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manual to power brakes
im thinking of swapping my 70 duster out to power brakes. ive already done the 11.75 front rotor swap with slider calipers, and 11X3 rear drums. it stops pretty well, just requires a bunch of pedal pressure. my knees arent getting any better, and its just not that fun to drive the manuals.
couple of questions. 1. how much vaccum do i need to properly run the system? 2. what year model boosters are the best? 3. will my current master cyl work? 4. do i need to locate a differnt brake pedal assembly for power due to stroke differences? 5. will my 2 year ols stainless lines be reusable? 6. any parts i cant think of needed? thanks for any help you can gove me. michael __________________ |
#2
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there are some newer high performance master cylinders that may make your braking easier. Hate to see you add 50+ pounds to the car, and rob engine power to boot. May be worth looking into.
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#3
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The 360 may not develope enough vacuum to operate a brake booster. I suggest a master cylinder from a 75 dart with manual disc brakes. It worked for me.
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#4
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A simple vacuum canister can help significantly. I have a fairly radical solid roller cam that makes 10 inches vacuum at idle in gear, yet a simple $100 vacuum canister from Summit made my power brakes work fine.
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#5
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ok, what is the minimum vacuum needed for proper operation?
also, a different master was mentioned. what one? |
#6
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Quote:
different pedal pressure for manual brakes. I'd call one of the techs at a brake company. These are things to consider before going through the expense of adding power brakes, which rob power, can interfer with headers, etc, and add 50+ pounds to an engine. |
#7
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My power wagon hardly has any vacuum at all, and it has great power assist.
I would bolt the master on and then see, might be all you need |
#8
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I have 4.5 inches of vaccuum at idle in gear at 700 rpm, and have no issues with my power brakes.
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#9
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One problem with power brakes and low vacuum, is that you may only be good for one hard brake, then if you have to brake hard again immediately, you don't have brakes. That happened to me once!
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#10
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going coastal
Quote:
I've never had ANY such issues with mine! I live just north of you (on the big island)and most driving is coastal roads. (get the picture) |
#11
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Quote:
Before I put on the vacuum canister, I was at a stop light, and took off pretty fast. All of a sudden I was on a turn, and hit the brakes pretty hard, I then let up, but had to hit them again in about 2 seconds, and there was almost no brakes there! Apparently what vacuum I had initally was used up in the first braking episode. Keep in mind when I punched it off the line, the vacuum goes to about zero, and was also pretty low while idling. So, it could be shakey if one has to pump the brakes to slow down (like if you were trying to stop on ice or snow), and has a low vacuum motor and power brakes. |
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