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I am thinking of dremeling out the flapper in the heat riser.

Discussion in 'The Garage' started by Scott A, Jun 28, 2004.

  1. Scott A

    Scott A 1/2 ton status

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    I am not sure it is working corectly and I don't want any restrictions. I would cut on the green line. Anything wrong with doing that??
    [​IMG]
     
  2. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Nothing wrong but they sell a blank spacer just for this situation.
     
  3. Scott A

    Scott A 1/2 ton status

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    Oh yeah where, Autozone? I wonder how much they get for one?

    Thanks
     
  4. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Check with your local muffler shop. You won't be able to beat the free price of removing the flapper in yours though. /forums/images/graemlins/thumb.gif
     
  5. diesel4me

    diesel4me 1 ton status Premium Member

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    I have cut them out and put bolts in the holes where the shaft was,or brazed them shut--your motor will take longer to warm up without it,may lead to carb icing in the winter if it gets cold where you are.I dont think you will gain much by removing it--when they fail the vacuum canister has a spring that holds the butterfly in the open posistion,doesnt create much back pressure.If you must remove it,you can look for the blank spacer as posted,or you may be able to bolt the pipe on directly to the manifold with shorter studs,but many times the spacer has a flare cast into it for the pipe's flange,and wont work without it. /forums/images/graemlins/crazy.gif
     
  6. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Do you need it for visual inspection ? I didn't, muffler shop removed it when I axed the stock pipes. If you are in Southern Cali ( don't know Monrovia , where is it ? ) you won't notice it gone. /forums/images/graemlins/k5.gif
     
  7. Executioner

    Executioner 1/2 ton status

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    Its called Tampering, and its a Federal offense
    just don't get caught ! /forums/images/graemlins/screwy.gif
     
  8. GMCLegacy

    GMCLegacy 1/2 ton status

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    yeah, that flapper eliminates ALL of the emissions of the engine......hmmm, and bigger tires make you smarter.
     
  9. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    yeah, that flapper eliminates ALL of the emissions of the engine......hmmm, and bigger tires make you smarter.

    [/ QUOTE ]

    Yeah, and it affects your balljoint preload. /forums/images/graemlins/waytogo.gif /forums/images/graemlins/histerical.gif /forums/images/graemlins/histerical.gif
     

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