Well... this is painful.
I recently picked up for $200 a 16' 1980 SeaSwirl with an OMC 400 stringer drive, 2.5L 120HP engine.
All the wooden motor mounts/stringers/etc were rotten out, I have another thread talking about repairing all of that. (Should've quit while I was ahead and not started digging into the subfloor...)
At this point the engine is out of the boat. Before I pulled it, I hooked up water to the engine and got it running. I only ran it for a couple of minutes, it was just a sanity check before continuing on the project.
I noticed that water was seeping out of the exhaust manifold near where the manifold drains are located, looks like there is a crack of some sort there. I didn't put too much thought into it at the time. I had checked the oil before running it, it was at a normal level... unfortunately, I did not think to check it again afterwards.
I've now dumped over a grand into this thing working on the restoration, and my mind came back to the leaking manifold. I went out and checked the oil again after a bit of research and found the dipstick tube nearly full of milky oil.
Is there any chance this is just from the rotted out exhaust manifold? Or is it a pretty sure bet that the block is cracked? Maybe a bad head gasket?
I've seen a couple other threads on this topic and the first step seems to be to pressure test the block... planning on working that out tomorrow. I'm just terrified at how much water got into the oil after just a couple minutes of run time, and I'm afraid that the engine is toast.
Really hoping somebody can console me and say that it's possible it's all from the manifold or head gasket, but I'm highly doubting that at this point....
Appreciate any input here.
I recently picked up for $200 a 16' 1980 SeaSwirl with an OMC 400 stringer drive, 2.5L 120HP engine.
All the wooden motor mounts/stringers/etc were rotten out, I have another thread talking about repairing all of that. (Should've quit while I was ahead and not started digging into the subfloor...)
At this point the engine is out of the boat. Before I pulled it, I hooked up water to the engine and got it running. I only ran it for a couple of minutes, it was just a sanity check before continuing on the project.
I noticed that water was seeping out of the exhaust manifold near where the manifold drains are located, looks like there is a crack of some sort there. I didn't put too much thought into it at the time. I had checked the oil before running it, it was at a normal level... unfortunately, I did not think to check it again afterwards.
I've now dumped over a grand into this thing working on the restoration, and my mind came back to the leaking manifold. I went out and checked the oil again after a bit of research and found the dipstick tube nearly full of milky oil.
Is there any chance this is just from the rotted out exhaust manifold? Or is it a pretty sure bet that the block is cracked? Maybe a bad head gasket?
I've seen a couple other threads on this topic and the first step seems to be to pressure test the block... planning on working that out tomorrow. I'm just terrified at how much water got into the oil after just a couple minutes of run time, and I'm afraid that the engine is toast.
Really hoping somebody can console me and say that it's possible it's all from the manifold or head gasket, but I'm highly doubting that at this point....
Appreciate any input here.