you pinch off the rear hose(s) do you have a pedal then?

I'm seriously not getting any pressure.
Car off... I have a harder pedal feel but goes to the floor.
Car on... The pedal is soft and goes right to the floor.
Take it out for a test drive at ...
5-10 mph it will slow down.
10< the brakes have no affect in the speed.

Plug the master cylinder ( both holes) pedal is rock hard with car on and off.
Plug just the front brakes I have a hard pedal but if I take it out for a ride the bitch doesn't stop.

The rod between the master and booster isn't adjustable.
The rod between the booster and pedal have been adjust 10 times on each of the three holes.

I am so stumped and discouraged.

Yes. It is a devil brakes. They seem to be fine as ebrakes. Lol

I'm gonna try to work around the car and see if I can narrow down the pfoblem

If you plugged both ports and the pedal is hard then the problem is not the master or booster, it's somewhere beyond that. You tried diving it with just the fronts plugged and it didn't stop which doesn't surprise me since the fronts do 70% of the work stopping the car. What happens if you plug just the rears? Just in case you don't know, the ports are reversed on that master, the front port should be plumbed to the rear brakes and the rear port should be to the fronts.
With all that being said, the first thing I would do is look at the rubber boot on the booster where it comes through the firewall, it needs to be centered in the hole, if it's not you need to either slot the firewall mounting bracket holes more or open up the hole in the firewall. If it's not centered the booster piston gets pinched between the rubber boot and the firewall hole and will result in either a lazy return of the pedal or the brakes are locked like you said you had before you started adjusting the rod. Once you are certain that the boot is centered then adjust the rod like Donnie suggested.