Reply To: Evinrude 1955 Fastwin throttle sync problem

[billw]

I have never used the exact brand of inserts shown in the above picture. However, I have had some experience with that TYPE of insert, when trying to repair spark plug threads. The trouble that I saw with that type, is that no matter how hard we tried to secure them, with red Loctite, epoxy, whatever, they would frequently back out, when the fastener or spark plug was removed. Heli-coils are different, and in my opinion, better. They are basically a coil of metal, used to create a thread. They are bigger than the hole that they thread into. When they thread in, they are under tension to start with. This helps keep them locked in place. When a fastener is removed from a Heli-coil repaired hole, the counter-clockwise action tends to expand the coil and lock it in more tightly, if anything; so they don’t back out. Having used both types of thread repair methods, I will pick a Heli-coil every time.

Long live American manufacturing!