Originally Posted by
Glowgeek
Had thought of that John. The threads in the cylinder are already cut for 5/16-32. No dies available for that. The bore for that threading is already the max before valve seat interference/heat transfer becomes an issue. What I need at this point is to find the insert manufacturer the hole was drilled and tapped for, or have someone machine a custom insert. I don't have a metal lathe at my disposal.
As far as I've been able to research, Timesert is the only insert manufacturer that uses opposing matched threading for ID and OD. I.e. the same thread pitch for internal and external threads. Going to give them a call today. Maybe there is a Bigsert kit (1/4-32) that they can provide but don't advertise. Worth a try.
5/16-32 Die
Wurth - Time serts are the only thread inserts that I have used other than a helicoil / recoil, and I don't like those as much as the threaded inserts... all the other brands only offer 1/4-20, 1/4-28... is it possible someone made their own insert?