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dollar bill test

Discussion in 'The Hokey Ass Message Board' started by ykp53, Nov 23, 2010.

  1. ykp53
    Joined: Jun 26, 2006
    Posts: 429

    ykp53
    Member
    from macon ga

    what exactly does placing a dollar bill over the exhaust pipe show? if it occasionaly sucks in is that a bad valve? (exahust) what will happen if you continue to run it? it just started running rought at idle today. and i thought it sounded a litle different. could a bad spark plug or wire cause these symptoms? i had planned on driving it to thanksgiving tommmorow. could i?
     
  2. drs47ford
    Joined: Sep 5, 2010
    Posts: 108

    drs47ford
    Member
    from Western NY

    I can't answer that but I do know that my car is constantly sucking dollar bills out of my wallet.:eek:
     
  3. No greater truth was ever spoken:)...Don.
     
  4. Deuces
    Joined: Nov 3, 2009
    Posts: 19,464

    Deuces
    Member
    from Michigan

    Sounds like someone I know... :( ........... Coming dear! :eek:
     

  5. Mr48chev
    Joined: Dec 28, 2007
    Posts: 28,130

    Mr48chev
    ALLIANCE MEMBER

    I just that was one of those things you stood around and watched your uncles do at family gatherings when they tried to make each other think they knew something about cars. At least that was the case when I was about five.
     
  6. thunderbirdesq
    Joined: Feb 15, 2006
    Posts: 6,929

    thunderbirdesq
    Member

    Me too...:rolleyes:
     
  7. big bad john
    Joined: Aug 11, 2010
    Posts: 4,727

    big bad john
    Member

    .........At a strip joint...you stick one dollar bills down a womans underwear.....why would you want to stick money up your cars exhaust?....Man....you have been out in the garage to long.....
     
  8. LUX BLUE
    Joined: May 23, 2005
    Posts: 4,407

    LUX BLUE
    Alliance Vendor
    from AUSTIN,TX

    I missed you guys. :D

    well, I will step up. it means much about nothing.

    even with true dual exhaust, you are gonna have some suction during the overlap period during exhaust pulses. hell "negative exhaust pressure" is why they sold 10 billion flowmasters. so, in theory, yer gonna have a stinky dollar bill in yer wallet...and not much else. add a balance tube, or an x-pipe, and it would negate the effects all together.

    I think.
     
  9. It means you have money to burn.:eek:

    And you can't drive it to Thanksgiving Tomorrow ~ Thanksgiving is the day after :D
     
  10. With what the dollar is worth these days I doubt the test would show you anything.You would need to use at least a 50.
    Seriously though......... I agree with LUX BLUE.
     
  11. rdemilt
    Joined: Jan 12, 2009
    Posts: 135

    rdemilt
    Member
    from so florida

    [​IMG] [​IMG][​IMG]
     
  12. Von Rigg Fink
    Joined: Jun 11, 2007
    Posts: 13,428

    Von Rigg Fink
    Member
    from Garage

    The only dollar bill test i know of thats car related is where you place one on the dash with a small piece of tape.(usually a bet and the stakes are higher than a dollar)
    and when you yell GO and nail it the passenger tries to get his back out of the seat to get the bill.
    a launch test if you will.

    like...I bet you 20 bucks you cant get that $20 when i yell go!
     
  13. Never2low
    Joined: Jan 14, 2008
    Posts: 1,125

    Never2low
    Member

    Only one I've heard of is the dollar bill check to see if your door is closing against the weather-stripping evenly. Nothing involving the exhaust thou.
    X2 on the negative exhaust pulses.
     
  14. dirt slinger
    Joined: Jan 30, 2010
    Posts: 645

    dirt slinger
    Member

    I always knew my father in-law was full of crap!
     
  15. 61bone
    Joined: Feb 12, 2005
    Posts: 890

    61bone
    Member

    In the days of low comp, 4-6 :1, engines with lazy cams, that would tell you about some engine conditions like leaky valves and miss fires. You could accomplish the same thing by placing your hand over the pipe, which in fact that was a better way because you could feel the pulse, as it were, of the engine. You ol man isn't full of it , just 70 years out of date.
     
  16. 21tat
    Joined: Jun 8, 2006
    Posts: 829

    21tat
    Member

    Interesting.
     
  17. guitar man
    Joined: Sep 13, 2010
    Posts: 210

    guitar man
    Member
    from Tulsa OK

    I used to like to do that one in my old 70 Barracuda. That 440 would suck you right back in the seat. The guys had to pay up in cash. The gals had more flexible payment options :D
     
  18. usmc50lx
    Joined: Oct 3, 2006
    Posts: 711

    usmc50lx
    Member
    from St.Louis

    Damn and here I thought this was gonna be the old hilborn throttle blade trick.....
     
  19. CH3NO2JAY
    Joined: Feb 28, 2008
    Posts: 244

    CH3NO2JAY
    Member
    from Chicago

    If you are curious about the condition of your engine, I would get a vacuum gauge and put it to good use and if you have access to a compression tester & leak tester, do both...
     
    Last edited: Nov 24, 2010
  20. gnichols
    Joined: Mar 6, 2008
    Posts: 10,888

    gnichols
    Member
    from Tampa, FL

    It's Saturday night, and I ain't got nobody...

    and other dumb things you and your friends did to pass the time. Gary
     
  21. Von Rigg Fink
    Joined: Jun 11, 2007
    Posts: 13,428

    Von Rigg Fink
    Member
    from Garage


    Ah ha!..must be a mopar thing than..i did this many times with my 440 RT 68 Charger.:cool:
     
  22. onedge
    Joined: May 25, 2006
    Posts: 1,000

    onedge
    Member

    na....we did it in chevies too.
     
  23. mrforddude
    Joined: May 30, 2010
    Posts: 134

    mrforddude
    Member

    The last thing that sucked any dollars of mine up....I divorced it...

    Best investment yet...in my sanity anyways

    I was always told that if the exhaust sucked a dollar up in it you had at least one burnt valve.

    As far as driving you car...depends on how far your going and how bad its running and if you are planning on doing a complete overhaul soon anyway.

    What type of engine you running/do you need to be using a lead substitute/how many miles... You know the drill...
     
  24. All I remember about the dollar bill is back in the day the police used it to measure windshield height,,not sure if it is fact but defiantly part of folklore. HRP
     
  25. Bigchuck
    Joined: Oct 23, 2007
    Posts: 1,141

    Bigchuck
    Member
    from Austin, TX

    I thought this was going to be related to windshield height. Never heard of the exhaust deal.
     
  26. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    Sounds like something straight out of Gus Wilson's Model Garage.
     
  27. unkledaddy
    Joined: Jul 21, 2006
    Posts: 2,865

    unkledaddy
    Member

    Wasn't there a dollar bill test years ago involving young boys and the size of their tally-whackers? :eek:
     
  28. Mike51Merc
    Joined: Dec 5, 2008
    Posts: 3,854

    Mike51Merc
    Member

    I hold dollar bills over my fuel filler and watch them get sucked in.
     
  29. Butcher's Shop Customs
    Joined: Mar 11, 2010
    Posts: 373

    Butcher's Shop Customs
    Member
    from Paducah KY

    Hope we're using the short side...
     
  30. LMopar69
    Joined: Oct 2, 2010
    Posts: 60

    LMopar69
    Member

    I've seen people do the same thing with the dollar over the exaust. I suppose it would show a bad valve, but, then again, if the valve is that bad, you would know it anyway.
     

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