Blown Head gasket (I think) - KCR408

CHANMADD · #1 (**permalink**) 03-19-2008, 06:23 PM

He has oil in the coolant? The compression was even. Leaking rings are not going to put oil in the coolant....I don't think!

55312 · #2 (**permalink**) 03-19-2008, 06:32 PM

A cylinder leak down test will also look at valve seat integrity and the head gasket seal at each cylinder. A compression test won't do anything but show you an average compression in each combustion chamber. I'm still not convinced either test would show how oil got into the cooling system.

Tim

427Aggie · #3 (**permalink**) 03-19-2008, 08:20 PM

Problem Chris has got is we are talking Small bock vs FE. On the smallblock there are no high pressure oil passages in the heads...so your head gaskets are out...really your only going to get it when oil and water jackets in the block have a leak into them..

you did check the oil to coolant flapper valve right? Make sure thats not stuck

Just kidding..Chris did you have any oil in the coolant? I saw Rob today and he said he had talked to you a couple of times since last week. I might be tempted to flush the system and refil it fresh then run it for a while and flush it again and see if any oil is in the coolant before I freak but how would it get there in the first place..

Keithc8 · #4 (**permalink**) 03-20-2008, 12:21 AM

I have been out a few days with the family since it is spring break for the kids here. This is the first I seen of this but did talk with Rob about it today. The only thing that I can think of at the moment is a possible crack in an oil galley. It might only open up after the engine has gotten to operation temperature. These things are hard to check for and about the only way would be to get the engine up to about 200 and then drain the oil out of the pan and pressure test the cooling system to see if any water runs out of the block. I do not believe I have seen a 351W block cracked from the oil galley to the water passages. About the time we think we seen it all we see something else.
I would do as suggested and flush the radiator good and then the engine again for a while to see if the oil shows up again. I would assume that the car has been where nothing could have froze over the winter. Let me know what you find out. Thanks, Keith Craft

Madmiles442 · #5 (**permalink**) 03-20-2008, 06:58 AM

Chris, let us know if you need help this weekend to get you Austin-bound.
Your T.I.T. is here to help.

damdfw · #6 (**permalink**) 03-20-2008, 07:41 AM

I know this sounds silly, but is there any way one of your kids could have put the oil in the expansion tank. Kids can do the darndest things.