so what do you guys think

Slant 6 Engines

  1. trudysduster

    trudysduster FABO Gold Member FABO Gold Member

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    Just pulled the head off of the slant 6 in my 76 Dart Sport and I believe the head gasket is blown. What do you think. It has been acting funny since I bought it and hadnt time or place to check it out. I am taking the head to the machine shop Monday to have it checked .

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    • mopar56

      mopar56 Well-Known Member

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      I THINK, you should show us the gasket! But from what I can see on the head only it looks possible!
       
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      • 413

        413 Well-Known Member

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        What is the funny stuff the car is doing? I don’t see anything to tell me the head gasket was or is “blown”.

        what do you see that says it is blown?

        yes show good photos of the gasket
         
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        • mopar56

          mopar56 Well-Known Member

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          Well what I see is the 4th and 5th cyl from the left to the right the chamers are both cleaner ( washed ) more than the others, BUT as I already stated with out the gasket it's impossible to tell.
           
        • trudysduster

          trudysduster FABO Gold Member FABO Gold Member

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          losing ant freeze, sweet smell out the exhaust,loss of power, rough idle, whiteish smoke out the exhaust after the car is at running temp.
           
        • trudysduster

          trudysduster FABO Gold Member FABO Gold Member

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          I cant tell by looking at the gasket that it is blown or not but by the way this car is acting, smell out the exhaust, losing coolant, smoke out the exhaust etc. From what I have always seen is that it is either a blown gasket or a cracked head allowing the coolant to get in the wrong passage. Here are pics of both sides of the gasket. First 2 pics are one side and last 2 pics are of the other side.

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        • MoparMike1974

          MoparMike1974 FABO Gold Member FABO Gold Member

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          If it were getting in the combustion chamber you should be able to see one or two cylinders thats are much cleaner (whiter) than the rest. Yours all look fairly normal except the far right cylinder which appears to be oil fouled.
          You are burning oil in all the cylinders which indicates poor ring seal or bad valve guides/seals.
           
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          • trudysduster

            trudysduster FABO Gold Member FABO Gold Member

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            How would you explain coolant loss through the exhaust, whitish smoke after reaching temp. and sweet smell out the exhaust. That is what has me puzzled.
             
          • Max1196

            Max1196 Well-Known Member

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            ALL of your exhaust ports are "dry", if coolant was being consumed, one or more of those exh. ports should be wet/ discolored/ different. keep looking. I agree with MM74, you need valve guide work/ seals.
             
          • trudysduster

            trudysduster FABO Gold Member FABO Gold Member

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            Yeah, that is going to be done when the head is in the machine shop.
             
          • 65-440

            65-440 Well-Known Member

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            What do the tops of the pistons look like? Head gasket looks fine to me
             
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            • Dana67Dart

              Dana67Dart The parts you don't add don't cause you no trouble FABO Gold Member

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              Might have had a leak on the intake if /6 has water that runs through or next to a runner.

              Or a crack in the head.

              I have had 2 blown head gaskets on the same car, the blown gasket was VERY obvious.

              Also green rad fluid was dripping from the exhost.
               
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              • trudysduster

                trudysduster FABO Gold Member FABO Gold Member

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                I am leaning towards a crack in head, but will know next week.
                 
              • mopar56

                mopar56 Well-Known Member

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                Well I don't see any obvious signs on the gasket either, based on your symptoms I would maybe lean towards a possible crack BUT again no obvious signs of water in the exhaust through the ports did you have to add fluid to the rad at any time?
                 
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                • mopar56

                  mopar56 Well-Known Member

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                  Edit.....I just re-read your earlier post you said " loss of coolant" , guess we will see what the machine shop says.
                   
                • MoparMike1974

                  MoparMike1974 FABO Gold Member FABO Gold Member

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                  When coolant or water enters the combustion chamber it basically steam cleans the cylinder and it will be much cleaner. Typically it will leave a white residue behind. If there was enough to be able to smell it in the exhaust, you should see some sign of it in the combustion chamber.
                   
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                  • AJ/FormS

                    AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s FABO Gold Member

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                    Go to your tailpipe, and swab your finger around it, then taste the residue; Antifreeze will taste sweet.
                     
                  • 413

                    413 Well-Known Member

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                    the gasket doesn’t look blown from here. As stated, Cylinders and ports don’t look like water has been in there. What does the oil look like? Any milkshake in there?
                     
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                    • trudysduster

                      trudysduster FABO Gold Member FABO Gold Member

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                      oil is clean. no milky stuff
                       
                    • inertia

                      inertia Well-Known Member

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                      A J - ! ! . .lol
                       
                    • trudysduster

                      trudysduster FABO Gold Member FABO Gold Member

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                      well, I got a call from the machine shop yesterday telling me the head was ready for pickup. They said no cracks. They said the head actually looked really good. I had it milled a little, seats put in and a valve job. So, either the head was a little wharped allowing coolant to escape some, I dont know. Going back with new gaskets, head reworked, we will see what happens. I dont know
                       
                    • mopar56

                      mopar56 Well-Known Member

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                      Well I would think if yhe head had been a bit warped the machine shop would have seen that and said something, so at least you have covered the bases, head done new gaskets I'd put in a new thermostat and put it back together.
                       
                    • trudysduster

                      trudysduster FABO Gold Member FABO Gold Member

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                      exactly what I am going to do.
                       
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