New 360 build with oil leaking into coolant

[chermik1999]

You don't trust the heads? It's only 2 holes. 1 into the bolt hole and 1 out to the deck. But I can check...like 5 mins. I've done everything I can now. Have to get packed and ready to leave for Mexico Monday. Just wanted to make sure wasn't something I missed..

 

[chermik1999]

Well at least I have it nailed to one side still.

 

[dvw]

Why not just drill the block passage oversize. Then sleeve it with a piece of tubing??
Doug

 

[1 Wild R/T]

Yeah, it certainly looks like the block... A quick pressure test will confirm it... On one side I say have fun in Mexico... On the other side I would want to spent the fifteen minutes to know what the final cause of the problem is before leaving....

And yeah, Doug's suggestion would work...

 

[chermik1999]

Yeah, it certainly looks like the block... A quick pressure test will confirm it... On one side I say have fun in Mexico... On the other side I would want to spent the fifteen minutes to know what the final cause of the problem is before leaving....

And yeah, Doug's suggestion would work...

My thoughts exactly. It's gonna eat at me..lol

 

[chermik1999]

Why not just drill the block passage oversize. Then sleeve it with a piece of tubing??
Doug

Yuup...if it's in that part of the block.

 

[chermik1999]

Yuup...if it's in that part of the block.

Either way i have to rip it down and start shaking it down. I've just run out of time.
I would put expansion plugs on the cam bores first. That feeds top and bottom. Then I isolate everything to one location. At that time I can focus on it in more depth. My labor is cheap. A machine shop would be a fortune.
If it's found it's in that galley between the cam and deck to the rocker, a new block is easier then messing around with this one. And what if it has other issues later elsewhere because it indeed had be compromised be being frozen for example?

 

[dvw]

May just have be a fat spot in the water jacket. The drill and tube is easy at home.
Doug

 

[chermik1999]

May just have be a fat spot in the water jacket. The drill and tube is easy at home.
Doug

Don't understand?

 

[1 Wild R/T]

Don't understand?

If the sand core slumped during casting the block you would wind up with a thin area... But it had to seal when it was running, perhaps the cooling system rusted in the critical area which a slump would cause a porous area in the casting prone to rusting.... It's quite possible... But so is the freeze theory...

 

[chermik1999]

If the sand core slumped during casting the block you would wind up with a thin area... But it had to seal when it was running, perhaps the cooling system rusted in the critical area which a slump would cause a porous area in the casting prone to rusting.... It's quite possible... But so is the freeze theory...

OK...but if it's inside, it's not repairable. For me I just think it's easier to do another one than keep chasing unicorns. I ran the scope down the Dr side for the heck of it. Looks solid but there are areas that have extensive scale/rust and in future do I want to risk a blowout later on the other side? Also those 2 cast pieces I recovered worry me too. Where did they come from? What's next?
That's how I feel...

 

[chermik1999]

Yes, which is why I suggested a rubber tipped blow guy... The rubber tip would seal at the very outer edge of the hole..

Good catch R/T.

SOLVED!
I never would have thought....

 

[1 Wild R/T]

Not a great outcome, but at least the short block & one head are good.... Enjoy your time in Mexico...

 

[chermik1999]

Haha...they're new so I'll get new ones and gaskets. Sucks but glad its over.
So greatful to you and the group. This service is invaluable...I'm a member of all 3 and glad to do it.
Thanks again.

 

[dvw]

My bet is the head could be easily sleeved as well. Doubt if it's cracked. Most likely core shift. Either oil feed passage or the head bolt hole. The head bolt holes in my Indy -1's are ported far enough that the head studs that go between the intake ports had to be sleeved. Those studs hold torque as well as the rest and have never caused an issue.
Doug