Monkey Butler
Quote: How many threaded holes were done with Helicoils out of the box? Lore in my biz says that everything was helicoiled.
Up until 5 years ago NOTHING was helicoiled on a sub. Every hole that was damaged was welded up redrilled and threaded.
The last 15years I was there I was promoted to the engineering division and wrote paperwork to accomplish new installations or repairs.
The last 5 yrs ago Navsea has allowed helicoils to be used but only on non subsafe components and only on certain items.
It is still preferable if you have time to weld,drill& rethread you do that in lieu of helicoils.
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1991 V-20 cuddy I/O 350 volvo duo prop, 1998 15ft Grumman 9.9 Johnson 
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