Air cleaner riser

Discussion in 'Parts wanted' started by theroundbug, Jan 2, 2021.

  1. theroundbug

    theroundbug Well-Known Member

    Looking for a 1.25" (1 1/14") four barrel air cleaner riser where the choke linkage doesn't bind up against it. For some reason every air cleaner riser I try is so damn tight around the flange and the choke linkage is touching rendering it useless. It doesn't have to be, there is like half an inch of latitude for diameter I don't understand why they have to be so small.
     
  2. John Stevens

    John Stevens Well-Known Member

    Got this one off 71-72 Chevy C/10, fits quadrajet but is 2" tall.
     

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  3. BrunoD

    BrunoD Looking for Fast Eddie

    Let me check what I have,I might be able to help you.Bruno.
     
  4. theroundbug

    theroundbug Well-Known Member

    I've tried so many different risers at this point. They all have this problem. The inside diameter is always 5" when it should be a minimum of 5 1/8". At this point I'll pay someone to make me one out of wood or something or 3d print one the right dimensions. Anyone?

    riser1.jpg
    riser2.jpg
     
  5. newmexguy

    newmexguy Well-Known Member

    I have a pile of risers from various GM vehicles. They all seemed to stick with the Quadrajet? diameter, even if they weren't from a carbed vehicle. PM if interested.
     
    Last edited: Jan 24, 2021
  6. rp455

    rp455 Well-Known Member

    i think the problem is you are usind a Holley
     
  7. theroundbug

    theroundbug Well-Known Member

    Why would that matter? I'm pretty sure most if not all standard 4 barrel carbs have a 5 1/8" flange. The problem is risers consistently fall short of that diameter.
     
  8. 197064buickspec

    197064buickspec 1964 Special Post-455

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  9. theroundbug

    theroundbug Well-Known Member

    I have that one, it was the first one I bought.

    It is not. It had to be stretched to even fit over the entire flange. Once on the choke linkage is blocked because of too tight a tolerance.
     
  10. theroundbug

    theroundbug Well-Known Member

    So I measured the plastic risers, they are indeed 5 1/8. Problem is the choke linkage sticks out further than that. The open element cleaner I have comes with a built-in riser piece that is 5 1/4" wide. That is the diameter riser I'll be needing then, as I have no problems with that cleaner.

    I can't be the first person to run into this. Nobody ever tries to put stock style air cleaners on aftermarket carbs?
     
    Last edited: Jan 25, 2021
  11. newmexguy

    newmexguy Well-Known Member

    Sent you a PM. Have access to some aftermarket Risers in my friends shop. Should be there this weekend. The TBI ones I checked, all were 5 inch inside diameter, as you stated.
     
  12. theroundbug

    theroundbug Well-Known Member

    So I decided to just design a spacer with the correct dimensions and have it printed in polycarbonate. Works perfect

    IMG_5532.jpeg
     
  13. newmexguy

    newmexguy Well-Known Member

    Good that you had the ability to do that. Great. Friend had these, but they were 1” and 2” height respectively. They were closer to 5 1/8” inside diameter.
     

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