Free 173 Best Homemade Tools eBook:  
Results 1 to 2 of 2

Thread: Norton exhaust flange nut wrench

  1. #1
    markfitz's Avatar
    Join Date
    Apr 2016
    Location
    Phoenix, AZ
    Posts
    19
    Thanks
    0
    Thanked 51 Times in 13 Posts

    markfitz's Tools

    Norton exhaust flange nut wrench

    Norton exhaust flange nut wrench-image.jpeg
    Norton exhaust flange nut wrench-image.jpeg

    To attach the exhaust pipes to the cylinder head, Norton used a finned flange nut that screwed into the cylinder head on the 750/850 Commando models. They looked great, but there were a couple of problems with this. First problem was that the threaded steel exhaust flanges had a tendency to become stuck in the aluminum heads. Removing them often involved a lot of torque and a lot of cursing. Second problem was finding something that would give a solid grip on the finned surface of the flanges that would let you apply the huge amount of torque needed to the loosen the flanges without bending, breaking, or cutting the fins. These parts typically go for more than $100 a pair, so hacking them up with a pipe wrench is not the preferred approach. Back in the Paleolithic Era, when I was turning wrenches for a living, I made this wrench to get the exhaust head pipes on/off the Commandos. It is 23 inches long and made out of 3/8" aluminum plate. 6061 was used to give the tool some added strength. To get the teeth right, I traced a pattern of the flange nut onto a small piece of poster board, then transferred it to the plate. A bandsaw was used to cut the plate. Final finish was done by filing by hand. This thing works pretty well, but there is still a lot of swearing and often the use of a rubber mallet in conjunction with the wrench.

  2. The Following User Says Thank You to markfitz For This Useful Post:

    PJs (09-27-2016)

  3. #2
    Content Editor DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,091
    Thanks
    433
    Thanked 931 Times in 857 Posts


    Thanks markfitz! We've added your Exhaust Flange Nut Wrench to our Motorcycle Engine category,
    as well as to your builder page: markfitz's Homemade Tools. Your receipt:





    Post your reply!
    Join 33,912 of us and get our 173 Must Read Homemade Tools eBook free.



    173 Must Read Homemade Tools

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •