ARP crank bolt stripped/damaged threads

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Apr 8, 2013 | 09:19 PM

jlee29

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ARP crank bolt stripped/damaged threads

I removed my ARP crank bolt and the end threads were damaged. Im not sure if the threads inside my crank are messed up as well? What would you guys suggest? I have two new TTY GM stock bolts laying around, I could use them and see what happens. Maybe I'll take my old TTY bolt cut a cleaning grove like you do when cleaning head bolt holes out and see what I come up with. Thanks.

This bolt was only use one time.

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Apr 8, 2013 | 09:21 PM

jlee29

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Sorry guys when I preview the post the pictures are embedded, but once i post it they are not. This is the second time thats happened. I'm not sure why the forum isnt supporting Flickr photos.

Apr 8, 2013 | 10:28 PM

badazz81z28

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That's odd...What part # did you use? LS1? or LS7?

Apr 9, 2013 | 07:02 PM

jlee29

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Ls1 part # on a LQ9. I used it for about 2k miles on one motor and just went to re install it on another and it did this.

Apr 21, 2013 | 08:34 AM

jlee29

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I ended up taking an old crank bolt and gringing grooves down it like what you do with head bolts. After a few passes throught the crank it cleaned everything right up.

Apr 23, 2013 | 05:46 AM

01ssreda4

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I assume you used a longer bolt to install your balancer.

Apr 29, 2013 | 10:29 AM

jlee29

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No I just used an old stock TTY bolt, I hit the balancer with a dead blow hammer to get it started and to be able to grab some more threads. Next time I would probably just get a longer bolt, if I can find one.