Re: Hemi Help OIL IN COOLANT
[Re: scatpacktom]
#1702981
11/24/14 08:37 PM
11/24/14 08:37 PM
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Joined: Jan 2003
Posts: 7,489 Minnesota
Hemi_Joel
master
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master
Joined: Jan 2003
Posts: 7,489
Minnesota
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That really stinks when something like that happens on a new build. Could be a head gasket.(hopefully)Did he use copper gaskets? Knowing the lack of qc on those early blocks, it's probably a flaw in the block.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Hemi Help OIL IN COOLANT
[Re: dvw]
#1702983
11/24/14 10:25 PM
11/24/14 10:25 PM
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Joined: Dec 2012
Posts: 1,823 Wind Gap,Pa.
Sammy
top fuel
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top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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Quote:
A freind had an aftermarket block recently that the oil feed passage to the head was into the coolant passage. Easy to diagnose. Remove the oil pressure fitting at the back of the block and plumb shop air to it. Ours blew coolant all over. Ended up pulling the heads and watching for bubbles. Just below the deck on the right side the passageway broke through into the coolant passage. Doug
Head gasket issue
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Re: Hemi Help OIL IN COOLANT
[Re: dvw]
#1702984
11/24/14 10:46 PM
11/24/14 10:46 PM
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Joined: Jan 2003
Posts: 1,938 Sonora CA
Mopar_Rich
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,938
Sonora CA
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Quote:
A freind had an aftermarket block recently that the oil feed passage to the head was into the coolant passage. Easy to diagnose. Remove the oil pressure fitting at the back of the block and plumb shop air to it. Ours blew coolant all over. Ended up pulling the heads and watching for bubbles. Just below the deck on the right side the passageway broke through into the coolant passage. Doug
I have seen this several times with the later blocks that feed head oil directly from the galleys. I even had a KB block do this because the gun drilling drifted slightly. Fixing it however took some work because we had to epoxy in a tube.
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Re: Hemi Help OIL IN COOLANT
[Re: Cudajon]
#1702986
11/25/14 11:14 AM
11/25/14 11:14 AM
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Joined: Jan 2003
Posts: 3,103 Phila Pa
scatpacktom
OP
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OP
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Joined: Jan 2003
Posts: 3,103
Phila Pa
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The trick here is to "be inside the cooling system" to see where the oil is blowing through. I'm pretty sure testing each passage individually will be the way to find the issue.
I have some ideas about pressure testing the cooling system first though. Trying to get the coolant to leak into the oil would be easier to find.
Odd thing is coolant doesn't leak into the engine when it isn't running.
Could it be just a head gasket?
I'm thinking it has to be between the cam and the rockers.
Last edited by scatpacktom; 11/25/14 11:15 AM.
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Re: Hemi Help OIL IN COOLANT
[Re: scatpacktom]
#1702987
11/25/14 01:41 PM
11/25/14 01:41 PM
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Joined: Jan 2003
Posts: 7,489 Minnesota
Hemi_Joel
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master
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Posts: 7,489
Minnesota
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Big Shooter, It could be a head gasket if it leaked between the oil feed for the head and the water hole in the deck. See picture:
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Hemi Help OIL IN COOLANT
[Re: Clanton]
#1702990
11/26/14 04:15 AM
11/26/14 04:15 AM
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Joined: Oct 2003
Posts: 2,537 PORT ALBERNI , BC., CANADA
superwrench
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Joined: Oct 2003
Posts: 2,537
PORT ALBERNI , BC., CANADA
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This might be a stupid question....but IS there any possibility that the head gaskets are upside down??? The head bolt holes appear they would line up, but maybe the oil/water holes wouldn't. I say this because I had a 5.7 Hemi that I rebuilt and stupidly didn't check the gasket thoroughly when I installed one head. I had water and oil mixed REAL good !!!
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Re: Hemi Help OIL IN COOLANT
[Re: superwrench]
#1702991
12/05/14 11:48 PM
12/05/14 11:48 PM
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Joined: Jan 2003
Posts: 7,489 Minnesota
Hemi_Joel
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Joined: Jan 2003
Posts: 7,489
Minnesota
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Tom, Did it ever get figured out? Enquiring minds what to know.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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