jor
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Registered: 12-2003
Location: Tucson, Arizona
Posts: 101
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Brake Booster & PCV
67 F-100, 352, Power Brakes, 77 front end
The previous owner of my 67 put a 77 front end on it and I think he swapped out the master cylinder and brake booster at the same time. Anyhow, I've always had very hard brakes on this truck so I decided to do something about it this year. I ended up putting in a new master cylinder and brake booster. The brakes were better but only marginally so. Anyhow, the PCV valve and the brake booster share the same vacuum source. i.e. the intake manifold behind the carb. Well, I unhooked the PCV valve hose and plugged it and what do you know, excellent brakes!!! What's the deal here? Do I need to find another vacuum source for the PCV valve. Maybe I'm using the wrong valve? Thanks.
jor
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6/20/2004, 6:16 pm
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6772FordFseries
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Location: West Point, NE
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Re: Brake Booster & PCV
The PCV valve connection should be at the base of the carburetor, the power brake booster connection should be directly off the rear of the intake manifold....they should not be connected to the same port, as you've found out.
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Keith
FORDification Forum Administrator
1967 Ford F-100 2WD shortbox
admin@fordification.com
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6/20/2004, 7:04 pm
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jor
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Re: Brake Booster & PCV
I know that's the stock setup (vacuum from carb to PCV) but I have a replacement carb which does not have a vacuum source. Now what?
jor
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6/21/2004, 8:20 am
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