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Old Yesterday, 12:02 PM   #1
JohnIL
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Join Date: Aug 2022
Location: Central Illinois
Posts: 142
Re: Disc Brake and Power Brake Conversion - Part 6

Quote:
Originally Posted by SCOTI View Post
Manual & power brakes use different leverage on most vehicles. When I swapped to vacuum/power assisted brakes from Hydraboost on my Squarebody dually, it required a different ratio.

When I swapped to disc brakes on my drum brake trucks, I kept them manual so it was just as you did (remove the slack @ the pedal).
I actually had that same thought. If I can't figure out how to firm up the pedal, I would almost rather go back to manual brakes. The pedal actually feels pretty good without the engine running (no vacuum assist). I've worked with factory power disc/drum setups on lots of other cars and I've never felt a brake pedal this spongy before. I've also never done a manual to power conversion before, so this all new territory for me.

I did some extracurricular reading last night. My booster and master were part of a CPP kit. According to CPP's online documentation, they should already be "mated" to each other. But, there's always a chance that the booster actuator rod needs to be adjusted. That would explain the soft pedal. I have a booster rod measuring tool ordered from the Amazonians. When it arrives next week, I'll verify that the booster and master are playing nice with each other. Then, theoretically, I should be able to adjust the brake pedal rod, more or less like a manual setup. Take out the slack and adjust to 1/8" -1/4" headspace.

Keep the advice coming. I'll take all the help I can get!

Thanks.
John
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1965 C10 Long Bed Fleetside
SBC 350 and Saginaw 4 Speed

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