Home Forums Tech Talk sunnen mandrel

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    • #83547
      Jim Silverheels
      Participant

      What number Sunnen mandrel would you recommend to hone a Briggs World Formula engine plz? Not talking a flex hone.  thanks

    • #83554
      William Martin
      Participant

      What’s the bore size? Somewhere I think I have a Sunnen catalogue…years old, but still ok for this I think.

      -bill

    • #83583
      Jim Silverheels
      Participant

      Bill, I think the Y72-2625PF mandrel is the one. Thanks

      • #83787
        William Martin
        Participant

        A mere $401 in my 1997 catalog… ugh. Glad you found it!

         

    • #83791
      Jim Silverheels
      Participant

      Billy, can you lend me some money to buy it? Must be 700 bucks now, yikes!

      • #83811
        William Martin
        Participant

        You might want to check out the SN & JN series of portable hones, not quite so expensive. Not cheap either, but maybe half the cost. I bought an SN-75 model some 20 years ago, for 100cc cast iron cylinders, it works great. Just need a big 1/2 inch drill to turn it.

         

    • #83825
      Jim Silverheels
      Participant

      Billy, I have an expensive floor model Sunnen Hone with loads of smaller mandrels but nothing big enough to do Briggs World Formula. I ‘ve found those flex drill driven hones to be less accurate with bore roundness. These floor models get the bore perfect for me. just my take on it

    • #83832
      Rodney Ebersole
      Participant

      The portable hone isn’t a flex hone. It uses the same mandrel seen on the AN600 mandrel which is the mandrel I prefer to use when honing a briggs block or FV cylinder in my Sunnen machine.

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