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Thread: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

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    Steve Pierce's Avatar
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    Default SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    https://www.lycoming.com/sites/defau...20Complete.pdf

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    Gilbert Pierce's Avatar
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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Anyone working on their airplane should have page 1-42 & 1-43 close to their tool box.

    Of course you all have a calibrated torque wrench.i

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Did you notice that the exhaust nut torque is back on there?

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Thanks Steve.
    Fly safe fly low fly slow

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Quote Originally Posted by Steve Pierce View Post
    Did you notice that the exhaust nut torque is back on there?
    I thought it had always been there just hard to find. I could not find the torque value for exhaust port nuts which previously was 160 to 180 in-lbs to attach the exhaust stacks to the cylinder
    Figure 906 on page 1-38: 40 in-lbs. on the exhaust port studs.
    906
    ALL
    5/16-18
    Exhaust Port Studs
    40 in.-lbs. min.

    Last edited by Gilbert Pierce; 10-05-2017 at 09:43 AM.

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Quote Originally Posted by Gilbert Pierce View Post
    I thought it had always been there just hard to find.
    For information to others the exhaust stud torque is figure #906 on page 1-35. 40 inch-pounds minimum.
    Actually that is the exhaust stud driving torque. The next line is "Nuts to Attach Exhaust Stacks to Cylinder Head 160-180 in. lbs. That was not in my old table of limits but I had penciled it in from something you found several years ago.

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    OK page 4-35 lists the exhaust flange nuts as 160 to 180 inch-lbs.

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Quote Originally Posted by Gilbert Pierce View Post
    OK page 4-35 lists the exhaust flange nuts as 160 to 180 inch-lbs.
    Page 4-35 is for vertical engines. I wonder what the difference is or did they forget to list this value in the first section?

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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    That confused me also, Steve set me straight. too. That page shows the difference between the vertical engines and the others.
    look at the line for the exhaust nuts, there is no engine model listed, it says ALL. Look at post #5 above with the line copied from the SB.

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    Zac Weidner's Avatar
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    Default Re: SSP-1776-3 Lycoming Table Of Limits and Torque Value Recommendations

    Quote Originally Posted by Gilbert Pierce View Post
    That confused me also, Steve set me straight. too. That page shows the difference between the vertical engines and the others.
    look at the line for the exhaust nuts, there is no engine model listed, it says ALL. Look at post #5 above with the line copied from the SB.
    Ahhh, I see now. Thanks for pointing that out. That's a tough one to find.


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