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Hemi Exhaust Bolts

Old May 11, 2018 | 10:49 AM
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Default Hemi Exhaust Bolts

I asked this question on the FB group, but thought I would also ask here. It appears the exhaust manifold bolt failure issue is not "if" but "when" they are going to fail. Who sells "good" replacement bolts? If the original Mopar bolts are no good, I sure don't want to use them again.
thanks,
Mike S
 
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Old May 12, 2018 | 09:13 AM
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The mopar fix for this is to install higher grade bolts. Of course, it isn't really a 'fix'..... the bolts will still break eventually. The problem is the manifold design. So far as I know, folks that install shorty headers don't have this problem.
 
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Old May 12, 2018 | 10:50 AM
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Better yet don't use bolts at all use studs! Then use fanged lock nuts to keep things tight. I have done this on many header installs with no issues.
 
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Old May 24, 2018 | 08:59 AM
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from 2009 through the new 2019 . i bet its the same thing
mine have been replaced 2xs on 2009 , under warranty
 
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Old May 25, 2018 | 09:31 AM
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I had manifold bolts replaced 4 different times on my 09, most recently about 3 months ago. Always figured that it must be a clearance issue when the manifolds expand/contract with temp.
 
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Old May 25, 2018 | 01:57 PM
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Yikes....my '09 just rolled over 90k, but no noise yet.....

I would think studs would be difficult to install (getting the manifold back on over them) and might be even more prone to breakage???
 
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Old May 25, 2018 | 04:14 PM
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Ok, if this is a known issue, why hasn't FCA/RAM released a viable fix? Appears a 4th GEN issue.
 
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