Question about bleeding brakes

[sixpack_sid]

I just put a disc brake conversion kit on my 68 Charger. I tried bleeding the brakes today, and I couldn't get them bled. I  had my wife inside the car pumping the brake pedal. I didn't get any air pressure or fluid out of the rear cylinders. Since I don't have the engine in yet, and it's just the booster and there's no hose going from the back of the carb to the booster, you can hear the air pressure at the booster. Can it be bled that way? Or is there another way to do it? I went with Dot 5 fluid since I just painted the car in late Sept. Thanks for the replies!

[Back N Black]

Did you bench bleed the master cylinder? Try opening the bleeder screws at the wheel cylinder and let it gravity bleed.

[sixpack_sid]

Did you bench bleed the master cylinder? Try opening the bleeder screws at the wheel cylinder and let it gravity bleed.

I did bench bleed the mc. I should mention that this is a whole new system all new lines, new mc, new booster, new prop valve, front disc brake kit w/calipers, the works. I only tried to bleed the rear pass wheel. At the rear, the t block it was leaking so I had to tighten the line there, but saw no fluid beyond that. I opened the bleeder screw all the way, had my wife pump the brakes and saw no fluid.
Would the fact that there is no line from the carb to the booster cause the problem of not being able to bleed the system?

[Back N Black]

Did you bench bleed the master cylinder? Try opening the bleeder screws at the wheel cylinder and let it gravity bleed.

Would the fact that there is no line from the carb to the booster cause the problem of not being able to bleed the system?

No line to the booster is not an issue, i bleed mine with no engine in the car. I had the same problem no fluid out back, so i just open the bleeders and came back a couple hours later and they were dripping, my buddy pumped and bleed no problem.

[terrible one]

Just making sure . . . are you closing the bleeder when she lets the pedal back up? If not it will suck air back in on the return and you won't get anywhere.

[sixpack_sid]

Did you bench bleed the master cylinder? Try opening the bleeder screws at the wheel cylinder and let it gravity bleed.

Would the fact that there is no line from the carb to the booster cause the problem of not being able to bleed the system?

No line to the booster is not an issue, i bleed mine with no engine in the car. I had the same problem no fluid out back, so i just open the bleeders and came back a couple hours later and they were dripping, my buddy pumped and bleed no problem.

Makes sense. I'll try that. Thanks!

[sixpack_sid]

Just making sure . . . are you closing the bleeder when she lets the pedal back up? If not it will suck air back in on the return and you won't get anywhere.

Yes, thanks for asking.

[sixpack_sid]

Ok, so I tried to gravity feed the brakes today and the lines were dry as a bone. So I called "The Right Stuff" tech line (where I bought the kit) and they told me that the prop valve I have, the PV75, they don't even make anymore. I just bought this kit last year. Anyway, he told me that there is a slider in the prop valve that will close if there is a leak in the line, so the other brakes can still work. So he told  me to open up the bleeders on the front brakes and pump the brake pedal hard, then close the bleeders and open the back bleeders. Then gravity feed the lines and it should work. Well, I tried it and let it drip for about an hour. When I tried to bleed the rear wheel again, the fluid stopped leaking completely. WTF!! Anybody know where I can get a decent prop valve that doesn't have a slider in it? I want it to be old school and am having lots of problems! The Right Stuff said they could send me another, but I have to send mine back 1st. Yeah, right! And let my $20 per qt. Dot 5 brake fluid all drain out while I wait for a new one! LOL! I'm not sure I can use my old distributor block since I changed to front disc and besides the lines aren't the same sizes.
Help!

[resq302]

Do what I did till I got mine back when I had an issue.  Get the rubber vacuum caps and put them over the lines.  That should keep the fluid in the lines till you get a chance to replace the block.  As long as you dont press on the brake pedal, the caps should remain in place and prevent you from dripping the fluid out.

[sixpack_sid]

I called The Right Stuff and they are sending me another prop valve. We'll see if that does the trick!

[sixpack_sid]

I got the new prop valve today from The Right Stuff-by the way, good customer service-they sent me a new one right away even though it's been almost a year since I ordered the kit. I hooked it up and bled the brakes no problem. Whew! Now I can move on to the dash!
Thanks for the replies!

[1969chargerrtse]

Awesome.  Would suck if you put it in and that wasn't the issue.