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Lean spot in transition

Discussion in 'Carburetor + Boost Tech Questions' started by 302andsome, Mar 14, 2010.

  1. 302andsome

    Joined:
    Apr 6, 2007
    When I go from cruise to WOT I am still getting a bad hesitation as the engine goes very lean. After about a second or so it hits hard and a/f goes to 10.5 and it's fine. I put a 50cc and big cam on the rear going through a 37 shooter which seemed to help but still a bad hesitation. Is this just my PV not opening up early enough?
     
    302andsome, Mar 14, 2010
    #1

  2. Turbod_86_stang

    Joined:
    Sep 13, 2004
    Wish I could help. This seems to be the biggest issue with the average tuners on the street. I had the same issues last year before I scrapped my old setup. How much timing?
     
    Turbod_86_stang, Mar 14, 2010
    #2

  3. 302andsome

    Joined:
    Apr 6, 2007
    Locked at 30 with 1deg/psi. running 10lbs.
     
    302andsome, Mar 14, 2010
    #3

  4. domn8rx

    Joined:
    Mar 1, 2006
    We always ran 36-40* locked, 21* at 15psi. More timing helped us out alot.

    john
     
    domn8rx, Mar 14, 2010
    #4

  5. 68mustang

    Joined:
    Jan 31, 2010
    you say you put a bigger cam and pump in the rear, but did you in the front? did you try a pv that opens sooner?
     
    68mustang, Mar 14, 2010
    #5
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