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Edelbrock/Carter Carb Vacuum Ports

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  • Edelbrock/Carter Carb Vacuum Ports

    Looking at the "New" AFB carbs I am assuming that the large center front port labeled for PCV and the one in the center rear, designated for power brake vacuum are the same type, i.e. they are interchangeable?

    Dan White
    64 R1 GT
    64 R2 GT

  • #2
    I just installed a 1403 on my '63 GT Hawk. Works great. I capped the fitting on the front of the carb, and screwed a hose nipple into the rear fitting for the PCV hose.

    Distributor vacuum line goes to the small nipple on the passenger side, and the other small one is capped.

    I attached my stock throttle linkage rod to the large hole in the throttle lever. Used my lathe to build a special stepped nut/bushing that fits the large hole with a 1/4-28 thread to match the rod end on the linkage rod. I haven't yet checked if I can get full opening on the secondaries with this setup, but if I don't, it would likely be due to carpet interference with the pedal. It IS nice to have as long a "throw" on the accelerator as is practical; if you attach the throttle linkage too close to the axis of the throttle shaft, you get a very drastic-acting accelerator.

    Gord Richmond, within Weasel range of the Alberta Badlands
    Gord Richmond, within Weasel range of the Alberta Badlands

    Comment


    • #3
      Thanks Gordon. I have had a new Carter AFB on for sometime and am just in the process of redoing the hoses and cleaning up the engine compartment and wanted to move the PCV to the rear port, which now it looks like I can.

      Dan White
      64 R1 GT
      64 R2 GT
      Dan White
      64 R1 GT
      64 R2 GT
      58 C Cab
      57 Broadmoor (Marvin)

      Comment


      • #4
        I installed a 1403 on my '64 Daytona. My hose set-up is similar to what Gordon describes. I used the rear port for the PCV valve, but I used a PCV valve that screws directly into the port, like the original AFB on my Avanti. This PCV valve is available at NAPA, Echlin #29267. Then I just ran hose to the port on the valley pan. Works well.

        For the throttle linkage, I drilled out the hole just behind and below the large hole, and used the original ball end of the linkage. Rather than mount the carb on a spacer, I cut off the bottom of the linkage to clear the manifold. I also removed the choke tube and plugged the holes, for clearance. I did this to keep the overall height low enough to use the original air cleaner housing (made a ring adapter to suit the Edelbrock diameter.

        Jim Bradley
        Jim Bradley
        Lake Monticello, VA
        '78 Avanti II
        sigpic

        Comment


        • #5
          What PCV valve works in the 289? Any workable numbers will be apperciated.

          Comment


          • #6
            curt - I've not seen the number 29267 that rerun mentions but if it works for him, it should work on your 289. If your carb doesn't have a threaded hole - you could always buy a hose nipple to screw onto the threaded end of the PCV valve and use it as an inline with some vacuum hose and clamps Just make sure you get the flow direction of the PCV valve oriented right.

            Miscreant at large.

            1957 Transtar 1/2ton
            1960 Larkvertible V8
            1958 Provincial wagon
            1953 Commander coupe
            1957 President 2-dr
            1955 President State
            1951 Champion Biz cpe
            1963 Daytona project FS
            No deceptive flags to prove I'm patriotic - no biblical BS to impress - just ME and Studebakers - as it should be.

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            • #7
              Rerun, the Avanti/R series engine PCV hooked up to the tube out of the oil pan I believe?



              Dan White
              64 R1 GT
              64 R2 GT
              Dan White
              64 R1 GT
              64 R2 GT
              58 C Cab
              57 Broadmoor (Marvin)

              Comment


              • #8
                Actually, IIRC, my R1 had two PCV valves. One was threaded into the base of the AFB, and was connected by a hose to a fitting on the valley pan. The second PCV valve was "stuffed" inside the lower end of the hose that ran from the right side of the air cleaner to the tube on the right side of the oil pan. As far as I know, this was the factory set-up. Can any other R1 owners confirm this?


                Jim Bradley
                Jim Bradley
                Lake Monticello, VA
                '78 Avanti II
                sigpic

                Comment


                • #9
                  Rerun, the oil pan breather tube has a large tube and also a small tube that splits off of it. On mine the larger tube has a hose that runs to the air cleaner, but no PCV in line. The previous owner capped off the smaller tube, but I believe that is where the line runs to the PCV on the back of the carb. I am correcting this on mine, but I am not sure since I cannot find an R series diagram of how these hoses run.

                  Maybe someone with a unmodified R1 could help.

                  Dan White
                  64 R1 GT
                  64 R2 GT
                  Dan White
                  64 R1 GT
                  64 R2 GT
                  58 C Cab
                  57 Broadmoor (Marvin)

                  Comment


                  • #10
                    Dan,

                    Now that you mention it, I recall the smaller PCV hose going to the fitting as you describe. The chrome valley pan on the R1 probably didn't have a fitting.

                    Jim Bradley
                    Jim Bradley
                    Lake Monticello, VA
                    '78 Avanti II
                    sigpic

                    Comment


                    • #11
                      Just an FYI, when selecting a carb port to use for the distributor vacuum advance, make sure you test the one you plan to use to make sure it operates the way you want. For example, I want to use a port that supplies full manifold vacuum at idle, not "ported" advance that comes on board once the throttle is opened.

                      ("Ported" advance became popular in the late 60's when emission controls were still in their infancy. This allowed retarded timing at idle, while allowing advanced timing when the throttle was opened.)

                      The carb I have is a Weber version of the 500 cfm AFB that I've been told is functionally identical to the Edelbrock. But, none of the available distributor vacuum ports (small ports, not the larger ones used for the PCV system) supplied full manifold vacuum at idle. They were all ported. I ended up using a "T" off the rear of the manifold (that also feeds the power brake booster when equipped).

                      Your method may vary.

                      MarkC

                      MarkC, 64 Y8
                      Working in Spokane, WA

                      Comment


                      • #12
                        Rerun please note that the NAPA number you provided for the PCV valve is incorrect 29267 is for a 6 cylinder '65/'66 Studebaker, not '64 V8. I went to get one and one look and I knew there was no way. I got one from John Myers at Myers Studebaker.

                        Dan White
                        64 R1 GT
                        64 R2 GT
                        Dan White
                        64 R1 GT
                        64 R2 GT
                        58 C Cab
                        57 Broadmoor (Marvin)

                        Comment


                        • #13
                          Dan,

                          That's interesting. When I got mine, the number 29267 was what they showed for a '63 Avanti. The 29267 has a 1/4 NPTM fitting on the exit end and a hose fitting on the inlet. It screws into the rear port of the Edelbrock. The PCV valve is on my carb now, and the box with the number is 29267. Didn't the one they had look like that?

                          Jim Bradley
                          Jim Bradley
                          Lake Monticello, VA
                          '78 Avanti II
                          sigpic

                          Comment


                          • #14
                            Nope it had no NPT, just a slide in hose connection and two tubes for vacuum. And I double checked the numbe and so did the NAPA guy? ODD??

                            Dan White
                            64 R1 GT
                            64 R2 GT
                            Dan White
                            64 R1 GT
                            64 R2 GT
                            58 C Cab
                            57 Broadmoor (Marvin)

                            Comment


                            • #15
                              Maybe someone put the wrong PCV valve in the box??? My NAPA doesn't stock this number. They ordered it in for me. So, I can't check another one there. Next time I'm in the store, I'll have them double check the application for the '63 R-1.

                              Jim Bradley
                              Jim Bradley
                              Lake Monticello, VA
                              '78 Avanti II
                              sigpic

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