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Pulled Threads.-

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  • Pulled Threads.-

    Is there a repair system besides Hellicoils to repair pulled threads on a crank case ? If so is it an easy fix or need to send crankcase to a machine shop to do the work right ? Please advise.

    Happy Boating
    Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers

  • #2
    I like Time-Serts more than Heli-Coils. Kits for both come with the taps for DIY installation.

    Time-Sert is a solid piece instead of a coil spring affair.

    BOAT SPECS FORUM HELP STARCRAFT FORUM SHOP iboats
    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

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    • #3
      Thanks, will check for them, assume that comes in different sizes and lengths ? Will they hold 30 NM when torquing M10 bolts ?

      Happy Boating
      Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers

      Comment


      • #4
        I used them for 65 ft-lbs or 88 NM. 30 NM is 22 ft-lbs, so yes it will work.

        The website for metric sizes, you will have find a distributor or get them online - http://www.timesert.com/html/mtrcsert.html

        What are you working on?
        BOAT SPECS FORUM HELP STARCRAFT FORUM SHOP iboats
        Please, no PM's (Private Messages) regarding boat/engine problems.
        That is what the forums are for.
        Only forum/moderator issues will be answered in PM's.

        Comment


        • #5
          timeserts are the only fix for northstar head bolts pulling out......yeah they are good, come in many sizes and are a bit pricey.
          1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - http://forums.iboats.com/forum/owner...988-rogue-2420

          Past Boats
          1970 Wooster Hellion - Merc 9.8
          2002 SeaRay 190BR - 5.0 - A1G2 - "Cheasheads in Paradise"
          1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

          What’s behind you doesn’t matter.Enzo Ferrari

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          • #6
            Originally posted by GA_Boater View Post
            I used them for 65 ft-lbs or 88 NM. 30 NM is 22 ft-lbs, so yes it will work.

            The website for metric sizes, you will have find a distributor or get them online - http://www.timesert.com/html/mtrcsert.html

            What are you working on?
            Good to know that, will check link, seems that one or two head bolts threads on powerhead will be shot dead on next head gasket change due to salt seizure with consequent broken bolt and its heat removal done on last restoration, so planing way ahead of time to have those handy. Will check Amazon. Thanks both.

            Happy Boating
            Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers

            Comment


            • #7
              Apart from heli coil....devcon would be my second thought.
              Fire it in there, leave to set and tap the thread.

              Comment


              • #8
                Timesert kits are nice and costly, but for the non experienced seems bit complicated to install, too much tooling, have worked with Heli Coils before. This is the OEM cylinder head bolt with measurements.

                Click image for larger version

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                Was wondering if this repair kit would be appropriate to fit most of the 22 mm threaded extension ?

                Click image for larger version

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                Assume a M10 bolt is a 8.0mm diam bolt as in pic, right ?
                1.5 ? stands for inches/centimeters
                Please advise..

                Happy Boating
                Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers

                Comment


                • #9
                  Yes.........

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                  • #10
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                    Would you say that the posted bolt pic corresponds to a fine or coarse thread ? 1.5 stands for 1.5 cm or 15 mm Heli Coils, what if too short to properly screw in a 22 mm bolt thread ? Will bolt be possible to torque it right to 30 NM cyl head specs ?

                    Happy Boating
                    Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers

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