1972 F-250 2wd to 4wd build

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    Just an FYI: I ordered the Vintage Air kit January 22nd and it hasn't even shipped yet (keeps getting pushed back, supposed to ship April 9th is the latest). Apparently they're short on "raw materials" (in dash louvers to be specific) due to COVID.

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      Originally posted by flecker View Post
      STOP IT man!!! You're making me feel all old and slow.

      As usual, super clean and amazing work!

      Edit: After market A/C, or did ya source the parts for factory air?
      I'm pretty sure we are both old and slow, but it's not a race, just have to finish.

      Being an Explorer, it came with factory A/C. I had it working before I blew it apart, but it needed a fan motor among other things.
      1972 F-250 2wd to 4wd conversion - 460/C6/205, D60/10.25

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        Originally posted by backchat View Post
        Off Topic: Why did you shield your wires into your Hyperspark Coil? I'm assuming you were running into some EMC issues, but what was displaying the interference?

        I am finishing up the wiring (one of these days) on my own Holley EFI install. Thanks. Beautiful work all 'round.

        I shielded only the high voltage output drive of the MSD box (coil primary input) to reduce EM emissions specifically for the EFI and digital gauges. I did it preemptively before I started the motor. The MSD box boosts voltage to coil to 500 V and switches it off/on every cylinder fire. The switching of high voltage creates a shitload of noise. The plug wires themselves are shielded. The goal was not to contaminate all of the power distribution circuits that are right between the MSD and coil, as that would inject noise everywhere in the system. So far I have not had any EMI issues.

        If the wire was short, shielding could be skipped.
        1972 F-250 2wd to 4wd conversion - 460/C6/205, D60/10.25

        Comment


          Originally posted by 72Pstroke View Post
          I may have a factory AC system (the under dash part). Let me know if you are interested.
          Thanks. I have a mostly complete system, I'll let you know if I need something. Shit is old....
          1972 F-250 2wd to 4wd conversion - 460/C6/205, D60/10.25

          Comment


            Originally posted by rattle_snake View Post

            I'm pretty sure we are both old and slow, but it's not a race, just have to finish.

            Being an Explorer, it came with factory A/C. I had it working before I blew it apart, but it needed a fan motor among other things.
            I'm revamping mine too... also had factory A/C. All the components are in good shape really, just need to replace the O-rings and whatnot to make it an R134a system. There will prolly be something else too, but I haven't gotten that far into it yet,

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              Originally posted by holdmypocket View Post
              Just an FYI: I ordered the Vintage Air kit January 22nd and it hasn't even shipped yet (keeps getting pushed back, supposed to ship April 9th is the latest). Apparently they're short on "raw materials" (in dash louvers to be specific) due to COVID.
              well hopefully they can get it to you before it get too hot. I'm not sure I buy the covid excuse...
              1972 F-250 2wd to 4wd conversion - 460/C6/205, D60/10.25

              Comment


                Originally posted by rattle_snake View Post

                I shielded only the high voltage output drive of the MSD box (coil primary input) to reduce EM emissions specifically for the EFI and digital gauges. I did it preemptively before I started the motor. The MSD box boosts voltage to coil to 500 V and switches it off/on every cylinder fire. The switching of high voltage creates a shitload of noise. The plug wires themselves are shielded. The goal was not to contaminate all of the power distribution circuits that are right between the MSD and coil, as that would inject noise everywhere in the system. So far I have not had any EMI issues.

                If the wire was short, shielding could be skipped.
                Makes sense, thank you for the detailed explanation. Did you ground your shields anywhere?

                Comment


                  Originally posted by backchat View Post

                  Makes sense, thank you for the detailed explanation. Did you ground your shields anywhere?
                  Yes, I choose to ground the braided shield on the coil end as it was physically easier. Could be either end in this case but shield must be grounded to be effective.
                  1972 F-250 2wd to 4wd conversion - 460/C6/205, D60/10.25

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