Top End Not Getting Oil (360 LA)

Small Block Mopar Engine

  1. Peter J Boncella

    Peter J Boncella Active Member

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    I jumped my starter relay to spin the engine over with the starter to prime my oil systems, and after a while I didn't see any oil getting to my rockers. I know I have oil pressure because I forgot to put in the sensor and got oil all over my floor. Do I just need to keep spinning it over some more? what are some common issues that I should check for? thanks
     
  2. Bad Sport

    Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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    Did you just put this together? If so, do you have the rocker shafts oriented correctly?
     
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    • Peter J Boncella

      Peter J Boncella Active Member

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      I did just put it together What do you mean oriented correctly? the oil holes on the shaft are pointed down. Is there like a left and right or something? This is the first motor i've built so im a newbie
       
    • Jadaharabi

      Jadaharabi FABO Gold Member FABO Gold Member

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      The notch on the end of the "older" la rocker arm shaft go to the left and down as you are standing at the side of the engine.
       
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      • 67Dart273

        67Dart273 FABO Gold Member FABO Gold Member

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        In addition to the above, the oil to the top end ONLY happens as the cam briefly aligns it's oil holes with the passages in the block coming up to the heads. if you did not crank it enough, the oil won't have time to get there. Easiest way is to prime pump with a drill, and slowly turn engine with wrench until you get oil holes aligned/ oil up top. SOMEWHERE on this board, folks have published rotational degrees of crank at which this happens

        If you can NOT prime pump with a drill and shaft, I would REMOVE the rockers and plugs so that you are not impacting the lifters with high pressure springs and crank on the starter until you get oil up top
         
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        • Bad Sport

          Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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          There is a notch on one end of each shaft. That notch needs to be forward toward core support and facing down on the driver side. The notch needs to be in the rear toward the firewall and facing down on the passenger side.

          Check there and report back.
           
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          • Jadaharabi

            Jadaharabi FABO Gold Member FABO Gold Member

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            shaftheasd shot.jpg

            This is a shaft that uses the oiling holes for the adjustable rocker arms. However the hydraulic rocker arm shaft has the same notch in it that you see in this picture. On the driver side it is at the front and down and on the passenger side is at the rearend and down.
             
            Last edited: Nov 15, 2020
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            • beanhead

              beanhead Well-Known Member

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              67Dart's post is right on.
              If your good on all that, and STILL aren't getting oil up there, the cam bearing may not have been aligned properly:eek:.
              If you're at least getting pressure in the system, that's good because (I think) it means there wasn't a plug that got missed somewhere.
               
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              • Cal Tonsley

                Cal Tonsley Well-Known Member

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                This might help regarding cam position for top end oil flow
                 
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                • pittsburghracer

                  pittsburghracer FABO Gold Member FABO Gold Member

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                  So you are priming a new engine by turning it over with the starter instead of with a drill and a priming shaft. Ohhhh Boy.
                   
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                  • Rapid Robert

                    Rapid Robert Well-Known Member

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                    90 deg BTDC #1 compression the pass head oils. 20 ATDC #6 compression the dr head oils
                     
                  • Peter J Boncella

                    Peter J Boncella Active Member

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                    Yeah... I learned that is a bad idea yesterday, hoefully nothing is screwed up.
                     
                  • pishta

                    pishta I know I'm right....

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                    No nothing is screwed up if you used assembly lube. You just want pressurized oil to the bearings ASAP as well as the camshaft but that assembly lube will keep everything gliding for a number of dry rotations. It aint going anywhere....you can check cam bearing alignment with a bamboo skewer down the oiling pedestal of the head: put it in there until it hits something and then slowly turn turn the crank. Eventually (up to 2 turns) the camshaft oil port will align with the bearing hole for timed oil and you'll feel the skewer catch the cam hole. Skewer wont scratch the camshaft.
                     
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                    • pittsburghracer

                      pittsburghracer FABO Gold Member FABO Gold Member

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                      Hey we are all here to share and learn. Lots of good guys on this website. Goodluck
                       
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                      • 3406pk

                        3406pk Well-Known Member

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                        Turn the crank by socket & handle so don't shear skewer off. If must use starter, use remote starter button to have good control.
                         
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                        • RustyRatRod

                          RustyRatRod Lemmie see your b00bs. FABO Gold Member

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                          That's what it appears and I agree, that's a terrible thing to do.

                          To the OP, you really need to get the Mopar priming tool and prime the engine using that.
                           
                        • RustyRatRod

                          RustyRatRod Lemmie see your b00bs. FABO Gold Member

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                          I think it'll be fine as long as you used a lot of assembly lube.
                           
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                          • crackedback

                            crackedback FABO Gold Member FABO Gold Member

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                            If he has a magnum camshaft core in an LA... not going to get anything up top.
                             
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                            • 67Dart273

                              67Dart273 FABO Gold Member FABO Gold Member

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                              Aw Geez..........iz' alwayz sumthun'
                               
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