massive reconfiguration time again.

Mopar Racers Forum

  1. 318willrun

    318willrun Stomper 4x4... we kept energizer in business

    Messages:
    9,967
    Likes Received:
    9021
    Joined:
    Sep 13, 2013
    Location:
    I'm here
    Local Time:
    4:14 PM
    Well, if it's a still day that would work fine. But if you have a nice tail wind, you'd have to turn the blockage to the back of the air cleaner. But then, if you went around a corner and now a 20 mph gust was hitting the passenger side..... :BangHead::BangHead::BangHead:
     
    • Thanks! Thanks! x 1
    • Jadaharabi

      Jadaharabi FABO Gold Member FABO Gold Member

      Messages:
      5,689
      Likes Received:
      5624
      Joined:
      Jan 8, 2016
      Location:
      Peoria, Illinois
      Local Time:
      4:14 PM
      Wouldn't that be "bowls" by holley.
       
      • Thanks! Thanks! x 1
      • j par

        j par Well-hung Member

        Messages:
        15,681
        Likes Received:
        7541
        Joined:
        Jul 2, 2014
        Location:
        Portland Oregon
        Local Time:
        2:14 PM
        I'm talking 65-70 on the freeway for 45 minutes steady...
         
      • Jadaharabi

        Jadaharabi FABO Gold Member FABO Gold Member

        Messages:
        5,689
        Likes Received:
        5624
        Joined:
        Jan 8, 2016
        Location:
        Peoria, Illinois
        Local Time:
        4:14 PM
        I wind will be shifting directions continuously as you are driving down the road. The road swings to the left and the road swings to the right the airflow over your carburetors will be shifting from left to right.
        The engine itself will be only drawing air through the carburetors that it wants. If you have 2000 CFM carburetors on top of that tunnel ram it will not matter if the engine demand is only 150 CFM.
        In other words you're blocking of one side of your air cleaner is not going to do you any good.
         
        • Like Like x 1
        • Agree Agree x 1
        • Cope

          Cope Fusing with fire

          Messages:
          3,584
          Likes Received:
          4026
          Joined:
          Oct 20, 2009
          Location:
          San Jose, Ca.
          Local Time:
          4:14 PM
          I dont know that i agree with that.

          The ram air affect could easly push more air past the carb.?

          I have a cut out under my scoop just for that reason. It allows the air to exit the scoop vs being forced into the engine.

          I have no idea if this is correct but it is what i have.

          Have you ever ridden a road bike? The wind is always in your face. You think, ok im gonna turn this corner and not be in a head wind but nope.. its not the wind so much as its you moving...
           
          • Agree Agree x 1
          • Jadaharabi

            Jadaharabi FABO Gold Member FABO Gold Member

            Messages:
            5,689
            Likes Received:
            5624
            Joined:
            Jan 8, 2016
            Location:
            Peoria, Illinois
            Local Time:
            4:14 PM
            If you have ram air affecting those carburetors you're going to be letting off the throttle pedal to compensate for it. aren't you?
            At what point does your cutout start working. or is it a manual control?
             
            Last edited: Jul 17, 2019
          • j par

            j par Well-hung Member

            Messages:
            15,681
            Likes Received:
            7541
            Joined:
            Jul 2, 2014
            Location:
            Portland Oregon
            Local Time:
            2:14 PM
            Cool, I was just thinking you know kind of when you put your hand out the window at 70 miles an hour or riding your motorcycle on the freeway with no glasses at 70 mph.
            It was a theory....
            Just trying to think what would have caused that condition during that driving condition on that portion of the motor?
             
          • Cudafever

            Cudafever Well-Known Member

            Messages:
            3,101
            Likes Received:
            631
            Joined:
            Sep 27, 2009
            Local Time:
            3:14 PM
            Is it possible that you need to jet the carb different?
            Try swapping positions of the carbs. if the learner plugs follow the carb........you may have to jet them carbs differently.
             
            • Like Like x 1
            • j par

              j par Well-hung Member

              Messages:
              15,681
              Likes Received:
              7541
              Joined:
              Jul 2, 2014
              Location:
              Portland Oregon
              Local Time:
              2:14 PM
              Damn it man that's a lot of work!
               
            • Cope

              Cope Fusing with fire

              Messages:
              3,584
              Likes Received:
              4026
              Joined:
              Oct 20, 2009
              Location:
              San Jose, Ca.
              Local Time:
              4:14 PM
              Like i said, i dont know if its right or not.

              Lets go with the fact that carburetors work on vacuum. We are not talking blow through carbs.
              So if my blades are open X amount they want to be drawing X amount of air.
              Now if im doing 70 at cruse with the blades mostly shut and a high pressure area above my carbs. Is that high pressure area more than the vacuum of the engine?

              What happens then?
               
              • Agree Agree x 1
              • Cudafever

                Cudafever Well-Known Member

                Messages:
                3,101
                Likes Received:
                631
                Joined:
                Sep 27, 2009
                Local Time:
                3:14 PM
                linkage is different between the two of them also?
                 
                • Like Like x 1
                • j par

                  j par Well-hung Member

                  Messages:
                  15,681
                  Likes Received:
                  7541
                  Joined:
                  Jul 2, 2014
                  Location:
                  Portland Oregon
                  Local Time:
                  2:14 PM
                  No it's one to one...
                   
                • Cudafever

                  Cudafever Well-Known Member

                  Messages:
                  3,101
                  Likes Received:
                  631
                  Joined:
                  Sep 27, 2009
                  Local Time:
                  3:14 PM
                  you could us that same scenario with sea level air pushing on the butterfly's and not so much pushing on them at altitude.

                  I think to answer you question. at 70 (ram air) there is more pressure on the top of the carb. pushing more air and fuel into the eng. throttle blade closes slightly to keep the same speed.
                   
                  • Agree Agree x 1
                  • j par

                    j par Well-hung Member

                    Messages:
                    15,681
                    Likes Received:
                    7541
                    Joined:
                    Jul 2, 2014
                    Location:
                    Portland Oregon
                    Local Time:
                    2:14 PM
                    One two and three had the whitest tips and four had a little bit of color on it. While the back plugs look okay.
                     
                  • j par

                    j par Well-hung Member

                    Messages:
                    15,681
                    Likes Received:
                    7541
                    Joined:
                    Jul 2, 2014
                    Location:
                    Portland Oregon
                    Local Time:
                    2:14 PM
                    I think I'm just going to try and driving around town a little bit and see what happens.
                     
                  • Cope

                    Cope Fusing with fire

                    Messages:
                    3,584
                    Likes Received:
                    4026
                    Joined:
                    Oct 20, 2009
                    Location:
                    San Jose, Ca.
                    Local Time:
                    4:14 PM
                    But the blades are not wide open. The carb dont know it needs to be dumping fule to compensate for the extra air?

                    Or dose it?

                    I dont know if the signal works with the blades closed. Say we still in the transfer slot?

                    This is out side of my carb tuning area.
                     
                    • Like Like x 1
                    • Cudafever

                      Cudafever Well-Known Member

                      Messages:
                      3,101
                      Likes Received:
                      631
                      Joined:
                      Sep 27, 2009
                      Local Time:
                      3:14 PM
                      Were is the competition carb at.
                       
                      • Like Like x 1
                      • Cope

                        Cope Fusing with fire

                        Messages:
                        3,584
                        Likes Received:
                        4026
                        Joined:
                        Oct 20, 2009
                        Location:
                        San Jose, Ca.
                        Local Time:
                        4:14 PM
                        Easy way to test is to remove the air filters/ hat and drive it on the HWY.
                         
                        • Like Like x 1
                        • j par

                          j par Well-hung Member

                          Messages:
                          15,681
                          Likes Received:
                          7541
                          Joined:
                          Jul 2, 2014
                          Location:
                          Portland Oregon
                          Local Time:
                          2:14 PM
                          Back
                           
                        • Cudafever

                          Cudafever Well-Known Member

                          Messages:
                          3,101
                          Likes Received:
                          631
                          Joined:
                          Sep 27, 2009
                          Local Time:
                          3:14 PM
                          more air rushing threw the idle transfer slots causing more fuel to be pulled threw. just like if you have open the throttle.
                           
                          • Like Like x 1
                          • Cope

                            Cope Fusing with fire

                            Messages:
                            3,584
                            Likes Received:
                            4026
                            Joined:
                            Oct 20, 2009
                            Location:
                            San Jose, Ca.
                            Local Time:
                            4:14 PM
                            I just dont tune for cruze. My car goes from idle to wide open. It never is in ram air affect with out being wide open.

                            But this is something i have thought about quite a bit.
                             
                            • Like Like x 1
                            • Cudafever

                              Cudafever Well-Known Member

                              Messages:
                              3,101
                              Likes Received:
                              631
                              Joined:
                              Sep 27, 2009
                              Local Time:
                              3:14 PM
                              Makes sence to me.
                              competition is calibrated to work with bigger cams then stock. stock one is not.
                              Maybe just go up a couple of number on the front carb and see what happens (a couple number on the primary sided)
                               
                              • Like Like x 1
                              • Cudafever

                                Cudafever Well-Known Member

                                Messages:
                                3,101
                                Likes Received:
                                631
                                Joined:
                                Sep 27, 2009
                                Local Time:
                                3:14 PM
                                The cruise circuit hurts my brain as well. idle and full throttle is all a drag racer needs:steering:
                                 
                                • Agree Agree x 1
                                • j par

                                  j par Well-hung Member

                                  Messages:
                                  15,681
                                  Likes Received:
                                  7541
                                  Joined:
                                  Jul 2, 2014
                                  Location:
                                  Portland Oregon
                                  Local Time:
                                  2:14 PM
                                  It's probably why I've never experienced this condition because I've never really drove the car like this....
                                   
                                  • Like Like x 1
                                  • j par

                                    j par Well-hung Member

                                    Messages:
                                    15,681
                                    Likes Received:
                                    7541
                                    Joined:
                                    Jul 2, 2014
                                    Location:
                                    Portland Oregon
                                    Local Time:
                                    2:14 PM
                                    Here's one you can Holley guys haven't thrown in... Changing the metering Rod Springs??
                                     
                                  1. This site uses cookies to help personalize 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.