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Snap-On Offset Head Nut Wrench

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  • Snap-On Offset Head Nut Wrench

    What's the difference between the S-8663-A wrench and the S-8663-B?

    Thanks!
    Mike in Orygun

  • #2
    Nothing. The S-8663 was made 1950 - 53 the S-8663-A was made from 1955 - 65 and the S-8663-B were made in 1967.

    Comment


    • #3
      If anyone would like to buy one of these Snap-On offset head wrenches, send me a PM
      Alaskan A's
      Antique Auto Mushers of Alaska
      Model A Ford Club of America
      Model A Restorers Club
      Antique Automobile Club of America
      Mullins Owners Club

      Comment


      • BILL WILLIAMSON
        BILL WILLIAMSON commented
        Editing a comment
        FORTUNATELY, my OLD wrench I used on Volvo B-18 & B-20s for years, FITS PERFECTLY!
        GREAT old engines, except they had Timing Gear problems, similar to Model As. MOST failures were on LONG, HOT runs!
        Volvo Dad

    • #4
      Thanks! Still re-torquing after replacing the head gasket. I've been removing the dissy each time, which works and is ok, but it'd be nice not to have to.

      Comment


      • #5
        I use a crows foot with a 6” extension and a torque wrench. Never saw the need for the wrench pictured.

        Comment


        • #6
          image000000.jpg We used to use the crow's foot method, then we hit on this:
          Take a spare socket, cut it down with a cutoff wheel, and weld it to a 3" extension, Voila! Perfect tool to torque all the head nuts, and even makes it easy to get at the 3 by the firewall.
          Never remove another distributer

          Comment


          • pAAt
            pAAt commented
            Editing a comment
            Great engineering and an easy make. Thanks

        • #7
          Just as a matter of precision, when using the crows foot or the created offset the torque at the nut is not the same as what is set on the wrench.
          Last edited by Mike V. Florida; 11-18-2017, 01:13 AM. Reason: spelling and grammer

          Comment


          • Denis4x4
            Denis4x4 commented
            Editing a comment
            I would think that the difference would be very slight. Then again, if you used either method on all of the head nuts it wouldn't make any difference. Curious as to how much the difference is.

        • #8
          Agree. The difference in torque from the wrench reading should be negligible. Use the crow's foot on all the nuts for an equal value on all 14 nuts

          Comment


          • #9
            I try to have an inventive mind until it comes to a snap-on wrench that I don't have...

            Comment


            • #10
              Originally posted by Mike V. Florida View Post
              Just as a matter of precision, when using the crows foot or the created offset the torque at the nut is not the same as what is set on the wrench.
              If the crows foot is at 90° to the torque wrench the torque on the nut will be correct.

              Comment


              • DaWizard
                DaWizard commented
                Editing a comment
                Hey katy, WELCOME to the VFF!!!

              • tbirdtbird
                tbirdtbird commented
                Editing a comment
                very true

              • Timothy Kelly
                Timothy Kelly commented
                Editing a comment
                I respectfully disagree with "katy's" conclusion. Mike V. Florida's comment is spot on.

                With the Snap-On offset head nut wrench mentioned in the first post, the square drive of the torque wrench is directly in line with the head nut being torqued.

                With a crows foot the square drive of the torque wrench is set off to the side of the head nut even though the crows foot is at 90 degrees to the torque wrench. Since the torque drive is not directly over the head nut, the crows foot in effect adds length to the torque wrench changing the torque value due to the added leverage.

            • #11
              Update: First, Thanks to all who responded to my original question. I've since snagged one on Ebay. Works great! Sure, there are other ways to tighten head nuts, and it's not a tool a guy would use every day, but then again, ya just can't have too many tools, right? For anybody that's interested, there are a couple up for bids on Ebay. I'm not associated with either of these sellers:

              https://www.ebay.com/sch/i.html?_fro...-8663&_sacat=0

              Comment


              • davew
                davew commented
                Editing a comment
                Thanks

              • CarlG
                CarlG commented
                Editing a comment
                I always thought that owning a Model A is just an excuse to buy more tools.

            • #12
              I have not looked at this thread since it started.
              In fact, what Katy said in post #10 is true.
              There is only an added lever effect if the tool is used at 180° to the nut.

              Having said all that, since we are only talking about 1/2" distance, the extra torque applied at 180° is essentially meaningless, and the error comes in at 2.29 ft-lbs for an intended torque value of
              55 ft-lbs
              Last edited by tbirdtbird; 01-10-2018, 11:16 PM.

              Comment


              • #13
                See post #3

                I still have several of these wrenches. If you want to have one of your very own, send me a PM
                Alaskan A's
                Antique Auto Mushers of Alaska
                Model A Ford Club of America
                Model A Restorers Club
                Antique Automobile Club of America
                Mullins Owners Club

                Comment


                • Mitch
                  Mitch commented
                  Editing a comment
                  Will you autograph them?

                • CarlG
                  CarlG commented
                  Editing a comment
                  If that's what tightens your nuts, by all means.
                  Last edited by CarlG; 01-11-2018, 12:10 PM.

              • #14
                This is my collection of "under the distributor head nut" torque tools. DSCN4542.JPG 1-Bonney 2617, 2-MAC S 8S, 3-Snapon S8663B, 4-KR Wilson 6050-N, 5-Proto 6435, 6-Snapon S8677
                All work just fine.

                Comment


                • #15
                  Geez guys, tight is tight. Set one with a torque wrench, then see how tight it is with a box wrench and then do it to the one by the dist. It ain't rocket science here. What did they do during the depression and after(shadetree mechanics)??
                  Paul in wet CT

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