Intake Manifold Carb Mount Hole Stripped

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Old May 9th, 2016, 07:10 PM
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Intake Manifold Carb Mount Hole Stripped

Has anyone ever run across one of the carb mounting holes that appear to be stripped as the nut will not tighten on the stud fully. Of course the stud is the one where the throttle linkage bolts down so I have a potential leak and my linkage is not tight. I'm assuming a helicoil install but have never done one before. Any advice?
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Old May 9th, 2016, 07:31 PM
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Helicoils are very easy to install. Buy a complete kit that includes the drill bit, tap, helicoils and tool. You won't need to pull the manifold but use some sort or a bit stop so you don't drill too deep. Use some blue thread lock.
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Old May 10th, 2016, 06:59 AM
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This is not uncommon on aluminum intakes. This is also why I am very scared of the engine lifting plates that bolt to the carb flange.
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Old May 10th, 2016, 10:37 AM
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Originally Posted by joe_padavano
This is not uncommon on aluminum intakes. This is also why I am very scared of the engine lifting plates that bolt to the carb flange.
Dream on Joe. What guy in his right mind would use a lifting plate on a intake with bad threads. I have been using a lifting plate for 15 years and never had a problem. I would say it is a isolated problem. JMHO
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Old May 10th, 2016, 10:46 AM
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Maybe i shouldn't have said dream on. Joe how do you know your bolts for your lifting chain isn't cracked? How do you know the threads in the hole for the bolts to hook up the lifting chain are not stripped?Isn't that all about checking.
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Old May 10th, 2016, 04:51 PM
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I would try running a bottoming tap in the hole, you never know the hole may have not been tapped to the bottom. Might just get lucky with a few extra threads. Otherwise helicoil or timeserting is your only option.
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