No oil through passenger rocker arms

Engine, Trans & Driveline

  1. Daves69

    Daves69 Well-Known Member

    Messages:
    1,588
    Likes Received:
    1385
    Joined:
    Jan 24, 2014
    Location:
    ChiWest
    Local Time:
    6:50 PM
    The oil port in the block is a lot smaller than the bolt hole. You need a small diameter wire that you won't break off and become a restriction.
    The small hole in the block you are trying to hit is the top one. The corresponding hole in the head intersects the rocker shaft bolt hole. The hole in the rocker shaft is opened up for oil to pass through......
    upload_2020-1-14_8-57-44.png

    upload_2020-1-14_10-17-27.png


    If the cam bearing is spinning with the cam, would it not still oil both sides?
    upload_2020-1-14_8-53-50.png
     
    • Like Like x 4
    • Thanks! Thanks! x 2
    • khryslerkid

      khryslerkid FBBO Gold Member FBBO Gold Member

      Messages:
      19,810
      Likes Received:
      28685
      Joined:
      Mar 10, 2010
      Location:
      Hanover, Pennslyvania
      Local Time:
      7:50 PM
      I guess it would if the bearing is stuck to the cam.

      Hey, thanks for the pictures and diagrams:thumbsup:
       
      • Agree Agree x 2
      • Yeahrightgreer

        Yeahrightgreer Well-Known Member

        Messages:
        54
        Likes Received:
        45
        Joined:
        Jan 12, 2020
        Location:
        Camp Lejeune, NC
        Local Time:
        7:50 PM
        Hey mate! Definitely seems like a different pace from the big C-Bodies! Hope to soak up all the wisdom over here
         
        • Like Like x 1
        • oldbee

          oldbee FBBO Gold Member FBBO Gold Member

          Messages:
          8,129
          Likes Received:
          7925
          Joined:
          Oct 15, 2011
          Location:
          NE Ohio
          Local Time:
          7:50 PM
          From ur address it sounds like ur wrenching in a parking lot?!! Ooh-rah.
           
          • Like Like x 3
          • Yeahrightgreer

            Yeahrightgreer Well-Known Member

            Messages:
            54
            Likes Received:
            45
            Joined:
            Jan 12, 2020
            Location:
            Camp Lejeune, NC
            Local Time:
            7:50 PM
            The best place to wrench! A full tool box and you work by the daylight and elements. Semper!
             
            Last edited: Jan 14, 2020
            • Like Like x 1
            • Yeahrightgreer

              Yeahrightgreer Well-Known Member

              Messages:
              54
              Likes Received:
              45
              Joined:
              Jan 12, 2020
              Location:
              Camp Lejeune, NC
              Local Time:
              7:50 PM
              Thanks for the diagram Dave. Didn’t realize the port was above and offset from the bolt holt. I ended up feeding a wire down the port and there doesn’t seem to be any obstructions like grease, debris, etc. Just some old oil that’s still in good shape. Tried turning the crank slowly to see if itd snag or contact the wire but nothing.

              Really was hoping I wouldn’t have to break this motor down but glad I decided to listen to my better judgement and pull the valve covers instead of listening to my friends (GM folk) rationality of just “sending it”.

              Thanks for everything so far gents
               
              • Like Like x 1
              • wyrmrider

                wyrmrider Well-Known Member

                Messages:
                2,166
                Likes Received:
                844
                Joined:
                Aug 26, 2014
                Location:
                los angeles
                Local Time:
                4:50 PM
                I'd blow it out with brake or carb cleaner (eye protection) then put a bore scope down
                it's unfortunate that you can't feel the cam turning
                 
              • miller

                miller Well-Known Member

                Messages:
                4,083
                Likes Received:
                2005
                Joined:
                Jan 5, 2014
                Location:
                Tom Bean,Texas
                Local Time:
                6:50 PM
                It's a PITA!
                Too bad it's coming out like that. (Could be something very simple.)
                Unfortunately, ya gotta do what ya gotta do. Might help, understanding what your looking at. On the head, the #4 rocker stand, that the rocker shaft bolts to. Yeah, beside the bolt hole, is the oiling port. That port goes through the head, through the head gasket, then to the block ports.
                If you were to pull the intake manifold, you would see those two oil port 'bosses', in line with the #4 cam bearing. It's a straight shot oil port, through that section of the block. (I don't know if it would be worth pulling the head, to get to things. Probably not.) But, then again...

                Can't say if the cam bearing spun, or just not installed right. That takes an eye on it. Yeah, cams can be too tight, and turn those bearings.

                You say your wire won't go in very far...how far? To the block deck surface?
                 
              • moparedtn

                moparedtn Ed on the Ridge FBBO Gold Member

                Messages:
                5,845
                Likes Received:
                8381
                Joined:
                May 14, 2011
                Location:
                On the Ridge, TN
                Local Time:
                7:50 PM
                Pretty awesome stuff, right there. Thanks for taking the time to generate these!
                 
                • Agree Agree x 2
                • Thanks! Thanks! x 1
                • 33 IMP

                  33 IMP FBBO Gold Member FBBO Gold Member

                  Messages:
                  2,764
                  Likes Received:
                  3417
                  Joined:
                  Dec 21, 2017
                  Location:
                  taxifornia,soon 2b Arizona.
                  Local Time:
                  4:50 PM
                  If this is a fresh rebuild, i would bet that the builder( apologies if that was you) put the number four cam bearing in wrong. My guess is that one hole was lined up with the oil passage, not both. Chevy guy put it together?
                   
                • Daves69

                  Daves69 Well-Known Member

                  Messages:
                  1,588
                  Likes Received:
                  1385
                  Joined:
                  Jan 24, 2014
                  Location:
                  ChiWest
                  Local Time:
                  6:50 PM
                  Pitchers always help me talk
                  upload_2020-1-15_8-46-49.png

                  Oops, I mean pictures!
                   
                  • Like Like x 4
                  • Agree Agree x 2
                  • Yeahrightgreer

                    Yeahrightgreer Well-Known Member

                    Messages:
                    54
                    Likes Received:
                    45
                    Joined:
                    Jan 12, 2020
                    Location:
                    Camp Lejeune, NC
                    Local Time:
                    7:50 PM
                    Well took the car to a buddies shop... We are pulling the engine this weekend and taking a look. A friend of his has a machine shop. I suppose I might start another thread.

                    I know on some type of engines that if a cam bearing is spun, the block is basically trashed. However, that does not apply to these old RB engines does it? I was pretty sure that I’ve heard you can get cam bearings installed and some machining work done from anywhere from $500 to $1000 depending on what is needed

                    CDFC1897-8C9B-48E6-9325-BB3DAB5003D7.jpeg 19C5AD35-94FF-4A6C-92FB-E0B18F101511.jpeg
                     
                  • 1968rt

                    1968rt Well-Known Member

                    Messages:
                    127
                    Likes Received:
                    119
                    Joined:
                    Jul 28, 2010
                    Location:
                    New York
                    Local Time:
                    7:50 PM
                    block will be fine, the mains oil first then the cam and heads
                     
                    • Thanks! Thanks! x 1
                    • 69L48Z27

                      69L48Z27 Well-Known Member

                      Messages:
                      2,577
                      Likes Received:
                      2627
                      Joined:
                      Nov 19, 2015
                      Location:
                      York, Pa
                      Local Time:
                      7:50 PM
                      You’ll need to figure out why it spun. Sometimes these cams are tight and the bearings need cut. If you install a new cam and can’t turn it by hand easily you’ll need to fix that.

                      I’m fortunate with machine work here. Just had a 440 and heads ‘done’. We honed and installed new cam bearings. He took the heads apart, relapped the valves, new stem seals, and checked all springs. $140.

                      The most was a 360, cooked, bored over, cam bearings. Heads cooked, valves and seats cut, all new guides and I think that was maybe $600.
                       
                    1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
                      By continuing to use this site, you are consenting to our use of cookies.