Firing order question

1968 -1970 Mopars

  1. pearljam724

    pearljam724 Well-Known Member

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    If my #1 piston is sitting at tdc and unlike this picture, my distributor pointer is pointing straight back to the firewall. Is that where I put plug wire #1 ? Then follow the firing order sequence ? I believe so, I just want to make sure because my distributor pointer doesn’t point toward cylinder two , like it does in this picture.

    B94330D5-74E9-467C-90B1-E90662562D28.png
     
  2. Don Frelier

    Don Frelier FBBO Gold Member FBBO Gold Member

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    Sure you are not off by 180 degrees?
    2 crankshaft revolutions / 1 distributor rotation
    You may be on the top of the exhaust stroke, not the compression stroke.
     
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    • Ranger16

      Ranger16 Well-Known Member

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      Correct. The direction the rotor is pointing is irrelevant (assuming that #1 is at TDC on the compression stroke. as long as the #1 plug wire is in that tower.
       
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      • moparedtn

        moparedtn FBBO Gold Member FBBO Gold Member

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        Install the distributor correctly and get things to line up.
        Use the factory service manual - you DO have one of those, right?
         
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        • BB BELLA

          BB BELLA Well-Known Member

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          that's the first time I've heard someone say that and your right. I've never actually looked at the wire routing to see if there may be better options other than pointing at #1 cylinder.
           
        • pearljam724

          pearljam724 Well-Known Member

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          Thank you, guys.
           
        • Shorthorse

          Shorthorse Well-Known Member

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          Here's a useless fact. The "suggested" position of the rotor allows for the uniform production each individual spark plug wire length.
           
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          • pearljam724

            pearljam724 Well-Known Member

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            Useless, it is. Cylinders 1 and 2 are the longest wires. For the pointer to be pointed toward the front as suggested. Is defeating that purpose.
             
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            • BB BELLA

              BB BELLA Well-Known Member

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              now that I look at the position it makes sense, you could technically make the wires shorter if you ran them as the crow flies in the position with #1 tower pointed at #1 cylinder. 1,4,3,2 are clocked to the front!
               
            • HOG RANCH

              HOG RANCH Active Member

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              YOU ARE ON THE RITE TRACK. TO VERIFY YOU ARE AT TDC #1.. BOTH INTAKE AND EXHAUST VALVES SHOULD BE CLOSED
               
            • HOG RANCH

              HOG RANCH Active Member

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            • joemish

              joemish Active Member

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              Pull the number one plug, rotate the engine and when a puff of air pushes on your finger the rotor will be pointed at number one plug on the distributer, then follow the sequence.
               
            • HOG RANCH

              HOG RANCH Active Member

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              that method will work just fine. as long as your engine has compression that you can feel.
              e
               
            • joemish

              joemish Active Member

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              If you can't feel that puff of air time to rebuild.
               
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              • HOG RANCH

                HOG RANCH Active Member

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                could be sum simple stuff, blown head gasket valve not sitting on the seat or broke off, even a hole in the cylinder head from injesting a small amount or foreign debris. HARBOR FREIGHT CAMERA CAN TELL YOU A LOT. PROBABLY FOR THE PRICE OF GASKETS. you make the call. every job is unique.
                 
              • pearljam724

                pearljam724 Well-Known Member

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                I learned a cool trick. It’s not too easy to crank the engine by hand and feel for air at the same time by yourself. Put a ballon over the hole attached to a threaded connection. Tells you exactly when air starts to exit and stop exiting. Or just use a dial gauge. I don’t like listening or feeling for air. It works, but not the easiest method in my opinion. The car has been back on the road for a few days now. Running better than ever. I got the 360 making good power. The temperatures dropping outside in the last few days drastically helps too. Feels like it has 50 more horsepower. Or it might just be my mechanical skills. I don’t know ? Ha ha !
                 
              • HOG RANCH

                HOG RANCH Active Member

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              • HOG RANCH

                HOG RANCH Active Member

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                that sounds like a great idea.
                hogranch
                 
              • pearljam724

                pearljam724 Well-Known Member

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                Thank you, you don’t have to listen or feel. Just watch the ballon. Works great if someone doesn’t have a dial gauge. Listening can be deceiving or difficult to decipher where the sound is coming from. Because air may be escaping from somewhere else other than cylinder one. Just buy a party pack of small balloons from the dollar store. A condum, might be better. You can watch it rise and fall above the valve covers. Will remind you, of the good old days.
                 
                Last edited: Sep 18, 2019
              • joemish

                joemish Active Member

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                You get a pushbutton with 2 alligator clips and connect them to the starter relay. that way you can hold your finger over the plug hole and push the button to crank the engine without the key in ignition. It won't start but will crank and push air at top of stroke in cylinder.
                 
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