Spitting oil through tailpipes.

Discussion in 'Small Block Mopar Engine' started by Ironmike, Aug 24, 2018.

  1. Ironmike

    Ironmike Well-Known Member

    Messages:
    1,368
    Likes Received:
    197
    Joined:
    Oct 11, 2009
    Location:
    Western Pa
    Local Time:
    1:42 AM
    Yep. I'm not burning oil, my plugs look like new. No smoke. O2 sensor dry and clean.

    I noticed a couple weeks ago, a sort of mist on my back bumper and T pipe extensions. Inside the extensions was wet oil. Tonite I noticed the right side actually put a drop on th floor right at the clamp.
    Stick a paper towel in my extensions and it comes out black and oily.

    So this is the engine I built over winter that made 580 HP . Eddy heads had aluminum tubes pressed and tigged in the 2 boltholes that normally supply oil to the head. Oil holes on top of the deck of the block itself are blocked with setscrews. I am now a pushrod oiled top end.

    It runs fantastic and probably has around 1400 miles on it this season, and only a couple passes. Like I said autolite 3924 plugs look great and AFR's are pretty close.

    I decided to bolt on my topless valve cover as a test and I can tell you that my valve seals are submerged under oil during operation. If I had no covers oil would pour over the sides of the heads like Niagra Falls. Not draining the sump, though...

    Thank God I pulled my header evacs and have been running just breathers for 2 weeks.

    I noticed tonite I'm down a quart. Is oil somehow going down my exhaust seals without being burned? Do i need oil restricted pushrods?

    I just can't figure it out this time. I need some help!

    As usual any and all suggestions are GREATLY appreciated.
     
  2. B3422w5

    B3422w5 Well-Known Member

    Messages:
    617
    Likes Received:
    409
    Joined:
    Feb 9, 2017
    Location:
    Portage michigan
    Local Time:
    1:42 AM
    Out of curiosity whats the car weight and what ET/ mph did it run?
     
  3. Max1196

    Max1196 Well-Known Member

    Messages:
    534
    Likes Received:
    284
    Joined:
    May 12, 2016
    Location:
    Swift Current SK
    Local Time:
    12:42 AM
    Mechanical (solid) cam?
     
  4. domdart

    domdart FABO Gold Member FABO Gold Member

    Messages:
    194
    Likes Received:
    45
    Joined:
    Feb 14, 2015
    Location:
    Johnstown, PA
    Local Time:
    1:42 AM
    It is probably the valve seals.
     
    • Like Like x 1
    • B3422w5

      B3422w5 Well-Known Member

      Messages:
      617
      Likes Received:
      409
      Joined:
      Feb 9, 2017
      Location:
      Portage michigan
      Local Time:
      1:42 AM
      Be curious if you have checked it after driving it a while and letting the motor get good and warm, or just after startup you are checking it
       
    • Ironmike

      Ironmike Well-Known Member

      Messages:
      1,368
      Likes Received:
      197
      Joined:
      Oct 11, 2009
      Location:
      Western Pa
      Local Time:
      1:42 AM
      Solid roller. And checked it tonite after a 5 minute ride with 1 pretty good "romp" in there.
      I tell ya this got me really really stumped.

      I'm NOT a track guy so I don't like to even mention numbers but I will tell you the car weighs 3240 me in it and it ran 126.3 MPH at it's best. It's a street car, full interior. This has absolutely nothing to do with my issue.

      I hope it's too much oil up top, but if so, why am I not pulling oil into the intake and actually......burning oil?
       
    • B3422w5

      B3422w5 Well-Known Member

      Messages:
      617
      Likes Received:
      409
      Joined:
      Feb 9, 2017
      Location:
      Portage michigan
      Local Time:
      1:42 AM
      Thanks, just curious how it ran. Impressive!. Followed the build.
      The reason i asked if you checked the exaust after it being hot is i wondered if maybe you were getting some forged piston “ rock” cold and after the temps come up the piston “ swells” and the issue goes away.
      As you checked it hot, the seals would seem to be the likely culprit
       
      • Agree Agree x 1
      • Max1196

        Max1196 Well-Known Member

        Messages:
        534
        Likes Received:
        284
        Joined:
        May 12, 2016
        Location:
        Swift Current SK
        Local Time:
        12:42 AM
        Being "mechanical cam" , and push rod oil feed, what form of oil restriction/ control is in place? Using the SBC procedure as a comparison with the 2 thread in gallery restrictors.
         
      • yellow rose

        yellow rose Doctor of Thinkology.

        Messages:
        15,415
        Likes Received:
        12011
        Joined:
        Jun 19, 2015
        Location:
        Living on the razors edge
        Local Time:
        10:42 PM


        Damn that thing is impressive. The dyno numbers are very close. Turned out nice. I'm glad for you. That was a helluva mess for a while.
         
      • yellow rose

        yellow rose Doctor of Thinkology.

        Messages:
        15,415
        Likes Received:
        12011
        Joined:
        Jun 19, 2015
        Location:
        Living on the razors edge
        Local Time:
        10:42 PM

        I'm not sure Ironmike is running pushrod oiling. IIRC I *THINK* he is using Hughes rockers that are shaft oiled.

        If it's in the pipes but not on the plugs it's probably exhaust seals. Can you post a picture of a spark plug? I'd like to see your tune up.


        Also, you should have someone follow you and not if it smokes on decel or while at a long idle.
         
      • 71DodgeDemon340

        71DodgeDemon340 FABO Gold Member FABO Gold Member

        Messages:
        2,108
        Likes Received:
        403
        Joined:
        Apr 2, 2011
        Location:
        Tennessee
        View My Photos
        Local Time:
        1:42 AM
        You sure its oil and not just condensation lossening soot in the pipes?
         
      • Ironmike

        Ironmike Well-Known Member

        Messages:
        1,368
        Likes Received:
        197
        Joined:
        Oct 11, 2009
        Location:
        Western Pa
        Local Time:
        1:42 AM
        Good to see you chime in, YR! Actually I AM running Hughes rockers, but our buddy Mike over at B3 Racing converted them along with T&D adjusters , to be a true pushrod oil top end. The original tubes my guy pressed in the boltholes were brass and leaked. Had to switch them to Aluminum and tig them in solid.

        So now I'm running bal/ball rods with the standard .080 hole. I damn near ordered the. 029 restricted hole type but the dude at Smith Bros. advised against .

        I'll shoot out to my shop in a minute and get a plug pic for ya. I sure hope it's only something to do with seals or flooding the head.
         
        • Like Like x 1
        • Ironmike

          Ironmike Well-Known Member

          Messages:
          1,368
          Likes Received:
          197
          Joined:
          Oct 11, 2009
          Location:
          Western Pa
          Local Time:
          1:42 AM
          Oh no. It's friggin oil.
           
        • Ironmike

          Ironmike Well-Known Member

          Messages:
          1,368
          Likes Received:
          197
          Joined:
          Oct 11, 2009
          Location:
          Western Pa
          Local Time:
          1:42 AM
          Here ya go, Tim. Gauge shows a little rich at a 45mph cruise, but 13.7 at WOT. 20180824_232120.jpg
           
        • 71DodgeDemon340

          71DodgeDemon340 FABO Gold Member FABO Gold Member

          Messages:
          2,108
          Likes Received:
          403
          Joined:
          Apr 2, 2011
          Location:
          Tennessee
          View My Photos
          Local Time:
          1:42 AM
          I was being optimistic lol

          I hope you can get it sorted out. I mean the exhaust valve seals is really the only logical posibility right?
           
          • Agree Agree x 1
          • B3422w5

            B3422w5 Well-Known Member

            Messages:
            617
            Likes Received:
            409
            Joined:
            Feb 9, 2017
            Location:
            Portage michigan
            Local Time:
            1:42 AM
            How far have you ran the car at one time since the new motor, has it sat quite a bit.
            More i think about it, it runs so good it almost seems unlikely whoever did the heads missed something.
            Almost wonder if it really is sooty/ condensation/carbon and its kinda foolin ya. You havent said anything about seeing smoke out the exhaust, would almost have to if rings or seals
             
            • Like Like x 1
            • 71DodgeDemon340

              71DodgeDemon340 FABO Gold Member FABO Gold Member

              Messages:
              2,108
              Likes Received:
              403
              Joined:
              Apr 2, 2011
              Location:
              Tennessee
              View My Photos
              Local Time:
              1:42 AM
              Unless its the exhaust valve seals, could be that the exhaust gas is carrying the leaking oil through the pipes? Once the exhaust gas exits into the exhaust port is it carrying the oil with it through the pipes? But you would think with the temp of the exhaust that the oil would burn.

              Im curious what is your exhaust setup? What brand of mufflers are you running? Also are you running cats?
               
            • Ironmike

              Ironmike Well-Known Member

              Messages:
              1,368
              Likes Received:
              197
              Joined:
              Oct 11, 2009
              Location:
              Western Pa
              Local Time:
              1:42 AM
              It's friggin amazing ain't it? Stuff like this ONLY happens to me. I've driven it quite a bit this year. We took a 2 hour ride last weekend. It is definitely oil.
              I think at times of high manifold vacuum, oil is running down those seals out the exhaust port. Not hot enough to burn it all or cause smoke but enough to get through the pipes. I don't think they dont do well submerged........I think.
               
            • Ironmike

              Ironmike Well-Known Member

              Messages:
              1,368
              Likes Received:
              197
              Joined:
              Oct 11, 2009
              Location:
              Western Pa
              Local Time:
              1:42 AM
              TTI headers and 3 inch ehaust with Dynomax Ultraflow 2 chamber muffs. No cats. I hate cats.
               
            • 71DodgeDemon340

              71DodgeDemon340 FABO Gold Member FABO Gold Member

              Messages:
              2,108
              Likes Received:
              403
              Joined:
              Apr 2, 2011
              Location:
              Tennessee
              View My Photos
              Local Time:
              1:42 AM
              Are you running a pcv valve?
               
            • 71DodgeDemon340

              71DodgeDemon340 FABO Gold Member FABO Gold Member

              Messages:
              2,108
              Likes Received:
              403
              Joined:
              Apr 2, 2011
              Location:
              Tennessee
              View My Photos
              Local Time:
              1:42 AM
              Ok was just curious as if it could be coming from the mufflers.

              Have you pulled the flange loose at the header connection to see if there is oil there
               
            • Ironmike

              Ironmike Well-Known Member

              Messages:
              1,368
              Likes Received:
              197
              Joined:
              Oct 11, 2009
              Location:
              Western Pa
              Local Time:
              1:42 AM
              No PCV. Was running header evacs until I realized I had a pool of oil up there.
               
            • Ironmike

              Ironmike Well-Known Member

              Messages:
              1,368
              Likes Received:
              197
              Joined:
              Oct 11, 2009
              Location:
              Western Pa
              Local Time:
              1:42 AM
              This is exactly what Mike at B3 Racing thought. But it's been a week now with several very thorough blasts.
               
            • 71DodgeDemon340

              71DodgeDemon340 FABO Gold Member FABO Gold Member

              Messages:
              2,108
              Likes Received:
              403
              Joined:
              Apr 2, 2011
              Location:
              Tennessee
              View My Photos
              Local Time:
              1:42 AM
              Id almost want to take the pipes loose and see if its in the headers, i looked and all they supposedly put in there is fiberglass matting but who knows, possible they but some adhesive in there to hold it in place? And its melting and coming out the exhaust?
               
            • rustycowll69

              rustycowll69 Well-Known Member

              Messages:
              1,584
              Likes Received:
              571
              Joined:
              Feb 19, 2016
              Location:
              Pacific northwest
              Local Time:
              10:42 PM
              maybe (carefully) pull the intake manifold and see if the intake ports are wet with oil. Maybe the intake is not sealing on the bottom of the intake ports and drawing oil vapor into the ports, and burning some, but not all, of the oil.