Vince gould

53 minutes ago, Bozeman Bob said:

Your  main bellow is cracked and that's where your water intrusion into the gimbal bearing is coming from. Not your exhaust,they are two separate circuits. While your changing that out do the shift bellows as well. NAPA sells those parts. Then make sure the engine is aligned to the gimbal.  Thru hull pipes would be a expensive time consuming loud fix.  Exhaust manifold do not have any pressure so if there cracked where you can JB weld them they may hold up. One other option is ebay and just replace them. I drain all the water out of my block and exhaust manifold ,blow some air into all the openings and use a pick to make sure the exhaust holes are clear of debris. Air don't freeze.

Thanks! As for the gimbal, should I replace it or just grease it? It was replaced a few years ago. 

Looking for advice please. Cracked the Y pipe last winter. fixed with jb weld. The boat ran great. This winter I cracked both exhaust manifolds. Boat ran fine and they didn't leak on driveway test. Took out and ran up the river 1/4 mile and the gimbal bearing started howling. 

Does the exhaust go over the gimbal? 

Can I remove all of this and run thru hull pipes?

any help is very much appreciated.