tight on entry

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  • washeduptoo
    Senior Member
    • May 2007
    • 1353

    #1

    tight on entry

    Last week we went to a different track and with a different driver. Car was tight on entry and tight in the middle on the throttle. Going back to same track this week with the regular driver, going to change offset on rr from a 4 to a 3, hate to change much do to different driver. Front springs are 600 lf and 550rf and still have about 1in of shock rod left showing. Thanks
  • Dirtrunner35
    Senior Member
    • May 2010
    • 632

    #2
    track real tacky ?

    Comment

    • JustAddDirt
      Senior Member
      • May 2007
      • 1893

      #3
      raise j bar on rear end. that will loosen entry and middle
      I think there should be lifeguards in the genepool.

      Comment

      • powerslide
        Senior Member
        • May 2007
        • 2696

        #4
        What else if the J-bar is already at the top on the pinion side?

        Comment

        • HEAVY DUTY
          Senior Member
          • Jun 2007
          • 796

          #5
          If the j bar is all the way up, there is probably something else going on. It isn't normal for the j bar to be that high, which is what would make me think it was something else. Make sure it isn't a brake problem first. The compression being too soft on the LR shock is the main thing that causes a 4 bar car to be too tight on entry. ( new driver not trail braking or arcing in the same as the other driver letting the LR drop on entry)

          Comment

          • powerslide
            Senior Member
            • May 2007
            • 2696

            #6
            I was just throwing that out to see what i got for answers, i know nothing of the OP car or setup. Even w/ the quickchange you guys are never at the top on the pinion?

            Comment

            • Racer96m
              Senior Member
              • Feb 2008
              • 425

              #7
              Originally posted by powerslide View Post
              I was just throwing that out to see what i got for answers, i know nothing of the OP car or setup. Even w/ the quickchange you guys are never at the top on the pinion?
              Nope, never.

              Dave
              2012 UMP Stock Car National Champions.
              2013 UMP Modified Rookie of the Year
              2014 Kankakee Speedway UMP Modified Champion
              2016 Fairbury American Legion Speedway UMP Modified Champion
              2016 Kankakee Speedway UMP Modified Champion
              2016 UMP Modified, Northen IL Regional Champion
              2018 UMP Modified, #2 National Points Standings
              Like us on Facebook, https://www.facebook.com/McKinneyMotorsports

              Comment

              • powerslide
                Senior Member
                • May 2007
                • 2696

                #8
                I started with mine at the top on my q/c. It was about a inch above the pinion i believe(i will double check) which is in the bottom hole or pretty close on a 9in. Car was still usually tight on entry on hammer down bull ring. What are you guys doing to free the car up to compensate for the low panhard location? How much trail? front spring split? You guys run UMP tires so that may play into the balancing act as well.

                Comment

                • jsf74
                  Senior Member
                  • Aug 2011
                  • 544

                  #9
                  Dont lightning mods have the panhard bar mounted all the way up on the pinion mount?

                  Comment

                  • z40chief
                    Member
                    • May 2007
                    • 90

                    #10
                    Originally posted by jsf74 View Post
                    Dont lightning mods have the panhard bar mounted all the way up on the pinion mount?
                    Heavy Duty should know since he builds Lightnings.

                    Comment

                    • JustAddDirt
                      Senior Member
                      • May 2007
                      • 1893

                      #11
                      jsf74

                      straight panhard bar mounts to top of pinion plate.
                      j bar is 1" above pinion centerline. Per Lightning set up sheet.
                      I think there should be lifeguards in the genepool.

                      Comment

                      • washeduptoo
                        Senior Member
                        • May 2007
                        • 1353

                        #12
                        Sorry I haven't answered back sooner as I had a brother-in-law having surgery yesterday and when I got home, I couldn't get on 4m. We are at center of pinion on qc and if the offset doesn't work, that would be a good adjustment. Thanks for the help.

                        Comment

                        • HEAVY DUTY
                          Senior Member
                          • Jun 2007
                          • 796

                          #13
                          Using the term" top" on the pinion plate differs with which pinion plate you have. Some are 3" above pinion, while others are 1" above pinion. It is common for a J bar to be between 1 1/2" above to slightly below on a mod. A straight bar on the left side of the pinion is usually higher than the J bar would be.

                          Comment

                          • washeduptoo
                            Senior Member
                            • May 2007
                            • 1353

                            #14
                            What about moving the lrt bar up past the 45degree angle to add more rear steer, lr is chained at 45 degrees right now. What about swapping front springs or putting a 600 in rf? What do y'all think of these adjustments? Thanks

                            Comment

                            • Flyin Iowan
                              Senior Member
                              • Jul 2007
                              • 558

                              #15
                              What about more stagger?
                              Chris Zogg

                              Comment

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