I searched and couldn't find anything on this, so be easy if I missed something.
I'm installing thru hull on a 22 Hammer that doesn't have it at all now. What's the best way to cap the Y pipe without having to remove it from the boat. Is there a special cap for it??

Thanks,
Robert

Both (actually all four) are capped in mine. They were done when I got the boat. Caps came from a plumbing supply house and they are double clamped.

I added thru hull to my Baja soon after I bought it. Thought I would add silent choice sometime but I never found the need so they have been capped for 10 years. I used 4" schdl 40 PVC I believe it was a female clean out with a threaded cap to close it. Just measure the OD of your horseshoe and be sure to double clamp it.

Also I recommend coating your newly cut holes in the transom with resin it will help keep moisture out.

yep got the caps for mine at Lowes.....

Go to home depot and get a couple of the expandable sewer pipe caps with wing nuts on the end. You need to leave the rubber connecting hose on the Y pipe. Looks a little funky but works great. Remember all you are puting them there for is in the event the water level outside is higher then the top of the Y pipe. Not likely.

Mine are actually a rubber cap, sounds like yours are PVC.

Yep........mine were some kind of plastic. I use them now to seal the ends of the exhuast tips when the boat is not in use. Keeps the geckos and critters out of the motor.

Sorry for the stupid question but why are you guys doing this for for a louder boat?

Preformance Dude