head nut torque without special tool

Discussion in 'Technical Help' started by ducatimartyn, May 19, 2013.

  1. hi guys, am rebuilding my 2002 748
    how can i torque the cylinder head down without the Ducati tool?
    i have a torque wrench and im a dab hand with grinders etc so if theres something i can make myself im all ears,
    or if someone lives near lincoln and has 1 and would maybe lend me it........................
    thanks martyn
     
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  2. just do it with your own power.as in 'thats tight enough'.that will be ok.....
     
  3. when i have used tourqe shit in the past,i think to myself...........thats fook all.....but saying that ducati know better than me ;)
     
  4. yeah mine are 14mm, hav seen some crows foot but dont think theres enough clearance behind the nuts, they were still very "thick"
    might try torqueing a nut down at about spanner lentgh up my wrench and see how i get on doing it by feel, done jap 4s in the past without a torque wrench n not had a problem but these are finnicky italians lol
     
  5. If you can weld then make one from a ring spanner and a socket, like this. Just keep it at 90 degrees to the torque wrench;

    P1010844a.jpg
     
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  6. had something like this in mind but wasnt sure how it would affect torque figure, cheers for that, am gonna make this :)
    thanks, martyn
     
  7. Martyn

    This gives an idea of how torque is affected depending on how you position the extension. It should show at 90 degree even if you change the extension the torque figure does not change but I would say keep it as short as possible so not to introduce too much flex in the bar.

    Cheers Gaz


    Torque Wrench Adapter Calculator - CNCexpo.com
     
  8. Scroll down a way and see how a proper torque wrench adaptor should be....

    Torque Wrenches from Norbar

    The peculiar method of using a torque wrench at ninety degrees to an extension is full of potential problems.....

    ..simply because none of the calculations take into consideration how thick the extension is right where the torque wrench end is levering and trying to rotate in the hole...

    ..the thinner the extension, the easier for the torque wrench to turn in the square hole, thus completely sodding up any calcs and settings.

    You might just as well do the buggers 'by hand and feel' with an open end spanner or shaved down ring spanner.

    AL
     
  9. I've just used a good quality thin walled ring spanner and given it a good old grunt or two. Never lost a head yet.
    But if you're not quite the same level bodger that i am, i've seen the correct tool selling for about £80-90 on fleabay.
     
  10. thanks for the replies everyone, :) martyn
     
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