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Dashpot Refurb

Discussion in 'Early Jeep Restoration and Research' started by Chilly, Apr 26, 2019.

  1. Apr 26, 2019
    Chilly

    Chilly Active Member 2019 Sponsor

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    1556320068356-239041533.jpg Anyone know about these? Both move freely, with what I can imagine might be functional resistance. Both have a disintegrated rubber boot. Does that boot matter a lot? Options for refurbishing them? Awful expensive to replace for some reason.
     
  2. Apr 26, 2019
    tarry99

    tarry99 Member Sponsor

    Northern California
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    The boot is the heart of the pod.........no known method.....there crimped together....try to find something than can be adapted...........have you called any of the old Carburetor re-builders?
     
  3. Apr 26, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

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  4. Apr 27, 2019
    45es

    45es Member Sponsor 2019 Sponsor

    Naches, WA
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  5. Apr 27, 2019
    scoutpilot

    scoutpilot Member Sponsor 2019 Sponsor

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    No repair. Must replace.
     
  6. Apr 27, 2019
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor 2019 Sponsor

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    Why do you need it. It is normally used in conjunction with A/C. What function does it serve on your Jeep?
     
  7. Apr 27, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

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    On the R2g carb, the dashpot 'softens' or slows the deceleration of the throttle when you let off the gas. It helps minimize the fuel rich condition that develops which reduces emissions and backfire issues (I think).
     
    Twin2 likes this.
  8. Apr 27, 2019
    mike starck

    mike starck Member Sponsor 2019 Sponsor

    salem,oregon
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    Dashpot was standard equipment on my '71 dauntless. For a vehicle with a solid type throttle linkage between carb and body this little device helps smooth out throttle on ruff terrain. Cable throttle works wonders in that regard also ( LOKAR )
     
    Last edited: Apr 27, 2019
  9. Apr 27, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

    Hills of NH
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    This.
    I've *heard* that it was especially useful with auto transmissions.
     
  10. Apr 29, 2019
    Chilly

    Chilly Active Member 2019 Sponsor

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    Curiously, the dashpot was only used on carbs for manual transmissions. For 1973 anyhow.

    I used to think it was for emissions. And while it may have that effect, they were in use way before people cared about that. Original purpose was to prevent stalling on rapid decel, such is my understanding. Mine will want to do that (or did, its been over a decade..:cry:)
     
  11. Apr 29, 2019
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor 2019 Sponsor

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    I believe this was it's original purpose as well for I did many a tune-ups on cars that had a defective dash-pot but the owners did not want to replace them and the cars performed as well as any other. If you slowly decelerated you would never miss the dash-pot. YMMV
     
  12. Apr 29, 2019
    Chilly

    Chilly Active Member 2019 Sponsor

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    I'm in at $10. Since theyre $35+ I guess I'm out.
     
  13. May 8, 2019
    NCRenII

    NCRenII yellow fever Sponsor

    Far Nor Cal
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    I think many different dashpots would work, find correct length or close, cut to fit, or drill and thread for a round head screw.
     
  14. May 8, 2019
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

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    I'm not convinced that the rubber bellows part is necessary for proper operation. Pretty sure all that does is keep bugs and dirt out of the canister. There should be a diaphragm inside the unit with an orifice that slows compression (or expansion) of the piston. If the action feels right, I'd clean it, paint it, use it as-is.
     
  15. May 8, 2019
    Chilly

    Chilly Active Member 2019 Sponsor

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    I think you are right, Tim. It moves, offers some slight resistance. So many emphatic replies that they were hopeless, and maybe they are, wont know until I have it all hooked up. The stems are pretty wobbly. Maybe the rubber also helped hold it centered.
     

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