No heat in RF tire?

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  • missile07
    Senior Member
    • Aug 2007
    • 680

    #1

    No heat in RF tire?

    After running Saturday nights heat race I noticed the RF tire had very little to no heat in it at all and the RF shock had 2 inches of travel left in it. The track is a low banked 3/8 mile with fairly decent bite. The car was decent in one turn.... a little tight in but horrible off & too tight in and bad off in the other. Running on American racer tires g-60s. Car just isn't getting over on the right side. Here is what I have:

    Chevelle clip GRT

    Springs

    RF 600
    LF 600
    RR 175
    LR 150 (16inch)

    Shocks AFCO non-gas

    RF 3-8
    LF 5-3
    RR 4-4
    LR 9-2

    Pullbar is a one way spring style with a 1200 spring and 20-22 degrees

    Bar Angles

    LRU 46 at full drop
    LRL 30 at full drop

    Cant remember the right side at drop.

    Trailing the right side bars 1/4 inch.

    Bar lengths are
    LRU 16
    LRL 12
    RRU 16 1/4
    RRL 12 1/4

    I am running on the short brackets but can run a 13 1/2 or 15 inch bottom bar on both sides if needed.

    Q/C with j-bar 1 1/4 above pinion & 6 inches higher on the frame.

    Side to side is set to GRT specs.

    57 % rear
    52.5 % left
    49 % cross
    25-30 lbs bite

    All without me and I am approx. 235 lbs

    I dont have the exact scale numbers in front of me but the RF was lower than the LF by about 75 lbs.

    Using adjustable uppers and both have right at 12 degrees at ride height and all non friction balljoints.

    Any help would be appreciated.
    Last edited by missile07; 05-14-2012, 08:36 AM.
  • powerslide
    Senior Member
    • May 2007
    • 2696

    #2
    Exactly the same problem my friend fought w/ his GRT wouldnt get over on RR/couldnt feel the RR. i was suggesting he either lower the RR upper spring mount or move the spring mount inward but he sold it and got a skyrocket so we never got to work on it.

    What fuel cell do you have 32 or 22? Which set of mounting holes? He moved his up and it made entry bad tight.
    I would suggest using the longest RRL bar that will help free it up getting in. Maybe to get more roll lower the j-bar on both ends and then make other changes to free up entry as well.
    Last edited by powerslide; 05-14-2012, 01:25 PM.

    Comment

    • missile07
      Senior Member
      • Aug 2007
      • 680

      #3
      I have the 22 gal fuel cell. It is pretty high and to the left. I have looked for binding issues and cant find anything wrong.

      The j-bar is pretty high in the car so I think I may give that a shot first but I have it where GRT suggest right now.

      Comment

      • washeduptoo
        Senior Member
        • May 2007
        • 1353

        #4
        Where are your rr bars at ride ht? You can have less fuel to reduce rear percent that would help. AR makes a shorty tire if you think stagger would help. Moving the rr tire out would help also. Just some suggestions, good luck.

        Comment

        • dirttrackrocker
          Senior Member
          • Nov 2010
          • 664

          #5
          I'm having the same problem. Won't get over on the RF. I was told to try a heavier LR spring. And I was running a 200, I'm gonna go up to a 250

          Comment

          • JustAddDirt
            Senior Member
            • May 2007
            • 1893

            #6
            grt

            If you need the car to get over on RR, try moving the fuel cell to the right. All that LR weight is hard to transfer to the RR and RF on a flat track.
            Especially if you have 2" of travel left on the RF with a 600# spring.
            The weight needs to transfer to right side, but it is hard to do with all that weight of the fuel cell on the LR.
            You will still have pleanty of left side with the 235# driver
            Do you have a brake floater on the LR, if so put more up angle in it.

            Just a thought
            you will get all kinds of ideas here.
            Last edited by JustAddDirt; 05-14-2012, 02:32 PM.
            I think there should be lifeguards in the genepool.

            Comment

            • JustAddDirt
              Senior Member
              • May 2007
              • 1893

              #7
              lr spring

              Originally posted by dirttrackrocker View Post
              I'm having the same problem. Won't get over on the RF. I was told to try a heavier LR spring. And I was running a 200, I'm gonna go up to a 250
              When you do this you will have little to no preload. This will cause the car to fall down till it his the spring on deceleration making entry erratic.
              I would not recomment going more than a 200.
              I think there should be lifeguards in the genepool.

              Comment

              • dirttrackrocker
                Senior Member
                • Nov 2010
                • 664

                #8
                Using a 16" spring plus I weigh 260.

                Comment

                • missile07
                  Senior Member
                  • Aug 2007
                  • 680

                  #9
                  JustADDDirt,

                  I do have a brake floater on the LR and it is one hole above my LR top bar. I have a 40 lb weight that I was thinkin about putting on above the right rear in front of the fuel cell. High in the car.

                  I will check the bar angles for sure tonight and post them. I am running right at 2 inches of stagger when its tacky and 1 inch -1 1/2 during the feature

                  Comment

                  • powerslide
                    Senior Member
                    • May 2007
                    • 2696

                    #10
                    Originally posted by missile07 View Post
                    I have the 22 gal fuel cell. It is pretty high and to the left. I have looked for binding issues and cant find anything wrong.

                    The j-bar is pretty high in the car so I think I may give that a shot first but I have it where GRT suggest right now.
                    i would try moving the cell down and to the right or maybe one at a time. Then also moving the j-bar down to get some roll back along w/ softening the RF spring. W/ the track being flat like mentioned going to be tough to get it over on the RF. Trying to get both ends working together is my opinion.

                    In refrence to the stiff lr vs the soft lr. Per a very trusted source a stiffer spring will provide more bite/instant traction in the center if off the bars when picking up the gas. Our grt was better w/ a 225 in the lr most of the time. So in short if you cant trail brake i think a stiffer LR is better.

                    Comment

                    • JustAddDirt
                      Senior Member
                      • May 2007
                      • 1893

                      #11
                      floater

                      Originally posted by missile07 View Post
                      JustADDDirt,

                      I do have a brake floater on the LR and it is one hole above my LR top bar. I have a 40 lb weight that I was thinkin about putting on above the right rear in front of the fuel cell. High in the car.

                      I will check the bar angles for sure tonight and post them. I am running right at 2 inches of stagger when its tacky and 1 inch -1 1/2 during the feature
                      I would not go any higher on the floater.
                      bet if you put a gas shock on the LR that probably make it get over on the RR easier.
                      I think there should be lifeguards in the genepool.

                      Comment

                      • missile07
                        Senior Member
                        • Aug 2007
                        • 680

                        #12
                        I have several gas shocks to choose from....

                        Bilstein 8 comp-2reb BSB
                        Bilstein 5 comp-3reb
                        Bilstein 9 comp-2reb TSM
                        AFCO 9-2 200lb psi

                        Would it be helpful to have both left side shocks gas?

                        Comment

                        • JustAddDirt
                          Senior Member
                          • May 2007
                          • 1893

                          #13
                          shocks

                          since I am soponsored by Bilstein I sould say go with one of those.
                          I would go with either the 8/2 or 9/2
                          gas them to 200 if you can, no big deal if you cannot.
                          this should also help traction a bit as well.
                          I think there should be lifeguards in the genepool.

                          Comment

                          • missile07
                            Senior Member
                            • Aug 2007
                            • 680

                            #14
                            ok thanks. I will have to look at them to see the psi on each. Should I leave the oil shocks on the other 3 corners?

                            Comment

                            • JustAddDirt
                              Senior Member
                              • May 2007
                              • 1893

                              #15
                              shocks

                              I would leave the other 3 a twin tube, and give it a try.
                              I think there should be lifeguards in the genepool.

                              Comment

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