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Stripped Crank Threads!!!

This is a discussion on Stripped Crank Threads!!! within the External Engine forums, part of the LSx Technical Help Section category; okay... putting on the spec flywheel on today and used the bolts that came in the box(pressure plate bolts!!) that ...

  1. #1
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    01 M6 SS Turbo

    Stripped Crank Threads!!!

    okay... putting on the spec flywheel on today and used the bolts that came in the box(pressure plate bolts!!) that were about 1/2 inch shorter than the stock flywheel bolts. well, I was torking them down and the first one stripped!!! So I took it out and replaced it with the original bolt and it went in fine. I know that there is atleast 3/8... maybe half inch of good threads and the wrench clicked at 70 ft lbs. Do you guys think it'll be fine? Everything went together well, that aside. I just cant stop worrying about it. I'll have the car ALL back together tomorrow.

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    well, it seems she's holding up... i've only driven about 20 miles, but all the bolts seem like they are holding. No weird noises yet. I can hear alittle Swoosh like noise when it revs down, but I just think it's the weights on the pressure plate.

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    Damn that sounds like my luck. Hopefully everything will work and you won't have any problems.

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    I don't know about this...if it were me I wouldn't leave it to chance. If a flywheel lets loose it is going to do a fair bit of damage. I'd have called spec to see what they had to say about the matter, first of all.

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    01 M6 SS Turbo

    no loctite, but I don't think I need any with that much torque on the threads. It has held together now for about 150 miles of varried rpms and heat cycles, so I think it's fine. I asked the machine shop here and they said it would have been better to chase the threads out, but they think it'll be fine. I really doubt the flywheel would come loose, after all, there are 5 other bolts that are in properly and all torqued down multiple times.worse case scenario I think is that the bolt comes loose and gouges up the clutch and flywheel. I'm not pulling the tranny for a 3rd time unless I HAVE too.

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    01 M6 SS Turbo

    well... it's been afew days and it seems to be holding together fine even after afew high rpm runs. Just curious though, what would a loose flywheel bolt coming out sound like? will they just fall out and clink around?

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