Cooling water pressure

[Brad_Ct]

Does anyone know how much water pressure is generated from the pumps for the cooling system? Getting ready to start pressurizing my cooling system with compressed air on my SX230 to see if I can figure out how water in getting into the oil.

 

[WREKS]

@buckbuck has calculated about 25PSI. My milky oil problem turned out to be an erosion canal in the head by cylinder #1. Was able to fix it with JB marine weld. I think water turned to steam and sweated back past the rings into the block. Here is the link: Milky oil repair It became somewhat involved because the head had to be removed.