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#71129 01/04/2007 6:22 AM | Joined: Jul 2006 Posts: 584 'Bolter | | 'Bolter Joined: Jul 2006 Posts: 584 | Does a 216 have adequate vacuum to run one of the mini boosters for power brakes? (all stock with a power booster). If yes, then where would be the best place to draw from? | | |
#71130 01/04/2007 7:02 AM | Joined: Jul 2005 Posts: 1,158 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 1,158 | You are probably going to want to use one of those double action fuel pumps and/or a vacuum canister of some kind. When you've got your foot on the throttle, the advance sucks up most of the available vacuum, leaving little for your booster.
(The lead foot effect is very evident when it rains and you try to use your stock wipers.)
I'm not sure where the best place to tap would be. You could probably get a T connector and either do it at the hose for the wipers or the metal line for the advance. Those are the only two places that I can think of that would be convenient to the booster once it's installed. | | |
#71131 01/04/2007 7:19 AM | Joined: Mar 2005 Posts: 1,029 Member | | Member Joined: Mar 2005 Posts: 1,029 | Most people don't have the throttle plate open when they are trying to stop, so the vacuum should be fine on decelleration. | | |
#71132 01/04/2007 6:56 PM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | For a vacuum source, use the port on the intake manifold. You can buy fittings for it at the hardware store.
Fred
52 3600
69 C-10
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#71133 01/04/2007 7:25 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Plenty of a vacuum for brakes from a 216, just make sure the master cylinder has a check valve in it.
The GMC 302 I have has a 1/2 pipe tee coming out of the vacuum port, and that was out of a dump truck with a hydrovac. The vacuum port has normal pipe threads on every intake manifold I've looked at.
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#71134 01/04/2007 8:11 PM | Joined: Jul 2006 Posts: 584 'Bolter | | 'Bolter Joined: Jul 2006 Posts: 584 | Thank you all. I would just get one of the little new booster/master cylinder combos and make it work. I presume those master cylinders have check valves. | | |
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