Adjustable brake proportioning valve (Page 1/1)
darter576 MAY 27, 08:48 PM
OK I got a 82 Dodge Rampage ( picture a dodge omni with a pickup bed), trucklet originally had a brake proportioning valve in the rear that sensed the load in the bed and adjusted brake bias accordingly. The original valve was removed and an adjustable proportional valve put in just off the master cylinder.
I rebuilt the rear brakes including wheel cylinders and lines now I'm having trouble bleeding them.
Any suggestions?
I'm thinking maybe vacuum bleeding as I don't have a helper.
thesameguy MAY 28, 06:55 PM
Man, I love Rampages. Always wanted one but have never found one in anything approaching good shape.

Have you considered a Motive Pressure Bleeder? For one man operation, they cannot be beat.
darter576 MAY 28, 09:20 PM
I actually have two, both 82's. Tried vacuum bleeding this afternoon, didn't seem to work. I was going to open up the adjustment but the plastic knob broke off and the position of the valve does not allow for pliers.
I get the feeling I may have to pull the master cylinder in order to get to the valve and replace it.
darter576 MAY 28, 09:22 PM
I actually have two, both 82's. Tried vacuum bleeding this afternoon, didn't seem to work. I was going to open up the adjustment but the plastic knob broke off and the position of the valve does not allow for pliers.
I get the feeling I may have to pull the master cylinder in order to get to the valve and replace it.
thesameguy MAY 29, 06:28 PM
I've always wanted to do a 2.2 turbo swap into a Rampage. Years ago I found a nice Scamp, but honestly I can't see the point of owning one of these cars if it doesn't say Rampage on it.

Sounds like you have a few cars - I'd spend the $50 on a Motive pressure bleeder. The amount of time it saves on brake & clutch bleeds is unreal. I just had to rebuild the front calipers on my XR4Ti and a full brake flush took maybe 15 minutes since I could easily get to the bleeders.

If the Rampage has an old-style rectangular master cylinder like other '80s domestics (eg, Fiero), buy a couple big clamps or clamp/spreaders to hold the cap on. Makes a world of difference, and a bleed or flush is much more effective when you're pushing fluid out instead of sucking.



Just pump up the canister to 8-10psi and crack open each bleeder in order. A small piece of clear hose on the bleeder to direct fluid into a gradated container lets you see when bubbles stop coming out and lets you measure how much fluid you've pumped. You also avoid "false bubbles" when they get sucked through the bleeder's threads, etc. I use a large syringe, same effect.

[This message has been edited by thesameguy (edited 05-29-2015).]

darter576 MAY 29, 07:33 PM
I did some research and the reviews lead me to believe it is a worthwhile purchase.
A Little gorilla epoxy took care of my broken adjustment knob and it looks like if I open the adjustment all the way I get fluid out of the rears, so it looks like I'm on the right track just gonna have to do a few laps.
Yeah. I got a couple of cars In addition to the two rampages I have two 84 Fieros (one of em an Indy) a 95 Lebaron convertible and an 11 Ram crew cab 4x4. In case you haven't figured it out, I'm not married and have no kids.