What does an Original D409 rotor look like?? - NCRS Discussion Boards

What does an Original D409 rotor look like??

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Larry T.
    Expired
    • May 15, 2007
    • 404

    What does an Original D409 rotor look like??

    This is what they have on eBay as NOS right now. The one I have seen that I thought was right looked different. This looked pretty basic to me.

    Thoughts and a picture would be appreciated.
    Attached Files
  • William C.
    NCRS Past President
    • May 31, 1975
    • 6037

    #2
    Re: What does an Original D409 rotor look like??

    Attached is a pretty good picture of a used one "from the day" Taken from above to show the tip length. One of the pictures I took for the "Restorer" article. Email me directly if you want a high-res version, as I have to reduce the file size to use it on this board.
    Attached Files
    Bill Clupper #618

    Comment

    • Larry T.
      Expired
      • May 15, 2007
      • 404

      #3
      Re: What does an Original D409 rotor look like??

      Originally posted by William Clupper (618)
      Attached is a pretty good picture of a used one "from the day" Taken from above to show the tip length. One of the pictures I took for the "Restorer" article. Email me directly if you want a high-res version, as I have to reduce the file size to use it on this board.
      That looks like the one I have seen. So is the one I pictured a replacement? I have seen it in several places being sold as a D409.

      Comment

      • William C.
        NCRS Past President
        • May 31, 1975
        • 6037

        #4
        Re: What does an Original D409 rotor look like??

        I'm not certain that the picture from the auction site has enough detail to make a determination. The plastic was the same on the D-409 and the D409R, the change was on the tip length. The originals had a mold number on them next to the "delco remy" logo. If original, it should come in the hard metal top "delco remy" box. I think you can see from my picture pretty well how much the tip goes past the plastic underneath.
        Bill Clupper #618

        Comment

        • Chuck S.
          Expired
          • June 30, 1991
          • 184

          #5
          Re: What does an Original D409 rotor look like??

          I`ve been meaning to give you my kudos for the article on the D409 rotors. I`m sure that all of us who read it learned.
          GREAT JOB!!!

          Comment

          • William C.
            NCRS Past President
            • May 31, 1975
            • 6037

            #6
            Re: What does an Original D409 rotor look like??

            Thanks, just a little tidbit I learned the hard way about 35 years ago.
            Bill Clupper #618

            Comment

            • William C.
              NCRS Past President
              • May 31, 1975
              • 6037

              #7
              Re: What does an Original D409 rotor look like??

              Also might note that there is a "made in canada" version floating around that is supposed to be a D-409, but it doesn't meet the early "Goodguy" dimensions
              even though the tip lacks the "E" stamp. Some fellow in Chicago is selling them on the big auction site.
              Bill Clupper #618

              Comment

              • Larry T.
                Expired
                • May 15, 2007
                • 404

                #8
                Re: What does an Original D409 rotor look like??

                Originally posted by William Clupper (618)
                Also might note that there is a "made in canada" version floating around that is supposed to be a D-409, but it doesn't meet the early "Goodguy" dimensions
                even though the tip lacks the "E" stamp. Some fellow in Chicago is selling them on the big auction site.
                My membership had lapsed and I did not get the last several Restorers. I am of course now signed back up. I ordered the Restorer archives on CD but did not see your article. When was it written? Can you forward me a copy?

                Thanks,

                Larry

                Comment

                • Chuck S.
                  Expired
                  • June 30, 1991
                  • 184

                  #9
                  Re: What does an Original D409 rotor look like??

                  The person in Chicago selling the D409R rotors is our buddy from Chicago Corvette.

                  Comment

                  • William C.
                    NCRS Past President
                    • May 31, 1975
                    • 6037

                    #10
                    Re: What does an Original D409 rotor look like??

                    The files are too large for the DB, if you send me a PM with your email I'll send youa PDF copy of the article with pictures.
                    Bill Clupper #618

                    Comment

                    • Jim T.
                      Expired
                      • February 28, 1993
                      • 5351

                      #11
                      Re: What does an Original D409 rotor look like??

                      Not knowing about the difference in rotors and length of the electrical contact, after reading about rotors in the NCRS Driveline article I am going to inspect what rotors I have, in use and old removed ones to see what I have. Thanks

                      Comment

                      • William C.
                        NCRS Past President
                        • May 31, 1975
                        • 6037

                        #12
                        Re: What does an Original D409 rotor look like??

                        That one was referenced in the article, not equivalent to the "goodguy" versions.
                        Bill Clupper #618

                        Comment

                        • John D.
                          Extremely Frequent Poster
                          • November 30, 1979
                          • 5507

                          #13
                          Re: What does an Original D409 rotor look like??

                          You will find out that finding a NOS D409 in the old style box is not an easy task. Now as far as service replacements go the only ones (one) that I have seen that are identical to the old style come from Accel.
                          The ones that Standard made or make have an E and are the short tip.
                          Meanwhile Clupper old friend have you or any of your pals used a dyno to verify that there is in fact a noticeable difference between the short and long style "tip"??? Would be interesting if a drag racer noticed a difference. Maybe Dipstick (Is he still kickin?) and that cheater MD fru MD would try this test on their old clunkers they race with.
                          Enquiring minds wanna know. Being a pack rat I looked thru a ton of old D409's both DR and others. 99% are the short tip meaning they were made 1969 or later if I remember your nice article. But I did come up with a couple of used early D409's.
                          If you want to buy a new one gang check out Accel. Yes you might think Standard made or makes their rotor but if so why is the tip longer? JD

                          Comment

                          • William C.
                            NCRS Past President
                            • May 31, 1975
                            • 6037

                            #14
                            Re: What does an Original D409 rotor look like??

                            When I measured an accell, it did not have the longer tip. ???
                            Bill Clupper #618

                            Comment

                            • Gene M.
                              Extremely Frequent Poster
                              • March 31, 1985
                              • 4232

                              #15
                              Re: What does an Original D409 rotor look like??

                              I have been removing the rivet spring and metal strip on the rotors and repositioning it. I set it up on the distributor and turn it past a dial indicator to set to the "old" position. The difference is as much as .058" on the ones I "revised".

                              After finding and positioning the spring and metal I drill a new hole thru the spring metal and plastic rotor and install new rivet or small screw and nut. Afterwards I check it with the cap I plan to use. I have found that caps vary too. Some did touch the contacts in the cap but another cap had plenty of clearance, about .010" to .015". Must be a "china special". I guess one could make a new longer metal and save the drilling. I guess I'll try that next time, and save the drilling since it is difficult to keep and maintain the position with all three parts.

                              For flight judging I'm using Carlisle acquired caps for correctness, so I know they are USA made.

                              Comment

                              Working...
                              Searching...Please wait.
                              An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

                              Please push the back button and reload the previous window.'
                              An unexpected error was returned: 'Your submission could not be processed because the token has expired.

                              Please push the back button and reload the previous window.'
                              An internal error has occurred and the module cannot be displayed.
                              There are no results that meet this criteria.
                              Search Result for "|||"