Many with aggressive cams have a Vacuum canister so there is ample vacuum for the power brake booster to work properly. Low vacuum otherwise would render the brakes much harder to push as there is no "vacuum assist"Flat tire says he has 11.5 with a canister. Meaning if his car didn’t have the canister the vacuum I assume would be really low? Low vacuum affects the power brakes and vacuum advance to the distributor correct? Will low vacuum affect the power brakes a great deal? What are the symptoms with low vacuum to the power brakes? Would the brake pedal feel be spongy or hard? If I added a vacuum canister where would I get my feed vacuum from. Manifold? Front or rear of manifold or from the carburetor and where would it feed from off the carb.?
I am assuming Flat tire added a vacuum canister to help with the low vacuum. Is this thenormal thing to do to help with the brakes?
Why do people block off or disconnect the advance at the distributor? Is the timing advanced a lot at idle to compensate for the advance not working? Wouldn’t this make a car a little hard to start but yet be ok for driving. Please educate me on this.