screwed head thread up,what to do
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screwed head thread up,what to do

  1. #1
    senior member turbo wog's Avatar
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    Default screwed head thread up,what to do

    pulled a helicoil on my brodex head.aluminum broke away cant put another helicoil in.do they have a fix for this problem?
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  3. #2
    gn7
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    Last edited by gn7; 04-21-2013 at 10:51 PM.

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    senior member turbo wog's Avatar
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    Quote Originally Posted by gn7 View Post
    thanks gn , will there be a problem drilling this with one side @ 1/2 deep & the other side in the wall of the head , being it is on the block & would be drilled by hand? on is this a mandatory pull the head deal?

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    Loose Nut on the Wheel michaellone's Avatar
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    Looks like you need to have it welded back up and re-tapped. Don't know if you can do it on the motor, sounds sketchy.

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    Senior Member Bigblockbill's Avatar
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    Keensert... or equivilant, like the link GN7 posted above. I like them a whole lot better than helicoils anyway. Plus they use standard size taps.
    Last edited by Bigblockbill; 04-22-2013 at 07:04 AM.
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    You can do it by hand but the chance of getting the angles right is between slim and just dumb luck. The head should come off and this should be done in a mill or seat and guide machine. The angle of that rocker stud is pretty critical.
    Keensert, Timesert, or I have some shouldered inserts that I use...all will work just fine. It just needs to be done right.
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    Senior Member Reservoir Dog's Avatar
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    paul, with that access hole next to the stud, i would just put a nylock and washer on it

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    Quote Originally Posted by steelcomp View Post
    You can do it by hand but the chance of getting the angles right is between slim and just dumb luck. The head should come off and this should be done in a mill or seat and guide machine. The angle of that rocker stud is pretty critical.
    Keensert, Timesert, or I have some shouldered inserts that I use...all will work just fine. It just needs to be done right.
    I agree with Steel.. I've pulled a couple helicoils out of my 427s and had to put Time Certs in using our Seat and Guide machine, which made it really easy and maybe 30 min job depending on setup time.. I know it's a pain in the ass but like Steel said, you should pull the head!!
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    Senior Member stix818's Avatar
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    Not sure if the picture is deceiving but by the looks of it a couple of them look tired!! Maybe just some SWAK?
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    gn7
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    I have done it with the head on the block. Had to make up a jig using drill guides for the drilling and tapping. Between the parts and the time to make it up I could have pulled the head. But I figured I be using it again at some point. And it only fits the intake side. I have yet to pull an exhaust.



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    senior member turbo wog's Avatar
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    thanks guys, i eyeballed it with 2 other sets of eyes . took the bolt out next to the stripped one & put a long bolt in it as a visual guide. insert went in easy . kinda worried how easy. put red gel loctite on it & gonna see if it will hold tomorrow . should they go in easy? did not seem to be sloppy though.

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    senior member turbo wog's Avatar
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    Quote Originally Posted by Reservoir Dog View Post
    paul, with that access hole next to the stud, i would just put a nylock and washer on it
    how 'bout a wheel stud

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