Big Cam No Vacuum
72 Duster with big cam, no/little vacuum... When I first hit the brakes they react like they should. If I hit the pedal again there is little Boost assist. To stop I have to stand on the brakes. (fronts are disc, back are drums). Since the brakes act like they should on the first stop I am going to assume that everything is as it should be except for the vacuum. I ordered a Dorman 904-214 vacuum motor and plan on hooking it up with my current vacuum line. First, has anyone reading this done this? In what order did you plum the vacuum line from the vacuum motor into the current vacuum line. Before or after? Where did you locate the new pump, frame? (I would just as well not mount it on the inside fender well. Not any room because of other add ons. No room on firewall because of NOS hook-ups and other components). And where did you hook up the power? I've got a Flex-a-Lite control box with a hot wire. I have a fuse block (painless wiring harness) on the inside fire wall and also the ignition switch on the column. (mine is unique in that the ignition switch only energizes the starter for starting. I have to flip a switch under the dash for the car to actually start when the ignition switch is turned. To shut the car down, I flip the switch to the off position and then turn off the ignition switch). It's obvious that there is a hot wire on the switch under the dash (?) but i'm afraid that if I pull power from that switch it may be too much load on the switch. There is probably a hot wire in the ignition switch wiring since the radio plays with just the ignition switch turned on. And there is the Fuse block which I am leaning to. I could also fuse the wire there. A friend suggested that I also add a switch to shut the vacuum pump off so I could manually shut it down if for any reason I needed to. (I believe the pump has an internal on and off switch regulated by vacuum pressure?). I was just going to add another canister (home made from PVC) but I have that problem of having enough room except for the inside. fender well).
72 Duster with big cam, no/little vacuum... When I first hit the brakes they react like they should. If I hit the pedal again there is little Boost assist. To stop I have to stand on the brakes. (fronts are disc, back are drums). Since the brakes act like they should on the first stop I am going to assume that everything is as it should be except for the vacuum. I ordered a Dorman 904-214 vacuum motor and plan on hooking it up with my current vacuum line. First, has anyone reading this done this? In what order did you plum the vacuum line from the vacuum motor into the current vacuum line. Before or after? Where did you locate the new pump, frame? (I would just as well not mount it on the inside fender well. Not any room because of other add ons. No room on firewall because of NOS hook-ups and other components). And where did you hook up the power? I've got a Flex-a-Lite control box with a hot wire. I have a fuse block (painless wiring harness) on the inside fire wall and also the ignition switch on the column. (mine is unique in that the ignition switch only energizes the starter for starting. I have to flip a switch under the dash for the car to actually start when the ignition switch is turned. To shut the car down, I flip the switch to the off position and then turn off the ignition switch). It's obvious that there is a hot wire on the switch under the dash (?) but i'm afraid that if I pull power from that switch it may be too much load on the switch. There is probably a hot wire in the ignition switch wiring since the radio plays with just the ignition switch turned on. And there is the Fuse block which I am leaning to. I could also fuse the wire there. A friend suggested that I also add a switch to shut the vacuum pump off so I could manually shut it down if for any reason I needed to. (I believe the pump has an internal on and off switch regulated by vacuum pressure?). I was just going to add another canister (home made from PVC) but I have that problem of having enough room except for the inside. fender well).
