IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: Shimy87 on September 07 2021, 10:04:50 AM
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Stupid question time.....the vacume booster is leaking so i need to replace it. I'm assuming one for non turbo 87 regal will be the one I should order?? Thanks!!
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The best is a larger diameter , think it’s 12” dual diaphragm brake booster , it’s a direct bolt on
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I think I have always used the 9" dual diaphragm booster. It gives more room to the valve cover. I have never had a problem but I guess the bigger one that you can stuff in there and still get the cover off, the more storage you will have.
Looks like the G Body booster from the v8 is dual 9" and the 80's B body is a dual 12". Learn something everyday
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I used the vacuum booster from a G-body Monte Carlo.
Stops well, but doesn't power brake very well.
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You’ve got to do the sy/ty shuffle. Put it in neutral, foot on the brake firm, rev up high enough that when you lift that you are pulling 30” of vacuum - the pedal should move more with the assist keep it held, and now drop on in gear and build boost
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You’ve got to do the sy/ty shuffle. Put it in neutral, foot on the brake firm, rev up high enough that when you lift that you are pulling 30” of vacuum - the pedal should move more with the assist keep it held, and now drop on in gear and build boost
I was under the impression that vacuum was highest at idle. Sounds like I may be wrong. I will try what you suggest.
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normally highest when coasting down. Look at the gauge when you take your foot off the gas and coast for a moment.