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Hole in head

Old Feb 4, 2018 | 03:11 PM
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Default Hole in head

So how might I fix this,

#6 header bolt was wankie so I thought I'd helicoil it... guess it was a smidge closer than I thought to the exhaust chamber.

What sucks is this is a set of AFR heads.

https://photos.app.goo.gl/RHcWJ86g0F29h4HD3
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Old Feb 4, 2018 | 05:59 PM
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Send it back to AFR for repair and re-drilling the hole and taping it. Put Fel-Pro N1000 on all the exhaust bolts.
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Old Feb 4, 2018 | 07:24 PM
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Or tap it to the largest aluminum bolt that will fit, cut it of, file it flat,f and drill and tap to the proper size. Be sure and locktite r the bolt.
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Old Feb 4, 2018 | 09:01 PM
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I'd send it back to AFR or at least call them and see what they say.
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Old Feb 5, 2018 | 06:09 PM
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Consensus is to throw the helicoil in it and run it
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Old Feb 5, 2018 | 06:19 PM
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Local machine shop can weld it up and retap for cheap I'm sure. **** a helicoil
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Old Feb 5, 2018 | 09:23 PM
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Originally Posted by epfatboy
Consensus is to throw the helicoil in it and run it
It'll leak. I have helicoil then put some jb weld in, it did not leak, that was
not my decision. I wanted to pull head and have it welded, he did not want to
spend money.

EDIT: just reread, thought it was a coolant jacket, I would try just Helicoil, worse thing is
you have to do it right if it doesn't please you.
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