shock valving question...

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  • Krooser
    Senior Member
    • Nov 2012
    • 3117

    #1

    shock valving question...

    I bought a box of AFCO and Pro twin tube shocks at a great price... all but one need to be rebuilt/re-valved as all but one are traction shocks.

    One 7" AFCO shock is marked 'fresh' and the valving is 6-3... where would this shock be used on my old 4 bar MB?
    Last edited by Krooser; 12-26-2016, 10:59 PM.
    Member of the Luxemburg Speedway Hall of Fame
    Class of 2019
  • CCHIEF
    Senior Member
    • Jul 2014
    • 399

    #2
    The front or lift bar. How old is old to you??

    Comment

    • Krooser
      Senior Member
      • Nov 2012
      • 3117

      #3
      '96... this was a leaf car modified into a four bar around 2000.

      I'm re-valving all those shocks so I have a few choices for tacky and dry slick. One shock is a twin tube with schrader valve that was used as a left-front rear traction shock if I'm correct.

      CD... I believe you are correct. I have a mid-90's set-up sheet saved on my hard drive and I think that was one of the set-ups.

      I already have a couple oil QA1's redone for the rear... the no-buck late model project keeps crawling along. Now I need to spend a few bucks on the blowed up motor I bought...
      Last edited by Krooser; 12-26-2016, 11:09 PM.
      Member of the Luxemburg Speedway Hall of Fame
      Class of 2019

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      • MasterSbilt_Racer
        Senior Member
        • May 2007
        • 14304

        #4
        That is 6 compression and 3 rebound. Back in the clamp days, a shock like that would sometimes be put on the rf on slick conditions to tighten the car on exit. Today, no one would do that.
        Modern Day Spec Wedge Racing

        Comment

        • Stede Bonnet
          Senior Member
          • Sep 2016
          • 325

          #5
          Originally posted by Krooser View Post
          I bought a box of AFCO and Pro twin tube shocks at a great price... all but one need to be rebuilt/re-valved as all but one are traction shocks.

          One 7" AFCO shock is marked 'fresh' and the valving is 6-3... where would this shock be used on my old 4 bar MB?
          RF when the track dries out to promote weight transfer to LR.
          @ Carrera we recommended a 6/2 (2/6 in Carrera numbers), but 6/3 is close.
          Politically Incorrect.

          Comment

          • Krooser
            Senior Member
            • Nov 2012
            • 3117

            #6
            Thanks Stede...

            Hey MBR... I found a ten year old post from you on the Dirt Racing Forum where you mention running clamped up with a straight bar going to the right side of the chassis that gave you good side bite... I'm going to try that... maybe lifting the LF outta the corners will put a thrill back into my life!

            Last edited by Krooser; 12-27-2016, 09:46 AM.
            Member of the Luxemburg Speedway Hall of Fame
            Class of 2019

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            • MasterSbilt_Racer
              Senior Member
              • May 2007
              • 14304

              #7
              Originally posted by Krooser View Post
              Thanks Stede...

              Hey MBR... I found a ten year old post from you on the Dirt Racing Forum where you mention running clamped up with a straight bar going to the right side of the chassis that gave you good side bite... I'm going to try that... maybe lifting the LF outta the corners will put a thrill back into my life!

              http://www.dirtracingforum.com/showt...tersbilt+racer
              I last used that deal on a Rayburn in 2010 I think. It was fast! It will roll, more like an asphalt car. Make sure your bump settings on the rf are good.
              Modern Day Spec Wedge Racing

              Comment

              • Krooser
                Senior Member
                • Nov 2012
                • 3117

                #8
                Do you guys know of any shock shops that will rebuild the older style AFCO shocks? I have a few of those that are real nice but the local guy who has done my newer AFCO's and QA1's can't get the parts anymore.
                Member of the Luxemburg Speedway Hall of Fame
                Class of 2019

                Comment

                • CCHIEF
                  Senior Member
                  • Jul 2014
                  • 399

                  #9
                  Wow, that's antique not old in DLM evolution! Keep safety in mind going forward. Any low spot where water and condensate may accumulate should be drilled to check wall thickness and for major corrosion. We ran those cars and I too recall using a 6/2! on the RF in the slick for weight transfer. Really concentrate on safety, the money you save is worthless is you no longer can work or be there to provide for your family.
                  Last edited by CCHIEF; 12-27-2016, 04:33 PM.

                  Comment

                  • collateralDamage
                    Senior Member
                    • Jul 2010
                    • 110

                    #10
                    Originally posted by Krooser View Post
                    Do you guys know of any shock shops that will rebuild the older style AFCO shocks? I have a few of those that are real nice but the local guy who has done my newer AFCO's and QA1's can't get the parts anymore.
                    Shorty will!! https://www.facebook.com/Shortys-Sho...1911215560906/

                    Comment

                    • Krooser
                      Senior Member
                      • Nov 2012
                      • 3117

                      #11
                      CChief... thanks. We've already discussed this in a thread I started last year when I bought the car. The only rust damage was in the upper control arm mounts... the welds had a couple holes and water got in and froze... the remainder of the car is OK. I replaced that tubing and had the chance to take a peek inside the main rails when I narrowed the tail for tire clearance. This car sat outside for several months with a for sale sign on it... otherwise it was stored inside since the early 2000's when it was parked... 20 lbs. of pigeon cr*p everywhere seemed to give that story some credibility!

                      CD... I'll give Shorty a call. I appreciate the tip.
                      Member of the Luxemburg Speedway Hall of Fame
                      Class of 2019

                      Comment

                      • powerslide
                        Senior Member
                        • May 2007
                        • 2696

                        #12
                        If shorty doesn't you might try Paul at A-1 machine in Tulsa. Not sure if he has any of the older stuff, know he mainly does afco stuff.

                        Comment

                        • CCHIEF
                          Senior Member
                          • Jul 2014
                          • 399

                          #13
                          I have nothing but your safety in mind. Good luck with your racing!
                          Last edited by CCHIEF; 12-31-2016, 01:01 AM.

                          Comment

                          • Krooser
                            Senior Member
                            • Nov 2012
                            • 3117

                            #14
                            Got a local shock shop to do those Afco's… they have to retrofit new pistons and such but it's doable… thanks to all who gave me a head's up that they still can be used…. it would be a shame to toss good shocks.

                            CCHIEF…. thanks for the concerns… I am always looking at safety, too. have an idea about moding my car to make getting out much easier… since I'm old and decrepit it just might be the answer. I'll post some pix when I get that far.

                            I just wonder how much static I'll get if I post pix of me wearing my new open face helmet with my 'lucky' bandanna covering my mug. Film at 11….
                            Member of the Luxemburg Speedway Hall of Fame
                            Class of 2019

                            Comment

                            • TheJet-09
                              Senior Member
                              • Jul 2013
                              • 1616

                              #15
                              I hope you're kidding about the open face helmet? Are they even legal in dirt racing, or any form for that matter? Just look at what Unzicker and Francis went through by "debris" hitting them in the head/helmet. Even when Earnhardt Sr. wore one, I didn't understand it. Apparently he could feel pressure changes around the car when drafting/etc. at 200 mph. But I always figured we, as humans, can stand a fair amount of damage to our noggins around the forehead, sides, and upper rear portion, but nobody likes getting hit in the face.

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