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Rochester Carb Upgrade - Linkage?

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  • Rochester Carb Upgrade - Linkage?

    Recently updated to the Rochester. Noticed today it appeared the gas pedal seemed to bind and not get full movement. The linkage is now binding and appears to be pulling too much horizontally. I adjusted the arm every which way (shorter and longer) and it still binds to the point it is working the throttle assembly loose.

    What kind of mod do I need to get more vertical pull?

    Thanks in advance!

    Click image for larger version  Name:	IMG_3570.jpeg Views:	0 Size:	222.3 KB ID:	202561
    Attached Files
    Derek
    1969 Series IIa 109 - gone!
    1985 110 - gone!
    1997 Disco 1 - gone!
    1998 P38A - gone!
    2005 LR3 HSE - Sold!
    1973 SIII 88" the latest sickness

  • #2
    Maybe if I can flip #16 that might correct the pull angle?
    Derek
    1969 Series IIa 109 - gone!
    1985 110 - gone!
    1997 Disco 1 - gone!
    1998 P38A - gone!
    2005 LR3 HSE - Sold!
    1973 SIII 88" the latest sickness

    Comment


    • #3
      IIRC In Wildboars IPB, the unnumbered part that #6 bolts to, gets rotated 180deg. It's been 50 years so don't hold me to it.
      gene
      1960 109 w/ 200TDI
      rebuild blog; http://poppageno.blogspot.com/

      You don't see faith healers working in hospitals for the same reason you don't see psychics winning the lottery.

      Comment


      • #4
        #6 bolts to? So the shaft that slides through #18 then?
        Derek
        1969 Series IIa 109 - gone!
        1985 110 - gone!
        1997 Disco 1 - gone!
        1998 P38A - gone!
        2005 LR3 HSE - Sold!
        1973 SIII 88" the latest sickness

        Comment


        • #5
          Originally posted by Wildboar View Post
          #6 bolts to? So the shaft that slides through #18 then?
          Correct, IIRC you have to get the linkage to push up(?) the arm on the Rochester. Anywho I think that's how I did it in 1974, no pictures from back then I was just a 23yo kid trying to get better performance........Just play with it it can be done, should be the main message.
          gene
          1960 109 w/ 200TDI
          rebuild blog; http://poppageno.blogspot.com/

          You don't see faith healers working in hospitals for the same reason you don't see psychics winning the lottery.

          Comment


          • #6
            I’ll be with my 109 tomorrow and can take a picture for you…

            Comment


            • #7
              It has been awhile for me as well… I remember flipping #16 over and drifting the brass bush through to protrude from the other side for reassembly. #16 was then facing down and with the #17 rod adjusted and #18 also flipped it would push up on the throttle arm. I had to reverse the ball on #17 to the opposite side as well and bend #16 in a vice. I hope that didn’t just confuse things… Might help you visualize while your fiddling with it.

              For the Rochester, I also purchased a generic throttle spring from NAPA that extended down to one of the three screws that bolted the exhaust to the header and extended up to the throttle arm. It may have been how I fiddled with the linkage, but I recall my throttle was slow to drop after releasing the pedal - this return spring helped.

              Henry
              www.shearpin.org - Land Rover Lore and Travel Stories

              Comment


              • #8
                Originally posted by loose gravel View Post

                Correct, IIRC you have to get the linkage to push up(?) the arm on the Rochester. Anywho I think that's how I did it in 1974, no pictures from back then I was just a 23yo kid trying to get better performance........Just play with it it can be done, should be the main message.
                Understood. Thanks!
                Derek
                1969 Series IIa 109 - gone!
                1985 110 - gone!
                1997 Disco 1 - gone!
                1998 P38A - gone!
                2005 LR3 HSE - Sold!
                1973 SIII 88" the latest sickness

                Comment


                • #9
                  Originally posted by rejeep View Post
                  I’ll be with my 109 tomorrow and can take a picture for you…
                  Thank you! I would greatly appreciate a photo!
                  Derek
                  1969 Series IIa 109 - gone!
                  1985 110 - gone!
                  1997 Disco 1 - gone!
                  1998 P38A - gone!
                  2005 LR3 HSE - Sold!
                  1973 SIII 88" the latest sickness

                  Comment


                  • #10
                    Originally posted by Shearpin View Post
                    It has been awhile for me as well… I remember flipping #16 over and drifting the brass bush through to protrude from the other side for reassembly. #16 was then facing down and with the #17 rod adjusted and #18 also flipped it would push up on the throttle arm. I had to reverse the ball on #17 to the opposite side as well and bend #16 in a vice. I hope that didn’t just confuse things… Might help you visualize while your fiddling with it.

                    For the Rochester, I also purchased a generic throttle spring from NAPA that extended down to one of the three screws that bolted the exhaust to the header and extended up to the throttle arm. It may have been how I fiddled with the linkage, but I recall my throttle was slow to drop after releasing the pedal - this return spring helped.

                    Henry
                    Thank you Henry! I am beginning to see how swapping some of the existing kit will make it work!
                    Derek
                    1969 Series IIa 109 - gone!
                    1985 110 - gone!
                    1997 Disco 1 - gone!
                    1998 P38A - gone!
                    2005 LR3 HSE - Sold!
                    1973 SIII 88" the latest sickness

                    Comment


                    • #11
                      Originally posted by rejeep View Post
                      I’ll be with my 109 tomorrow and can take a picture for you…
                      Were you able to get any pictures?
                      Derek
                      1969 Series IIa 109 - gone!
                      1985 110 - gone!
                      1997 Disco 1 - gone!
                      1998 P38A - gone!
                      2005 LR3 HSE - Sold!
                      1973 SIII 88" the latest sickness

                      Comment


                      • #12

                        Comment


                        • #13
                          Originally posted by rejeep View Post
                          Sweet! Many thanks! Derek
                          Derek
                          1969 Series IIa 109 - gone!
                          1985 110 - gone!
                          1997 Disco 1 - gone!
                          1998 P38A - gone!
                          2005 LR3 HSE - Sold!
                          1973 SIII 88" the latest sickness

                          Comment

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