buckboardjr

I've been running a 19.5 GLS for 23 yrs. I totally gutted it and put new floors/floatation in it in 99. They ARE IN NEED AGAIN in the back. Love the boat . You did a fine job with yours. Here's a shot of mine running coppers off boards, Divers & riggers.

Thanks. Whole filler neck doesn't have access. Would require deriveting structure

Keeping it Reel. Is yours in the splash well? No hurry, but if you get the time and can post a few pics of the cap, I'd like to see it. And if you have calipers and can verify that the threads are tapered I'd really like to know for sure. Also is there an O-ring at the base of the threads that seals in the tapered edge of the bung. I ask because my research of Seachoice and Seadog filler necks showed that they use NPSM threads which stands for National pipe straight mechanical threads and though I gauged my threads as being tapered maybe it is because it is a short amount of threads and even straight threads may gauge as tapered because of so few threads. Thanks

Thanks Keepin it Reel. Well after 3 trips to town/ marinas/ hardware stores, and more precise measuring, and calling Perko, and Marine shop on web, I measured it out to have tapered threads 1.70 down deep and 1.95 at the top with 12 threads per inch using a thread pitch gauge. Come to find out 1 1/2 NPT dimensions are that. So I did a search for 1.5 in. NPT plug with Oring and boom came up with this. Thanks all for looking. None of Perkos's matched up. Went to Johnsons pools and spa and they had them.

Thanks for checking.

Yours looks like it's up on the gunnel. Mine is in the rear splash pan. Thanks for your input

After googling it, I couldn't fine much help. Stores having them don't give much for dimensions or thread pitches. My thread size using inside calipers down in the bore are 1.75 in. to tops of threads so if the threads are 1/8 in. deep, I think my cap's threads would be 2 in. maybe 1 7/8. Any suggestions would be appreciated. Thank

I left you a ph message dropemout.