The threads on pencil zincs, at least the ones that I purchase, are standard threads. I've purchased matching tap and die and use them to clean up poor threads, or when I drill out the plugs for reuse. *Rudy & Jill Sechez * *BRINEY BUG-a 34' Sail-Assisted Trawler * *Anchoring Consultants-trawlertrainingabc.com* *850-832-7748 * *Georgetown SC Northbound-Chesapeake*

I soak the plugs in Muriatic acid to get the remnants of the old zinc out. Rudy wrote: The threads on pencil zincs, at least the ones that I purchase, are standard threads. I've purchased matching tap and die and use them to clean up poor threads, or when I drill out the plugs for reuse.

Richard, Approximately how long do they soak? Thanks Jim MY Kokomo Hatteras 48 LRC Jim Felds, mobile On Sun, May 10, 2020, 9:48 PM Richard Allen via Trawlers-and-Trawlering < trawlers@lists.trawlering.com> wrote: > I soak the plugs in Muriatic acid to get the remnants of the old zinc out. > > Rudy wrote: > > The threads on pencil zincs, at least the ones that I purchase, are > standard threads. I've purchased matching tap and die and use them to clean > up poor threads, or when I drill out the plugs for reuse. > > > > _______________________________________________ > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > > To unsubscribe or modify your subscription options (get password, change > email address, etc) go to: > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited. >

> > > Dear List, I replaced both of mine on my Iveco engine with bronze plugs. With just a little TLC, the old one screws off and the new one screws on. I soak my plugs in a small citric acid bath to chemically clean the threads of any residue. Knock on wood I have had none of the problems discussed in this thread. Iveco uses these plugs on engines that as emergency backup in the field, like for cell towers. I have no clue why they are not standard on a engine in a marine application. Lee Levent Marina, Izmir Turkey