Quote:
Originally Posted by jeffahart
For sure not correct. I did have trouble when I moved to front disc on this truck with the newer master and prop.I ran the drum/drum with yanked RPV for a few months. I finally got around to installing the correct master setup. I was dissatisfied, and it left me scratching my head for weeks. It drug its hind end and I hated the feel of the pedal. I went back to the original drum/drum distribution block and master with the yanked RPV. The brakes worked great... go figure. I only have so much brake bleeding in me. I got sick of dickering with the brakes. And I refused to put an adjustable on the rear, call me stubborn. When I upgraded the booster I decided to give the Hydro a whirl. It seemed like a cheap easy upgrade... it was. I am delighted.
If you read any of my posts, you will always see me advocating for a working baseline. Once you start mixing and matching components you can really start chasing our tail.
I think you should get a booster with a disc/drum accumulator. As long as you're at the dismantler get the master with the booster, get them attached, no mistakes. You will get the correct rod from the booster to the master. Further, if you get a junkyard booster only, make sure it has the rod and if you ever take it to a parts store for core make sure you pull the rod first. I usually, take stuff back for core after I get the reman installed and working. Maybe someone here can advise on the behavior of the disc/disc accumulator on your setup. My thought is that these are newer components and are plenty available. You can get real close or even slam dunk on your first pass. And have brakes that put your face in the windshield... that's what you want. 
j |
The Duramax disc/disc booster isn't what I really wanted, but I didn't know at the time that it could be an issue for being disc/disc. What I really want is a hydro with master cylinder and proportioning valve off a first gen Safari or Astro (85-94), but they only had 2nd gens (95-05) which have a severe downward angle where they attach to the firewall that may not work.
What hydroboost unit are you running? And are you saying to install a RPV right away or not? I'm fine with trying the stock drum/drum M/C, getting a new disc/drum prop valve and seeing how the brakes behave.