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What torque value should I use for Rotax 582 engine block mounting bolts?  Also, should I use a thread locking compound (which one?) or lock nuts?  These are 10mm diameter (1.5mm pitch) bolts going into the aluminum engine block.  I can't seem to find definite info on this.

  • Re: 582 Engine Block Bolt Torque

    by » 11 months ago


    Wade....simple, download the heavy maintenace manual from www.flyrotax.com or from www.Rotax-owner.com  All the questions are answered in that manual.  

    Rotax does not use locknuts (in a few exceptions they do) mostly they will use lock washers.  No thread locking is used, just do correct torquing with a calibrated torque wrench.  This is all covered in the manual.  

    Cheers


  • Re: 582 Engine Block Bolt Torque

    by » 11 months ago


    Thanks Rotax Wizard!  I missed seeing that in the manual.  I'll attach a screenshot of that info here - maybe that will help somebody else.  The manual says 106 inch lbs torque.  It looks like the studs that Rotax is using have the 243 Loctite specified for them.  I'm using bolts so I guess I should do the same - maybe.

     

     

    37448_2_Screenshot 2023-09-15 221408.png (You do not have access to download this file.)

  • Re: 582 Engine Block Bolt Torque

    by » 11 months ago


    The studs only need a low setting because they will have the nut and lock pulling the stud down to the mount.  This is normal with any studs; they are not intended to have large forces into the block themselves.  This is typical even with automotive or motorcycle assemblies.  The work is done by the clamping forces of the nuts pulling then to the mounts.  Head studs, when used, are the same principal.  

    Cheers


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