51 Pan

Discussion in 'General Harley Davidson Topic' started by Bubbyguitars, Mar 7, 2009.

  1. Bubbyguitars

    Bubbyguitars Member

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    I got my '51 Pan out today , Stock Heads with .010 over flattops , S&S Carb and 2 itto 1 open 1 3/4 pipe and 12 volt system with AUTO Advance Dist .
    It starts good and runs great at high RPM . Running down the road it has no throttle responce , when you twist the throttle it falls dead on its face ! It only does this under a load .
    I was told the main jet might be too big ?? I have a 72 Main jet in , and a .295 inter. jet .
    Any Ideas ??
    Bubbyguitars
     
  2. Bubbyguitars

    Bubbyguitars Member

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    I have that but it doesn't help much on the problem because the IGN system and Carb have been changed .
     
  3. Bubbyguitars

    Bubbyguitars Member

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    I just put new hoses and filters on . I didn't have this problem until the shop installed the new S&S . Is there a standard jetting to start with ?
     
  4. STEVE07

    STEVE07 Well-Known Member Staff Member Super Moderators

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    Your still running a slide aren't you? Check for varnishing
     
  5. Bubbyguitars

    Bubbyguitars Member

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    I have a S&S Super E with a Throttle Plate >

    Heres some pics !!
     

    Attached Files:

    Last edited by a moderator: Mar 7, 2009
  6. maine-e-axe

    maine-e-axe Junior Member

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    I would check the timing advance, might be stuck or if it's vacume it might not be hooked up to the carb/intake, just a thought,good luck.
     
  7. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    I think we have some info in the Super E up in downloads (Menu Jump, Miscellaneous). See here:

    S S Carb Manual - HD Talking Downloads Page - Harley Davidson Community

    I don't think they talk about jets, but have not read the whole thing. I would also wonder about an accelerator pump.

    You said you already have this?

    1948-1957 Motorcycle Harley Davidson Panhead Service Manual - HD Talking Downloads Page - Harley Davidson Community

    TQ
     
  8. Bubbyguitars

    Bubbyguitars Member

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    Its got 845 miles since a new build . Its a 74" + .010 Over .
    New S&S Super E
    If I hold the RPM's up through 1st , 2nd and 3rd it screams wide open , If crusing and twist the throttle nothing , shift down and bring the RPM's up I couldn.t ask for a stronger bike .