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Torque Specs

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  • Torque Specs

    This topic comes up from time to time, so here's a list of common torque specs straight from the Zenoah manual:

    There will be (3) #'s, the first will be the screw size, the second will be standard torque rating, the third will be the limit range of the torque applied. I have this all listed in kg/cm. To convert to lb/in just multiply by 5.6.

    Carburetor: M5; 35; 35-40
    Insulator: M5; 35; 35-40
    Clutch: M6; 65; 50-80
    Rotor: M8; 130; 100-150
    Cylinder: M5; 70; 70-80
    Crankcase: M5; 65; 50-80
    Spark plug: M10; 110; 100-120
    Muffler: M5; 90; 70-100
    Fan cover: M5; 35; 30-40
    Ignition coil: M4; 33; 25-40
    Starter case: M4; 13; 10-15
    GTR 460, GSR40 TSi, GSR40, Riot, Bigfoot, Sport, SGQ46, Evo 2X, Super GrowPed, TRQ....OHH YEAH!

  • #2
    Thanks a lot for posting this, even DDM was unable to come up with this.

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    • #3
      This is very helpful. If anyone has any more specs please post. This is definite qualifier for a sticky.
      Originally posted by rocketped
      Damn Texan

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      • #4
        These added specs where pulled off my zenoah 230/260rc manual


        Carburetor: M5; 35; 35-40
        Insulator: M5; 35; 35-40 (with locktight)
        Clutch: M6; 65; 50-80
        Rotor: M8; 130; 100-150
        Cylinder: M5; 70; 70-80
        Crankcase: M5; 65; 50-80
        Spark plug: M10; 110; 100-120
        Muffler: M5; 90; 70-100
        Fan cover: M5; 35; 30-40
        Ignition coil: M4; 33; 25-40
        Starter case: M4; 13; 10-15
        Tapping screw: TP4.3; 25; 20-30

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        • #5
          I'm a torque-spec nut. I've got torque wrenches and torque screwdrivers for everything. The vast majority of the time, you'll know when it's tight enough by feel, but unless you actually torque something with a calibrated tool, it's really just a best guess.

          I wish I had found this info a long time ago.
          GTR 460, GSR40 TSi, GSR40, Riot, Bigfoot, Sport, SGQ46, Evo 2X, Super GrowPed, TRQ....OHH YEAH!

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          • #6
            Wow. Very nice, been looking for this info for a long time now. Thank You.

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            • #7
              omg great specs. What kind of torque wrenches do you use pedguy?
              Instagram: @base_cat

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              • #8
                Can't stress enough how much proper torque specs will keep your engine/Ped in much much better shape. Especially when you go to remove the bolts/nuts they will thank you by giving you a longer "service life." Instead of over torquing the fan cover or flywheel/clutch/motor mount nuts and pipe mounts to keep the bolts from vibrating out make sure the threads are clean(on both ends) and use the appropriate Loc tite and let it cure correctly. I've personally never used a torque wrench on my Ped but I am now. Haven't been able to play with my peds lately but the past year working on cars I see the importance of attention to detail and following specs like this. when you go to put everything back together is when you will really thank yourself. So do both your Ped and and yourself a favor and invest in a couple decent sticks and you won't ever look back.

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                • #9
                  I made a printable spreadsheet with the torque specs and their proper conversions in kg-cm, in-lbs, and N-m on Google Sheets here:

                  https://docs.google.com/spreadsheets...it?usp=sharing

                  There are links to the Amazon and Harbor Freight 1/4" torque wrenches on the spreadsheet. Note the Harbor Freight 20% coupon that's basically always available and can be used to purchase online or in-store. I got mine for $18 using the coupon and it worked for me on a GP460 build.
                  Last edited by StreetSurfer; 08-24-2015, 09:27 PM.

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                  • #10
                    Photos of the torque wrench from HF. One sets the torque by rotating the knurled knob at the bottom of the wrench to the desired torque measurement. Once that amount of torque is achieved the wrench will "click," at which point one knows the desired torque is achieved. Make sure the torque is set to the minimum setting (on mine that is 20 in-lbs) for storage to maintain proper calibration of the wrench. It is very easy to use.

                    1-14-IMG_9284.jpg

                    2-15-IMG_9285.jpg

                    3-16-IMG_9286.jpg

                    4-17-IMG_9287.jpg
                    Last edited by StreetSurfer; 08-24-2015, 09:33 PM.

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                    • #11
                      I made a video on how to use a torque wrench. Note the "click" of the wrench that signals the torque measurement was reached. For these bolts I was going for 35 kg-cm.

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                      • #12
                        https://youtu.be/ierXNyQAd-E

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