i helicoiled the five manifold bolt holes in the head of my car without problem - its easy to do (drill out old thread and re-tap) and can be better than the original threading in some cases... obviously easier on alloy than mild steel... ;-)
@bazzason started
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i helicoiled the five manifold bolt holes in the head of my car without problem - its easy to do (drill out old thread and re-tap) and can be better than the original threading in some cases... obviously easier on alloy than mild steel... ;-)