Re-torquing the Head Bolts

Discussion in 'Workshop Forum' started by Tavalin, Feb 13, 2020.

  1. Tavalin

    Tavalin Michael Motorcycle

    Location:
    Tampa, Florida
    Now that the X1/9 is running, I will have to re-torque that head bolts. They are 17mm bolts from MWB. I would love it if I didn’t have to remove the valve cover and valve box to do this. However, I am unable to find a 17mm (or a close 11/16) offset wrench for a socket (torque wrench). I am able to find just about every size except what I need.
    Please help with alternatives methods.
    Mike
     
  2. Integrale

    Integrale Daily Driver

    Location:
    Davenport, IA
  3. Mxgrds

    Mxgrds True Classic

    Location:
    Netherlands
  4. Tavalin

    Tavalin Michael Motorcycle

    Location:
    Tampa, Florida
  5. kmead

    kmead Over half way.

    Location:
    Michigan
    3/4 is effectively 19mm, 11/16 is effectively 17mm (17.46) a trifle loose

    Others have spindled and mutilated a 17mm wrench to make the desired bends and welded on a 1/2” square to drive it with a torque wrench.
     
    Tavalin likes this.
  6. lookforjoe

    lookforjoe True Classic

    I made my own. How many miles do you have on it ? I waited 800 miles (link).

    MWB-supplied head bolts have a different torque sequence than stock bolts, so check with them on retorque spec.

    If you want to borrow mine, just cover shipping & return promptly. I'm not in the habit of lending tools. Message me.

    EDIT: I do need to recheck they are 17mm - I had remade them when I switched head bolts

    [​IMG]

    [​IMG]
     
    Last edited: Feb 13, 2020
    Tavalin likes this.
  7. carl

    carl True Classic

    Location:
    Virginia
    The head bolts I got from MWB do not require retorqueing. They look like 124 head bolts which likewise do not require retorquing. Maybe you should check wit MWB on this point.
     
  8. Tavalin

    Tavalin Michael Motorcycle

    Location:
    Tampa, Florida
    Carl,
    The info paper that came with the MWB bolts said to retorque after a certain amount of miles. Not home so I can’t remember off the top of my head what the suggested mileage is.
    Just want to be safe and retorque than to not retorque and have a failure.
    I am going to research this more and see what alternatives are out there for 17mm / 11/16th size offset. There has to be something out there.
    Mike
     
  9. Tavalin

    Tavalin Michael Motorcycle

    Location:
    Tampa, Florida
    Those look awesome!!! Perfect for what we need.
    I will keep you posted, thank you.
    Mike
     
  10. Hybridfiat

    Hybridfiat Power costs money, more p

    Location:
    Australia
  11. Tavalin

    Tavalin Michael Motorcycle

    Location:
    Tampa, Florida
    Hybridfiat,
    That looks good. Pricy for a little tool but will save me from using a lot of colorful metaphors. I will try and find one online.
    Mike
     
  12. Tavalin

    Tavalin Michael Motorcycle

    Location:
    Tampa, Florida
    Taking the recommendations I purchased this tool. I hope it is the same as the Snap On tool. I just need it maybe a couple of times but it will be there if needed.
    Mike
    0816F1B0-DED2-47B9-B708-70B5C7FA8D66.png
     
  13. GregS

    GregS ProjectX

    Location:
    Australia
    Don't forget to recalculate the torque for the different length.
     
  14. Integrale

    Integrale Daily Driver

    Location:
    Davenport, IA
    If the torque wrench is perpendicular to the adapter it should have negligible effect on torque.
     
  15. carl

    carl True Classic

    Location:
    Virginia
    If this is a one time event, maybe someone here can lend you their tool. Sadly I don't have one to lend.
     
  16. If you are using a modern FelPro head gasket you don't need to retorque the bolts. I have never retorqued the bolts (only OE studs/bolts on carb'ed motors) and have never had an issue. This includes my race motors that are much more highly stressed than most any normally aspirated street motor.
     

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