EVO All Evo Model Discussion

stripped rocker box bolt

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Old Aug 9, 2009 | 10:00 PM
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Unhappy stripped rocker box bolt

One of the bolts on the cover of my box stripped. I overtightened it, what is the best fix for this.
 
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Old Aug 10, 2009 | 05:13 AM
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I have had good luck with Helicoils.
If you don't want to do it, a machine shop can help you out.
 
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Old Aug 10, 2009 | 07:51 AM
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its up to you, you could take it off and heli-coil it or tap it next size, metric, and use a metric bolt. best way is to take it off and heli-coil it.
 
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Old Aug 10, 2009 | 09:23 AM
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whats a heli-coil. where can i get it?
 
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Old Aug 10, 2009 | 10:26 PM
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http://www.emhart.com/products/helicoil.asp

Great fix as long as you have the radial and axial clearance to fit the slightly larger helicoil... as well as the ability to drill and tap the damaged tapped hole for the helicoil.
 
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Old Aug 11, 2009 | 05:54 AM
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Most auto stores like NAPA, advance auto,etc carry heli-coils. Hope this helps.
 
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Old Aug 11, 2009 | 08:15 AM
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Yeah, a helicoil from the auto parts store. Aren't those 1/4x20? Most of the little bolts are. Now, can you get to the thing? If it's outside the frame area, you lucked out. If it is under the frame, you're probably going to have to pull the head. You can do it all without a drill. I have found that usually the drill bit that the kit comes with can just be turned in by hand and it will just clean out anything left of the old threads. Then you run the tap in, then the coils.
 
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Old Aug 11, 2009 | 04:51 PM
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You say the bolt is stripped...Do you really mean the threads in the head are stripped?
 

Last edited by Dan89FLSTC; Aug 11, 2009 at 05:01 PM.
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Old Aug 11, 2009 | 05:59 PM
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Not the bolt. But its one of the four bolts that hold thetop part of the rear rocker box on. I put new gaskets on the top end because I blew a head gasket and when I put the thing back together the last bolt I put in stripped the hole. Murphys law I guess.
 
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Old Aug 12, 2009 | 10:20 PM
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Thanks guys I used the heli coil and it worked perfectly.
 
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