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WTB - 1/4W obstruction box wrench for center head bolt

Discussion in 'Wanted' started by elefantrider, May 29, 2019.

  1. elefantrider

    elefantrider VIP MEMBER

    Joined:
    Apr 6, 2013
    Want something that is proven to fit the rear head bolt when engine is in the bike. What do you have?
     
  2. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
  3. elefantrider

    elefantrider VIP MEMBER

    Joined:
    Apr 6, 2013
    Prefer one like this, instead of the no name brand above sold by eurojamb. Anyone else have anything interesting?
     

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    Last edited: May 29, 2019
  4. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Last edited by a moderator: Jun 17, 2019
  5. texasSlick

    texasSlick VIP MEMBER

    Joined:
    Jan 2, 2013
    I took a 4 inch long ring spanner, one end fit the head bolt nut (5/16 W?), the other end was one size larger. I had a 1/2 inch (US) nut welded in the larger end, to which I could apply my torque wrench using a 1/2" socket.

    Then, if one applies the torque wrench 90 degrees to the ring spanner, no correction factor is required.

    Slick
     
  6. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    That is how I do it with the CNW SS head kit, using a torque adapter.
     
  7. elefantrider

    elefantrider VIP MEMBER

    Joined:
    Apr 6, 2013
    My preference is the turned down, thin ring Elora in my picture, sold by Norton years ago.
    Unsure how many like that are still out there. I am somewhat of a tool junkie, and generally prefer matte finish tools to chrome ones.
    Does that King Dick ring end sold by Andover actually fit the center nut? It looks rather thick wall.
     
  8. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Well, that changes things a bit! Have fun!

    ask @Madnorton
     
  9. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Turns out that King Dick I linked above is the same wrench I have but mine is 5/16 x 1/4

    IMG_20190530_214936.jpg

    Broken link removed
     
    Last edited by a moderator: Jun 17, 2019
  10. Bernhard

    Bernhard

    Joined:
    Apr 20, 2011
    I just improvised using a ring spanner I had which I carefully ground the outer metal down to fit.
     
    dynodave likes this.
  11. Danno

    Danno

    Joined:
    Feb 7, 2010
    Looks just like my heirloom starter wrench.
     
    Last edited by a moderator: Jun 17, 2019
  12. elefantrider

    elefantrider VIP MEMBER

    Joined:
    Apr 6, 2013

    Does it fit the center nut? The ring looks too thick to clear the head.
     
    Last edited by a moderator: Jun 17, 2019
  13. gortnipper

    gortnipper VIP MEMBER

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    Nov 11, 2013
    Yeah, mine did.
     
  14. 850commando

    850commando

    Joined:
    Nov 1, 2014
    [​IMG] will get you into both top and bottom nuts
     
    gortnipper likes this.
  15. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Just did that yesterday putting my head back on. Works a treat.
     
  16. dynodave

    dynodave

    Joined:
    May 28, 2003
    Fairly good hardware set for the head, considering the same was used on 1949 NHT 12 series 500cc engine in the M7. Now, same hardware all the way up to 75 828cc!!
    The 1/4W Gordon Tools/Sheffield England wrench to be used all the way back to 49 will have to be thinned down a little bit more (.043"/.050"wall) than as used on commandos.
    With 22 nortons, I've tried out a few wrenches and heads...lol
    I'd say box wrench thinning 101 class counts as tool design engineering!
    Added:
    Snap-on avg .095"-.100" wall
    Elora 205 avg .110" wall - good wrench too
     
    Last edited: Jun 4, 2019
  17. 850commando

    850commando

    Joined:
    Nov 1, 2014
    [​IMG]
     
  18. xbacksideslider

    xbacksideslider VIP MEMBER

    Joined:
    Aug 19, 2010
    I have a King Dick spanner too but it has two nuts at the larger end and I apply it's torque straight on to the ring, no correction factor required.;)
     

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