[garagenc]

I bought a new I/O 350 chevy motor, installed it and it has been running good. I went to reset the valves and found water in the oil. I changed out both risers and the stbd exhaust manifold when I put the new motor in. I looked at the old exhaust manifold (port side) and cant find anything but I'm going to change it out anyway. I did a compression test and they were between 180-190 psi. I pulled the intake and did a hydro test (estimate 25psi) on the motor and didn't see or hear any leaks. when I pulled the water hose off 15 minutes later it it still had a lot of pressure on it.

During the winter like now (outside water temps 45 dgs) my motor (this one and previous one) never gets any heat in it, the temp gauge never reaches 100 degress. I've changed the thermostat (165) and temp sensor and it stills read the same.

Has anyone ever had a intake manifold get a crack in it?

None of my gaskets looked like they were leaking.

The back water passage on each side the intake is blocked off, the intake gasket for that area is solid except for one small hole in it (both sides).

Could I be getting condensation build-up caused by cold temp and then it's building up from my fishing trips until it looks like a major water problem or is something wrong with the intake or gasket or it could be my exh manifold.