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Thread: HP 750 Carburetor

  1. #1
    Join Date
    Apr 2010

    Default HP 750 Carburetor

    I purchased a hp main body kit part #134-300C. I'm using the base plate off my old 750 DP and I'm using the fuel bowls as well. The metering blocks are Quick Fuel billet blocks. For some reason, I have a bog now when I mash the pedal to the floor, then it picks back up. I have 31 squirters on the carb, and I tried 35s with no luck. Any help appreciated. If you need more info on my engine combo I will be glad to provide. I've tried everything I know to do with accelerator pump system. For instance, changing pump cams, nothing seems to work. I looked at the data from my datalogger when this happens. It goes dead lean at the hit of the throttle, then gets rich into the run all taken from a 1/4 mile run.

  2. #2
    Join Date
    Nov 2014
    Ont. Canada


    Try opening up your idle mixture screws a little to see if the extra fuel will help cover up the lean spot. If it does, you could then try a smaller idle air bleed to enrich up the transfer slots.

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