Double post...again.

Put a block-off plate over each of the 4 water passages on the heads with an intake manifold gasket on there. Fire up the pressure tester. If it doesn't hold pressure, it is not the manifold gasket or the intake itself. And you have the added advantage of being able to check for head gasket water leaks-which are now air leaks-under the intake which is no longer there. Oil cooler. Pressure test it by itself while it is out. Either the water or the oil side.

Hopefully he just forgot to torque down the intake bolts. I'm hoping for the best for ya.

Dropped off this morning and he already has the heads off

said the head gaskets were fine. Also doesnt think its an intake gasket

he said there looked like some built up rust at the bottom of the cylinder walls that he doesnt think is from water being in there for a week. Hes wondering if it started leaking last year? Ive been religiously checking oil and have seen no signs of water untill now

i did pressure test my oil cooler. I plugged one oil line fitting and used a hose barb in the other and hooked the radiator testor to it. Pumped it up to 25# and it was still at 25# an hour later........good?

havnt checked exhaust yet cause im not sure how i can? If it was exhaust related i would think it would have hydro locked? He said it had more water in the motor the. Hes ever seen. In his opinnon there is no way it could have been flushed. At this point its a complete tear down

Have him put heads on and pressure test. He can probably even use head gaskets over...for pressure testing. Email me his number and I will describe my test rig to him. The good news is he is on it. My biggest fear was he was gonna get to it mid-august or so.

Bummer to hear especially since the problem isn't immediately obvious or simple. Keep focused on that first beer on the water once it's sorted. Best of luck!

Thank you. Its a bumer for sure. It starting to sound like this could be a exspensive fix.

He is gonna finish tearing it down today and inspect even closer. He will be checking the block and heads if he doesn't find the smoking gun. I cant really complain about the builder. Hes s good dude and so far is basically stopping on his other builds to get me back running. I know he is just as curious as i am right now

he definitly wants the exhaust verified to at least rule it out. Anyone have any ideas on how i can pressure check them? Its stainless marine manifolds and tails.

So far the only thing i have to go on is the fact that this happened in the span of 10-15 minutes, motor still holds compression on all 8 cylinders, water in#5 and rust build up in the bottom of the cylinder walls.

Stupid phone.

You can leak test them at no pressure. Stand them upright and fill water passage till it comes out the riser. Look in exhaust ports for water coming in. Won't tell you they are for sure good, but it'll for sure tell you if they are bad. As far as capping off water exits in risers to use pressure, you need to get a little creative. They have balloons and such. Put in to block water holes and inflate them, stuff like that. I still think he should pressure test the block and heads. You may well never see a hole by using eyeball. Now, if he removes rotating assy and sees nothing, he can still bolt on the heads and pressure test the empty block. Those are dry joint manifolds. Unhook water hose to risers and cap them. Turn on hose into manifolds. Look for water in ports. House water is 30 to 50 psi.

Yep just got off the phone with jerry at stainless marine. He said i have an old system but still thinks its ok. He walked me tjeough how to test the manifolds and risers so i ll start on that tonight.

Also he said the pieces inside ratteling around are actually zincs that were inside the fittings at one time. No worries about them as they wont hurt anything