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Discussion Topic:
Pulled Head and this is what I found
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CraigTerry |
08-09-2014 @ 9:36 PM
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Member
Posts: 22
Joined: Jun 2014
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Found some antifreeze under my muffler, pulled the head and this is what I found. Interested in your thoughts.
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CraigTerry |
08-09-2014 @ 9:37 PM
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Here's another pic
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CraigTerry |
08-09-2014 @ 9:38 PM
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Here's another pic
This message was edited by CraigTerry on 8-9-14 @ 9:39 PM
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CraigTerry |
08-09-2014 @ 9:39 PM
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Oops here it is
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Norm |
08-10-2014 @ 7:08 AM
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Joined: Oct 2009
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Somehow, water (antifreeze) is getting in that cylinder. The most likely candidate is the gasket, but don't rule out cracks. The water in the combustion space results in less carbon formation. Back in the day people used water injection bottles (set up like a top end oiler) to try for this effect.
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cliftford |
08-10-2014 @ 7:32 AM
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Senior
Posts: 845
Joined: Jan 2014
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I would clean thr block surfaces, pull the studs and magnaflux the block, paying close attention to the area around the valves, just to be sure there are no cracks.
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trjford8 |
08-10-2014 @ 7:37 AM
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Senior
Posts: 4214
Joined: Oct 2009
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Have someone check the head for cracks and also run a straight edge across the head to see if it needs surfacing.
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drkbp |
08-10-2014 @ 6:58 PM
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Craig, You said you had coolant under your muffler. Is that correct? If so, I am not sure I understand why the head is off. If coolant is on the floor: At least through the 1937's, coolant will tend to drip on the starter and then run down on the floor of the garage. If it is on the passenger side it is very likely the pan rail plugs. There are two on each side. They were put in for casting reasons and I don't believe they are a true freeze plug. I have the right rear one weeping a very small amount of coolant. I put some Bahrs leak in it three or four months ago and I haven't seen anything since. I will try to post a picture of a '37 block. I haven't posted a picture before. If that is not what you were after I apologize. Ken in Texas
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CraigTerry |
08-10-2014 @ 8:46 PM
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Ken I pulled the head because I'm under the impression either i have a blown head gasket, cracked head or worse. It appears when looking at the pistons and valves that water has entered the combustion chamber (clean piston heads, white valves). The confusing thing is the spark plugs are black with carbon. The block is a 37 and I'm running straight dual exhaust. The passenger exhaust smokes (white) and spits water pretty bad. Enough water to saturate a paper towel. Once she warms up she'll overheat at idle and slow speeds but temp comes down while at cruising speeds. Any suggestions on cleaning the block water ports?
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TomO |
08-11-2014 @ 5:32 AM
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Posts: 7250
Joined: Oct 2009
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It looks like the head gasket failed. You can see signs of rusty water around the 2 cylinders. I would do as TRJ suggested. I would also check the deck for cracks around the valves. There is no good way to clean the water passages without disassembling the motor, but you can try Evaporuust in the block and then flush it. I would not use it in the radiator, although others have.
Tom
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