Topic: sunnen mandrel - eKartingNews

sunnen mandrel

This topic contains 7 replies, has 3 voices, and was last updated by Rodney Ebersole 1 year, 6 months ago.

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July 13, 2017 at 8:20 am #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
July 13, 2017 at 12:24 pm #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
July 14, 2017 at 2:26 pm #83583

Jim Silverheels
Participant

Bill, I think the Y72-2625PF mandrel is the one. Thanks
- July 19, 2017 at 3:26 pm #83787
  
  William Martin
  Participant
  
  A mere $401 in my 1997 catalog… ugh. Glad you found it!
July 19, 2017 at 5:07 pm #83791

Jim Silverheels
Participant

Billy, can you lend me some money to buy it? Must be 700 bucks now, yikes!
- July 20, 2017 at 11:44 am #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.
July 20, 2017 at 4:20 pm #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
July 21, 2017 at 4:44 am #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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