Hey guys I have a pair of some weird manifolds which I suspect they are leaking because my oil keeps gettin water in it, I changed the headgaskets heads were sent to machine shop to be shaved, and am still getting water in oil these manifolds seem
To have been home made

Friend throw those junk pipes as far as you can . I hope you didn't ruin a good engine with those . You can find good used exhaust manifolds in the swap section cheap . Who ever sold you those should be nutted .

I know I gotta throw them away for sure but I don't know if I should buy new ones and then the motor still be getting water in the oil

If the milky oil started after installing those abortions then be assured they are the source . Are those water cooled ? i don't see a water inlet . Water coming into cool engine exits via the water cooled exhaust . There is a wealth of information here , study and ask questions before you do anything . Don't be the " Knowledge gained is in direction proportion to parts ruined " guy . Lots of good guys here willing to help for the asking .

Yea , that's what i was getting to . Hope someone didn't plug water dumps on thermo housing to run dry pipes .

The pipes are not dry they are wet also when I took them off from the engine they had water indeed the exhaust part..

That's proof positive right there that's your problem . Check for damaged valves and guides and hopefully it's limited to that .

After doing the heads I only took it out on the water for ashore period of time you think it could of damaged the valves and guides?

Fresh oil and a compression test will tell you about the valves . Who knows , you may be lucky . Water on hot exhaust valves turns to steam , up the valve guides it goes and condensates under the valve covers , water droplets then drip into the oil turning it to milk .